./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-10.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c3eabb-73dd-4b60-a6bf-3799a7bc0810/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c3eabb-73dd-4b60-a6bf-3799a7bc0810/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c3eabb-73dd-4b60-a6bf-3799a7bc0810/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c3eabb-73dd-4b60-a6bf-3799a7bc0810/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c3eabb-73dd-4b60-a6bf-3799a7bc0810/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c3eabb-73dd-4b60-a6bf-3799a7bc0810/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8880bc6b55ab6b26a36a9709c52577c78f4355aea8bee56c9643da00ec93f3ee --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:32:10,125 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:32:10,223 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c3eabb-73dd-4b60-a6bf-3799a7bc0810/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:32:10,230 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:32:10,233 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:32:10,265 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:32:10,266 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:32:10,266 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:32:10,266 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:32:10,267 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:32:10,267 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:32:10,267 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:32:10,268 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:32:10,268 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:32:10,269 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:32:10,270 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:32:10,270 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:32:10,270 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:32:10,270 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:32:10,270 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:32:10,270 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:32:10,270 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:32:10,271 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:32:10,271 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:32:10,271 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:32:10,271 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:32:10,271 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:32:10,272 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:32:10,272 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:32:10,272 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:32:10,272 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:32:10,272 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:32:10,272 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:32:10,272 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:32:10,273 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:32:10,273 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:32:10,274 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:32:10,274 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:32:10,274 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:32:10,274 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:32:10,274 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:32:10,274 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:32:10,274 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:32:10,274 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:32:10,275 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:32:10,275 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:32:10,275 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:32:10,275 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:32:10,275 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_75c3eabb-73dd-4b60-a6bf-3799a7bc0810/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8880bc6b55ab6b26a36a9709c52577c78f4355aea8bee56c9643da00ec93f3ee [2024-11-28 03:32:10,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:32:10,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:32:10,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:32:10,644 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:32:10,644 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:32:10,645 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c3eabb-73dd-4b60-a6bf-3799a7bc0810/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-10.i [2024-11-28 03:32:13,814 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c3eabb-73dd-4b60-a6bf-3799a7bc0810/bin/uautomizer-verify-aQ6SnzHsRB/data/76370e0f1/90795964aad4413686ab2387ed4aaf6f/FLAG932f45a13 [2024-11-28 03:32:14,191 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:32:14,191 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c3eabb-73dd-4b60-a6bf-3799a7bc0810/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-10.i [2024-11-28 03:32:14,207 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c3eabb-73dd-4b60-a6bf-3799a7bc0810/bin/uautomizer-verify-aQ6SnzHsRB/data/76370e0f1/90795964aad4413686ab2387ed4aaf6f/FLAG932f45a13 [2024-11-28 03:32:14,224 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c3eabb-73dd-4b60-a6bf-3799a7bc0810/bin/uautomizer-verify-aQ6SnzHsRB/data/76370e0f1/90795964aad4413686ab2387ed4aaf6f [2024-11-28 03:32:14,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:32:14,230 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:32:14,232 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:32:14,232 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:32:14,237 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:32:14,238 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:32:14" (1/1) ... [2024-11-28 03:32:14,239 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b22dda5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:14, skipping insertion in model container [2024-11-28 03:32:14,239 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:32:14" (1/1) ... [2024-11-28 03:32:14,274 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:32:14,459 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_75c3eabb-73dd-4b60-a6bf-3799a7bc0810/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-10.i[919,932] [2024-11-28 03:32:14,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:32:14,594 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:32:14,606 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_75c3eabb-73dd-4b60-a6bf-3799a7bc0810/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-10.i[919,932] [2024-11-28 03:32:14,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:32:14,668 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:32:14,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:14 WrapperNode [2024-11-28 03:32:14,669 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:32:14,670 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:32:14,671 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:32:14,671 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:32:14,678 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:14" (1/1) ... [2024-11-28 03:32:14,692 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:14" (1/1) ... [2024-11-28 03:32:14,752 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 317 [2024-11-28 03:32:14,752 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:32:14,753 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:32:14,753 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:32:14,753 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:32:14,765 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:14" (1/1) ... [2024-11-28 03:32:14,766 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:14" (1/1) ... [2024-11-28 03:32:14,771 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:14" (1/1) ... [2024-11-28 03:32:14,792 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 03:32:14,793 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:14" (1/1) ... [2024-11-28 03:32:14,793 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:14" (1/1) ... [2024-11-28 03:32:14,813 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:14" (1/1) ... [2024-11-28 03:32:14,815 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:14" (1/1) ... [2024-11-28 03:32:14,819 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:14" (1/1) ... [2024-11-28 03:32:14,823 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:14" (1/1) ... [2024-11-28 03:32:14,825 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:14" (1/1) ... [2024-11-28 03:32:14,830 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:32:14,831 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:32:14,832 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:32:14,832 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:32:14,833 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:14" (1/1) ... [2024-11-28 03:32:14,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:32:14,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c3eabb-73dd-4b60-a6bf-3799a7bc0810/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:14,871 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c3eabb-73dd-4b60-a6bf-3799a7bc0810/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:32:14,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c3eabb-73dd-4b60-a6bf-3799a7bc0810/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:32:14,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:32:14,904 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 03:32:14,904 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 03:32:14,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:32:14,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:32:14,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:32:15,033 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:32:15,036 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:32:15,957 INFO L? ?]: Removed 34 outVars from TransFormulas that were not future-live. [2024-11-28 03:32:15,959 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:32:15,980 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:32:15,983 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 03:32:15,983 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:32:15 BoogieIcfgContainer [2024-11-28 03:32:15,984 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:32:15,986 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:32:15,986 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:32:15,992 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:32:15,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:32:14" (1/3) ... [2024-11-28 03:32:15,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f670a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:32:15, skipping insertion in model container [2024-11-28 03:32:15,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:14" (2/3) ... [2024-11-28 03:32:15,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f670a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:32:15, skipping insertion in model container [2024-11-28 03:32:15,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:32:15" (3/3) ... [2024-11-28 03:32:15,998 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-co_file-10.i [2024-11-28 03:32:16,016 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:32:16,019 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-ps-co_file-10.i that has 2 procedures, 139 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 03:32:16,107 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:32:16,121 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;@77ec4526, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:32:16,122 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:32:16,128 INFO L276 IsEmpty]: Start isEmpty. Operand has 139 states, 94 states have (on average 1.425531914893617) internal successors, (134), 95 states have internal predecessors, (134), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-28 03:32:16,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-28 03:32:16,152 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:16,153 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:16,153 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:16,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:16,160 INFO L85 PathProgramCache]: Analyzing trace with hash -540524557, now seen corresponding path program 1 times [2024-11-28 03:32:16,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:16,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442919581] [2024-11-28 03:32:16,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:16,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:16,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:16,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2024-11-28 03:32:16,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:16,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442919581] [2024-11-28 03:32:16,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442919581] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:16,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321771536] [2024-11-28 03:32:16,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:16,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:16,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c3eabb-73dd-4b60-a6bf-3799a7bc0810/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:16,651 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c3eabb-73dd-4b60-a6bf-3799a7bc0810/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:16,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c3eabb-73dd-4b60-a6bf-3799a7bc0810/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:32:16,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:16,953 INFO L256 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 03:32:16,968 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:32:17,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2024-11-28 03:32:17,055 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:32:17,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321771536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:32:17,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:32:17,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 03:32:17,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125778388] [2024-11-28 03:32:17,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:32:17,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:32:17,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:17,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:32:17,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:32:17,101 INFO L87 Difference]: Start difference. First operand has 139 states, 94 states have (on average 1.425531914893617) internal successors, (134), 95 states have internal predecessors, (134), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-28 03:32:17,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:17,147 INFO L93 Difference]: Finished difference Result 271 states and 472 transitions. [2024-11-28 03:32:17,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:32:17,149 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 2 states have call successors, (42) Word has length 263 [2024-11-28 03:32:17,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:17,157 INFO L225 Difference]: With dead ends: 271 [2024-11-28 03:32:17,157 INFO L226 Difference]: Without dead ends: 135 [2024-11-28 03:32:17,161 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:32:17,164 INFO L435 NwaCegarLoop]: 211 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:17,165 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:32:17,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-28 03:32:17,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2024-11-28 03:32:17,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 91 states have (on average 1.3956043956043955) internal successors, (127), 91 states have internal predecessors, (127), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-28 03:32:17,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 211 transitions. [2024-11-28 03:32:17,218 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 211 transitions. Word has length 263 [2024-11-28 03:32:17,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:17,219 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 211 transitions. [2024-11-28 03:32:17,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-28 03:32:17,219 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 211 transitions. [2024-11-28 03:32:17,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-28 03:32:17,228 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:17,228 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:17,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c3eabb-73dd-4b60-a6bf-3799a7bc0810/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 03:32:17,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c3eabb-73dd-4b60-a6bf-3799a7bc0810/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 03:32:17,429 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:17,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:17,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1472034875, now seen corresponding path program 1 times [2024-11-28 03:32:17,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:17,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426639783] [2024-11-28 03:32:17,430 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:17,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:18,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:32:18,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:18,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426639783] [2024-11-28 03:32:18,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426639783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:32:18,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:32:18,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:32:18,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599025336] [2024-11-28 03:32:18,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:32:18,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:32:18,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:18,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:32:18,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:32:18,425 INFO L87 Difference]: Start difference. First operand 135 states and 211 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:32:18,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:18,550 INFO L93 Difference]: Finished difference Result 368 states and 582 transitions. [2024-11-28 03:32:18,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:32:18,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 263 [2024-11-28 03:32:18,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:18,561 INFO L225 Difference]: With dead ends: 368 [2024-11-28 03:32:18,562 INFO L226 Difference]: Without dead ends: 236 [2024-11-28 03:32:18,564 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:32:18,567 INFO L435 NwaCegarLoop]: 207 mSDtfsCounter, 91 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:18,568 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 401 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:32:18,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2024-11-28 03:32:18,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 216. [2024-11-28 03:32:18,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 129 states have (on average 1.3255813953488371) internal successors, (171), 129 states have internal predecessors, (171), 84 states have call successors, (84), 2 states have call predecessors, (84), 2 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-28 03:32:18,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 339 transitions. [2024-11-28 03:32:18,635 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 339 transitions. Word has length 263 [2024-11-28 03:32:18,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:18,636 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 339 transitions. [2024-11-28 03:32:18,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:32:18,637 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 339 transitions. [2024-11-28 03:32:18,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-28 03:32:18,645 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:18,646 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:18,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:32:18,647 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:18,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:18,648 INFO L85 PathProgramCache]: Analyzing trace with hash -467416965, now seen corresponding path program 1 times [2024-11-28 03:32:18,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:18,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31035203] [2024-11-28 03:32:18,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:18,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:18,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:19,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:32:19,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:19,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31035203] [2024-11-28 03:32:19,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31035203] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:32:19,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:32:19,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:32:19,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767154863] [2024-11-28 03:32:19,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:32:19,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:32:19,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:19,518 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:32:19,518 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:32:19,519 INFO L87 Difference]: Start difference. First operand 216 states and 339 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:32:19,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:19,953 INFO L93 Difference]: Finished difference Result 400 states and 625 transitions. [2024-11-28 03:32:19,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:32:19,954 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 263 [2024-11-28 03:32:19,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:19,961 INFO L225 Difference]: With dead ends: 400 [2024-11-28 03:32:19,961 INFO L226 Difference]: Without dead ends: 268 [2024-11-28 03:32:19,962 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:32:19,963 INFO L435 NwaCegarLoop]: 204 mSDtfsCounter, 164 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:19,963 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 601 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:32:19,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-28 03:32:20,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 234. [2024-11-28 03:32:20,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 147 states have (on average 1.3537414965986394) internal successors, (199), 147 states have internal predecessors, (199), 84 states have call successors, (84), 2 states have call predecessors, (84), 2 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-28 03:32:20,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 367 transitions. [2024-11-28 03:32:20,046 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 367 transitions. Word has length 263 [2024-11-28 03:32:20,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:20,048 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 367 transitions. [2024-11-28 03:32:20,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:32:20,048 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 367 transitions. [2024-11-28 03:32:20,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-28 03:32:20,056 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:20,056 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:20,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:32:20,057 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:20,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:20,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1524347362, now seen corresponding path program 1 times [2024-11-28 03:32:20,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:20,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850849502] [2024-11-28 03:32:20,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:20,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:45,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:32:45,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:45,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850849502] [2024-11-28 03:32:45,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850849502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:32:45,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:32:45,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-28 03:32:45,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981108718] [2024-11-28 03:32:45,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:32:45,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:32:45,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:45,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:32:45,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:32:45,359 INFO L87 Difference]: Start difference. First operand 234 states and 367 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-28 03:32:48,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:48,154 INFO L93 Difference]: Finished difference Result 606 states and 923 transitions. [2024-11-28 03:32:48,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:32:48,155 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 264 [2024-11-28 03:32:48,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:48,160 INFO L225 Difference]: With dead ends: 606 [2024-11-28 03:32:48,161 INFO L226 Difference]: Without dead ends: 474 [2024-11-28 03:32:48,162 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2024-11-28 03:32:48,163 INFO L435 NwaCegarLoop]: 202 mSDtfsCounter, 551 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:48,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 1121 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-28 03:32:48,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2024-11-28 03:32:48,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 363. [2024-11-28 03:32:48,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 230 states have (on average 1.317391304347826) internal successors, (303), 231 states have internal predecessors, (303), 126 states have call successors, (126), 6 states have call predecessors, (126), 6 states have return successors, (126), 125 states have call predecessors, (126), 126 states have call successors, (126) [2024-11-28 03:32:48,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 555 transitions. [2024-11-28 03:32:48,244 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 555 transitions. Word has length 264 [2024-11-28 03:32:48,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:48,244 INFO L471 AbstractCegarLoop]: Abstraction has 363 states and 555 transitions. [2024-11-28 03:32:48,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-28 03:32:48,245 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 555 transitions. [2024-11-28 03:32:48,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-28 03:32:48,249 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:48,249 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:48,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:32:48,249 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:48,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:48,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1183337378, now seen corresponding path program 1 times [2024-11-28 03:32:48,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:48,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14879940] [2024-11-28 03:32:48,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:48,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:48,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:33:10,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:33:10,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:10,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14879940] [2024-11-28 03:33:10,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14879940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:33:10,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:33:10,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-28 03:33:10,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740324302] [2024-11-28 03:33:10,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:33:10,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:33:10,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:10,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:33:10,733 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:33:10,733 INFO L87 Difference]: Start difference. First operand 363 states and 555 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:33:13,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:13,366 INFO L93 Difference]: Finished difference Result 775 states and 1158 transitions. [2024-11-28 03:33:13,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:33:13,368 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 264 [2024-11-28 03:33:13,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:13,375 INFO L225 Difference]: With dead ends: 775 [2024-11-28 03:33:13,375 INFO L226 Difference]: Without dead ends: 489 [2024-11-28 03:33:13,378 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=183, Invalid=323, Unknown=0, NotChecked=0, Total=506 [2024-11-28 03:33:13,379 INFO L435 NwaCegarLoop]: 211 mSDtfsCounter, 518 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:13,380 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 1123 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 03:33:13,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2024-11-28 03:33:13,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 376. [2024-11-28 03:33:13,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 243 states have (on average 1.3209876543209877) internal successors, (321), 244 states have internal predecessors, (321), 126 states have call successors, (126), 6 states have call predecessors, (126), 6 states have return successors, (126), 125 states have call predecessors, (126), 126 states have call successors, (126) [2024-11-28 03:33:13,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 573 transitions. [2024-11-28 03:33:13,443 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 573 transitions. Word has length 264 [2024-11-28 03:33:13,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:13,444 INFO L471 AbstractCegarLoop]: Abstraction has 376 states and 573 transitions. [2024-11-28 03:33:13,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:33:13,445 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 573 transitions. [2024-11-28 03:33:13,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-28 03:33:13,449 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:13,449 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:13,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:33:13,449 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:33:13,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:13,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1963504478, now seen corresponding path program 1 times [2024-11-28 03:33:13,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:13,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764205765] [2024-11-28 03:33:13,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:33:13,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:33:28,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:33:28,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:28,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764205765] [2024-11-28 03:33:28,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764205765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:33:28,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:33:28,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-28 03:33:28,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8343680] [2024-11-28 03:33:28,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:33:28,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:33:28,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:28,649 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:33:28,649 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:33:28,649 INFO L87 Difference]: Start difference. First operand 376 states and 573 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-28 03:33:30,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:30,283 INFO L93 Difference]: Finished difference Result 760 states and 1140 transitions. [2024-11-28 03:33:30,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:33:30,284 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 264 [2024-11-28 03:33:30,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:30,289 INFO L225 Difference]: With dead ends: 760 [2024-11-28 03:33:30,289 INFO L226 Difference]: Without dead ends: 461 [2024-11-28 03:33:30,291 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2024-11-28 03:33:30,292 INFO L435 NwaCegarLoop]: 216 mSDtfsCounter, 470 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:30,292 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 1163 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:33:30,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2024-11-28 03:33:30,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 365. [2024-11-28 03:33:30,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 232 states have (on average 1.3146551724137931) internal successors, (305), 233 states have internal predecessors, (305), 126 states have call successors, (126), 6 states have call predecessors, (126), 6 states have return successors, (126), 125 states have call predecessors, (126), 126 states have call successors, (126) [2024-11-28 03:33:30,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 557 transitions. [2024-11-28 03:33:30,338 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 557 transitions. Word has length 264 [2024-11-28 03:33:30,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:30,339 INFO L471 AbstractCegarLoop]: Abstraction has 365 states and 557 transitions. [2024-11-28 03:33:30,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-28 03:33:30,339 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 557 transitions. [2024-11-28 03:33:30,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-28 03:33:30,341 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:30,342 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:30,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:33:30,342 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:33:30,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:30,343 INFO L85 PathProgramCache]: Analyzing trace with hash -469797344, now seen corresponding path program 1 times [2024-11-28 03:33:30,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:30,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260570359] [2024-11-28 03:33:30,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:33:30,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:34:27,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:34:27,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:34:27,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260570359] [2024-11-28 03:34:27,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260570359] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:34:27,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:34:27,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-28 03:34:27,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557348290] [2024-11-28 03:34:27,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:34:27,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:34:27,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:34:27,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:34:27,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:34:27,699 INFO L87 Difference]: Start difference. First operand 365 states and 557 transitions. Second operand has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2024-11-28 03:34:31,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:34:31,089 INFO L93 Difference]: Finished difference Result 796 states and 1206 transitions. [2024-11-28 03:34:31,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:34:31,089 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 264 [2024-11-28 03:34:31,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:34:31,094 INFO L225 Difference]: With dead ends: 796 [2024-11-28 03:34:31,095 INFO L226 Difference]: Without dead ends: 664 [2024-11-28 03:34:31,096 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2024-11-28 03:34:31,097 INFO L435 NwaCegarLoop]: 236 mSDtfsCounter, 663 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 1375 SdHoareTripleChecker+Invalid, 1286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:34:31,097 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 1375 Invalid, 1286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 1069 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-28 03:34:31,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2024-11-28 03:34:31,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 533. [2024-11-28 03:34:31,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 355 states have (on average 1.3380281690140845) internal successors, (475), 355 states have internal predecessors, (475), 168 states have call successors, (168), 9 states have call predecessors, (168), 9 states have return successors, (168), 168 states have call predecessors, (168), 168 states have call successors, (168) [2024-11-28 03:34:31,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 811 transitions. [2024-11-28 03:34:31,167 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 811 transitions. Word has length 264 [2024-11-28 03:34:31,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:34:31,168 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 811 transitions. [2024-11-28 03:34:31,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2024-11-28 03:34:31,168 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 811 transitions. [2024-11-28 03:34:31,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-28 03:34:31,172 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:34:31,172 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:34:31,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:34:31,172 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:34:31,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:34:31,173 INFO L85 PathProgramCache]: Analyzing trace with hash -810807328, now seen corresponding path program 1 times [2024-11-28 03:34:31,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:34:31,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447946494] [2024-11-28 03:34:31,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:34:31,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:34:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:34:50,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:34:50,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:34:50,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447946494] [2024-11-28 03:34:50,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447946494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:34:50,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:34:50,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 03:34:50,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397428308] [2024-11-28 03:34:50,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:34:50,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:34:50,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:34:50,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:34:50,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:34:50,196 INFO L87 Difference]: Start difference. First operand 533 states and 811 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:34:52,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:34:52,234 INFO L93 Difference]: Finished difference Result 1032 states and 1563 transitions. [2024-11-28 03:34:52,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:34:52,235 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 264 [2024-11-28 03:34:52,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:34:52,243 INFO L225 Difference]: With dead ends: 1032 [2024-11-28 03:34:52,243 INFO L226 Difference]: Without dead ends: 750 [2024-11-28 03:34:52,245 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=89, Invalid=151, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:34:52,245 INFO L435 NwaCegarLoop]: 212 mSDtfsCounter, 358 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:34:52,246 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 1182 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 03:34:52,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2024-11-28 03:34:52,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 686. [2024-11-28 03:34:52,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 463 states have (on average 1.3369330453563715) internal successors, (619), 463 states have internal predecessors, (619), 210 states have call successors, (210), 12 states have call predecessors, (210), 12 states have return successors, (210), 210 states have call predecessors, (210), 210 states have call successors, (210) [2024-11-28 03:34:52,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1039 transitions. [2024-11-28 03:34:52,333 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1039 transitions. Word has length 264 [2024-11-28 03:34:52,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:34:52,336 INFO L471 AbstractCegarLoop]: Abstraction has 686 states and 1039 transitions. [2024-11-28 03:34:52,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:34:52,336 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1039 transitions. [2024-11-28 03:34:52,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-11-28 03:34:52,340 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:34:52,341 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:34:52,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:34:52,342 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:34:52,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:34:52,346 INFO L85 PathProgramCache]: Analyzing trace with hash 555059664, now seen corresponding path program 1 times [2024-11-28 03:34:52,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:34:52,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066531664] [2024-11-28 03:34:52,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:34:52,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:34:52,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:47,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:35:47,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:47,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066531664] [2024-11-28 03:35:47,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066531664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:35:47,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:35:47,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-28 03:35:47,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031887418] [2024-11-28 03:35:47,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:35:47,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:35:47,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:47,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:35:47,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:35:47,338 INFO L87 Difference]: Start difference. First operand 686 states and 1039 transitions. Second operand has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-28 03:35:51,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:51,457 INFO L93 Difference]: Finished difference Result 1023 states and 1522 transitions. [2024-11-28 03:35:51,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:35:51,459 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 265 [2024-11-28 03:35:51,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:51,468 INFO L225 Difference]: With dead ends: 1023 [2024-11-28 03:35:51,468 INFO L226 Difference]: Without dead ends: 891 [2024-11-28 03:35:51,470 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2024-11-28 03:35:51,473 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 542 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:51,474 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 1113 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-28 03:35:51,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2024-11-28 03:35:51,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 703. [2024-11-28 03:35:51,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 480 states have (on average 1.34375) internal successors, (645), 480 states have internal predecessors, (645), 210 states have call successors, (210), 12 states have call predecessors, (210), 12 states have return successors, (210), 210 states have call predecessors, (210), 210 states have call successors, (210) [2024-11-28 03:35:51,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1065 transitions. [2024-11-28 03:35:51,572 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1065 transitions. Word has length 265 [2024-11-28 03:35:51,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:51,573 INFO L471 AbstractCegarLoop]: Abstraction has 703 states and 1065 transitions. [2024-11-28 03:35:51,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-28 03:35:51,573 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1065 transitions. [2024-11-28 03:35:51,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-11-28 03:35:51,576 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:51,577 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:51,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 03:35:51,577 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:51,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:51,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1964900270, now seen corresponding path program 1 times [2024-11-28 03:35:51,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:51,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120079167] [2024-11-28 03:35:51,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:51,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:52,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:35:52,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:52,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120079167] [2024-11-28 03:35:52,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120079167] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:35:52,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:35:52,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:35:52,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883555741] [2024-11-28 03:35:52,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:35:52,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:35:52,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:52,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:35:52,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:35:52,132 INFO L87 Difference]: Start difference. First operand 703 states and 1065 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:35:52,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:52,408 INFO L93 Difference]: Finished difference Result 1269 states and 1910 transitions. [2024-11-28 03:35:52,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:35:52,408 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 265 [2024-11-28 03:35:52,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:52,419 INFO L225 Difference]: With dead ends: 1269 [2024-11-28 03:35:52,420 INFO L226 Difference]: Without dead ends: 834 [2024-11-28 03:35:52,422 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:35:52,423 INFO L435 NwaCegarLoop]: 189 mSDtfsCounter, 114 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:52,423 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 380 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:35:52,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2024-11-28 03:35:52,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 789. [2024-11-28 03:35:52,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 562 states have (on average 1.3505338078291815) internal successors, (759), 563 states have internal predecessors, (759), 212 states have call successors, (212), 14 states have call predecessors, (212), 14 states have return successors, (212), 211 states have call predecessors, (212), 212 states have call successors, (212) [2024-11-28 03:35:52,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1183 transitions. [2024-11-28 03:35:52,525 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1183 transitions. Word has length 265 [2024-11-28 03:35:52,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:52,526 INFO L471 AbstractCegarLoop]: Abstraction has 789 states and 1183 transitions. [2024-11-28 03:35:52,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:35:52,527 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1183 transitions. [2024-11-28 03:35:52,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-11-28 03:35:52,529 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:52,529 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:52,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 03:35:52,530 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:52,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:52,531 INFO L85 PathProgramCache]: Analyzing trace with hash -31746350, now seen corresponding path program 1 times [2024-11-28 03:35:52,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:52,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504020922] [2024-11-28 03:35:52,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:52,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:52,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:35:52,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:52,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504020922] [2024-11-28 03:35:52,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504020922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:35:52,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:35:52,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:35:52,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972079243] [2024-11-28 03:35:52,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:35:52,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:35:52,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:52,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:35:52,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:35:52,778 INFO L87 Difference]: Start difference. First operand 789 states and 1183 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:35:52,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:52,944 INFO L93 Difference]: Finished difference Result 1639 states and 2421 transitions. [2024-11-28 03:35:52,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:35:52,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 265 [2024-11-28 03:35:52,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:52,953 INFO L225 Difference]: With dead ends: 1639 [2024-11-28 03:35:52,953 INFO L226 Difference]: Without dead ends: 982 [2024-11-28 03:35:52,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:35:52,957 INFO L435 NwaCegarLoop]: 250 mSDtfsCounter, 39 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:52,957 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 674 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:35:52,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2024-11-28 03:35:53,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 970. [2024-11-28 03:35:53,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 717 states have (on average 1.3291492329149233) internal successors, (953), 723 states have internal predecessors, (953), 230 states have call successors, (230), 22 states have call predecessors, (230), 22 states have return successors, (230), 224 states have call predecessors, (230), 230 states have call successors, (230) [2024-11-28 03:35:53,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1413 transitions. [2024-11-28 03:35:53,065 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1413 transitions. Word has length 265 [2024-11-28 03:35:53,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:53,067 INFO L471 AbstractCegarLoop]: Abstraction has 970 states and 1413 transitions. [2024-11-28 03:35:53,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:35:53,068 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1413 transitions. [2024-11-28 03:35:53,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-11-28 03:35:53,073 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:53,074 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:53,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 03:35:53,074 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:53,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:53,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1426315248, now seen corresponding path program 1 times [2024-11-28 03:35:53,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:53,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892182006] [2024-11-28 03:35:53,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:53,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:36:20,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:36:20,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:36:20,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892182006] [2024-11-28 03:36:20,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892182006] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:36:20,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:36:20,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-28 03:36:20,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755587528] [2024-11-28 03:36:20,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:36:20,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 03:36:20,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:36:20,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 03:36:20,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:36:20,366 INFO L87 Difference]: Start difference. First operand 970 states and 1413 transitions. Second operand has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-28 03:36:25,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:36:25,066 INFO L93 Difference]: Finished difference Result 1934 states and 2770 transitions. [2024-11-28 03:36:25,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 03:36:25,067 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 265 [2024-11-28 03:36:25,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:36:25,076 INFO L225 Difference]: With dead ends: 1934 [2024-11-28 03:36:25,076 INFO L226 Difference]: Without dead ends: 1294 [2024-11-28 03:36:25,079 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2024-11-28 03:36:25,079 INFO L435 NwaCegarLoop]: 212 mSDtfsCounter, 632 mSDsluCounter, 1614 mSDsCounter, 0 mSdLazyCounter, 1551 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 1826 SdHoareTripleChecker+Invalid, 1722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:36:25,080 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 1826 Invalid, 1722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1551 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-28 03:36:25,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2024-11-28 03:36:25,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 982. [2024-11-28 03:36:25,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 729 states have (on average 1.3305898491083676) internal successors, (970), 735 states have internal predecessors, (970), 230 states have call successors, (230), 22 states have call predecessors, (230), 22 states have return successors, (230), 224 states have call predecessors, (230), 230 states have call successors, (230) [2024-11-28 03:36:25,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1430 transitions. [2024-11-28 03:36:25,196 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1430 transitions. Word has length 265 [2024-11-28 03:36:25,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:36:25,196 INFO L471 AbstractCegarLoop]: Abstraction has 982 states and 1430 transitions. [2024-11-28 03:36:25,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-28 03:36:25,197 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1430 transitions. [2024-11-28 03:36:25,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-11-28 03:36:25,199 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:36:25,200 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:36:25,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 03:36:25,200 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:36:25,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:36:25,201 INFO L85 PathProgramCache]: Analyzing trace with hash -194164976, now seen corresponding path program 1 times [2024-11-28 03:36:25,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:36:25,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199868007] [2024-11-28 03:36:25,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:36:25,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:36:25,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:36:42,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:36:42,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:36:42,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199868007] [2024-11-28 03:36:42,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199868007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:36:42,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:36:42,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-28 03:36:42,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809528600] [2024-11-28 03:36:42,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:36:42,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:36:42,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:36:42,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:36:42,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:36:42,778 INFO L87 Difference]: Start difference. First operand 982 states and 1430 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:36:44,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:36:44,279 INFO L93 Difference]: Finished difference Result 1907 states and 2745 transitions. [2024-11-28 03:36:44,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:36:44,280 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 265 [2024-11-28 03:36:44,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:36:44,290 INFO L225 Difference]: With dead ends: 1907 [2024-11-28 03:36:44,290 INFO L226 Difference]: Without dead ends: 1255 [2024-11-28 03:36:44,293 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:36:44,294 INFO L435 NwaCegarLoop]: 231 mSDtfsCounter, 340 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:36:44,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 1301 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 03:36:44,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2024-11-28 03:36:44,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 968. [2024-11-28 03:36:44,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 715 states have (on average 1.3286713286713288) internal successors, (950), 721 states have internal predecessors, (950), 230 states have call successors, (230), 22 states have call predecessors, (230), 22 states have return successors, (230), 224 states have call predecessors, (230), 230 states have call successors, (230) [2024-11-28 03:36:44,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1410 transitions. [2024-11-28 03:36:44,438 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1410 transitions. Word has length 265 [2024-11-28 03:36:44,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:36:44,439 INFO L471 AbstractCegarLoop]: Abstraction has 968 states and 1410 transitions. [2024-11-28 03:36:44,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:36:44,440 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1410 transitions. [2024-11-28 03:36:44,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-11-28 03:36:44,442 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:36:44,442 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:36:44,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 03:36:44,443 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:36:44,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:36:44,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1133884078, now seen corresponding path program 1 times [2024-11-28 03:36:44,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:36:44,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205051115] [2024-11-28 03:36:44,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:36:44,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:36:44,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:37:42,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:37:42,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:37:42,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205051115] [2024-11-28 03:37:42,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205051115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:37:42,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:37:42,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-28 03:37:42,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061826648] [2024-11-28 03:37:42,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:37:42,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:37:42,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:37:42,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:37:42,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:37:42,020 INFO L87 Difference]: Start difference. First operand 968 states and 1410 transitions. Second operand has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-28 03:37:44,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:37:44,779 INFO L93 Difference]: Finished difference Result 1516 states and 2203 transitions. [2024-11-28 03:37:44,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:37:44,780 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 265 [2024-11-28 03:37:44,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:37:44,788 INFO L225 Difference]: With dead ends: 1516 [2024-11-28 03:37:44,789 INFO L226 Difference]: Without dead ends: 1074 [2024-11-28 03:37:44,791 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2024-11-28 03:37:44,792 INFO L435 NwaCegarLoop]: 201 mSDtfsCounter, 541 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:37:44,792 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 1116 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-28 03:37:44,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2024-11-28 03:37:44,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 959. [2024-11-28 03:37:44,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 706 states have (on average 1.3229461756373937) internal successors, (934), 712 states have internal predecessors, (934), 230 states have call successors, (230), 22 states have call predecessors, (230), 22 states have return successors, (230), 224 states have call predecessors, (230), 230 states have call successors, (230) [2024-11-28 03:37:44,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1394 transitions. [2024-11-28 03:37:44,923 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1394 transitions. Word has length 265 [2024-11-28 03:37:44,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:37:44,924 INFO L471 AbstractCegarLoop]: Abstraction has 959 states and 1394 transitions. [2024-11-28 03:37:44,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-28 03:37:44,925 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1394 transitions. [2024-11-28 03:37:44,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-11-28 03:37:44,927 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:37:44,928 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:37:44,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 03:37:44,928 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:37:44,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:37:44,929 INFO L85 PathProgramCache]: Analyzing trace with hash 641123284, now seen corresponding path program 1 times [2024-11-28 03:37:44,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:37:44,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558454793] [2024-11-28 03:37:44,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:37:44,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:37:45,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:37:48,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:37:48,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:37:48,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558454793] [2024-11-28 03:37:48,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558454793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:37:48,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:37:48,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-28 03:37:48,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556475069] [2024-11-28 03:37:48,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:37:48,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:37:48,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:37:48,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:37:48,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:37:48,188 INFO L87 Difference]: Start difference. First operand 959 states and 1394 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 15 states have internal predecessors, (58), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2024-11-28 03:37:54,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:37:54,754 INFO L93 Difference]: Finished difference Result 1576 states and 2285 transitions. [2024-11-28 03:37:54,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 03:37:54,755 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 15 states have internal predecessors, (58), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 265 [2024-11-28 03:37:54,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:37:54,763 INFO L225 Difference]: With dead ends: 1576 [2024-11-28 03:37:54,763 INFO L226 Difference]: Without dead ends: 1349 [2024-11-28 03:37:54,765 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=221, Invalid=481, Unknown=0, NotChecked=0, Total=702 [2024-11-28 03:37:54,766 INFO L435 NwaCegarLoop]: 217 mSDtfsCounter, 873 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 1539 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 1694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:37:54,766 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 1451 Invalid, 1694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1539 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-28 03:37:54,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2024-11-28 03:37:54,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1153. [2024-11-28 03:37:54,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 849 states have (on average 1.3333333333333333) internal successors, (1132), 856 states have internal predecessors, (1132), 276 states have call successors, (276), 27 states have call predecessors, (276), 27 states have return successors, (276), 269 states have call predecessors, (276), 276 states have call successors, (276) [2024-11-28 03:37:54,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1684 transitions. [2024-11-28 03:37:54,914 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1684 transitions. Word has length 265 [2024-11-28 03:37:54,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:37:54,915 INFO L471 AbstractCegarLoop]: Abstraction has 1153 states and 1684 transitions. [2024-11-28 03:37:54,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 15 states have internal predecessors, (58), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2024-11-28 03:37:54,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1684 transitions. [2024-11-28 03:37:54,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-11-28 03:37:54,918 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:37:54,918 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:37:54,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 03:37:54,919 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:37:54,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:37:54,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1480246546, now seen corresponding path program 1 times [2024-11-28 03:37:54,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:37:54,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373028448] [2024-11-28 03:37:54,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:37:54,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:37:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:17,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:38:17,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:17,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373028448] [2024-11-28 03:38:17,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373028448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:17,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:38:17,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 03:38:17,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332067871] [2024-11-28 03:38:17,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:17,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:38:17,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:17,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:38:17,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:38:17,838 INFO L87 Difference]: Start difference. First operand 1153 states and 1684 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:38:19,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:19,339 INFO L93 Difference]: Finished difference Result 2015 states and 2888 transitions. [2024-11-28 03:38:19,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:38:19,340 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 265 [2024-11-28 03:38:19,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:19,349 INFO L225 Difference]: With dead ends: 2015 [2024-11-28 03:38:19,350 INFO L226 Difference]: Without dead ends: 1614 [2024-11-28 03:38:19,352 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:38:19,353 INFO L435 NwaCegarLoop]: 208 mSDtfsCounter, 425 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:19,353 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 1093 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 03:38:19,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2024-11-28 03:38:19,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1178. [2024-11-28 03:38:19,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 873 states have (on average 1.3379152348224512) internal successors, (1168), 880 states have internal predecessors, (1168), 276 states have call successors, (276), 28 states have call predecessors, (276), 28 states have return successors, (276), 269 states have call predecessors, (276), 276 states have call successors, (276) [2024-11-28 03:38:19,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1720 transitions. [2024-11-28 03:38:19,508 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1720 transitions. Word has length 265 [2024-11-28 03:38:19,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:19,509 INFO L471 AbstractCegarLoop]: Abstraction has 1178 states and 1720 transitions. [2024-11-28 03:38:19,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:38:19,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1720 transitions. [2024-11-28 03:38:19,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-11-28 03:38:19,512 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:19,512 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:38:19,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 03:38:19,513 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:19,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:19,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1179708306, now seen corresponding path program 1 times [2024-11-28 03:38:19,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:19,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994426272] [2024-11-28 03:38:19,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:19,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:37,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:38:37,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:37,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994426272] [2024-11-28 03:38:37,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994426272] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:37,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:38:37,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-28 03:38:37,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764766669] [2024-11-28 03:38:37,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:37,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:38:37,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:37,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:38:37,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:38:37,996 INFO L87 Difference]: Start difference. First operand 1178 states and 1720 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:38:39,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:39,440 INFO L93 Difference]: Finished difference Result 2242 states and 3248 transitions. [2024-11-28 03:38:39,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:38:39,441 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 265 [2024-11-28 03:38:39,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:39,448 INFO L225 Difference]: With dead ends: 2242 [2024-11-28 03:38:39,448 INFO L226 Difference]: Without dead ends: 1402 [2024-11-28 03:38:39,451 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:38:39,452 INFO L435 NwaCegarLoop]: 253 mSDtfsCounter, 308 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:39,452 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 1414 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 03:38:39,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2024-11-28 03:38:39,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 1176. [2024-11-28 03:38:39,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 871 states have (on average 1.3375430539609645) internal successors, (1165), 878 states have internal predecessors, (1165), 276 states have call successors, (276), 28 states have call predecessors, (276), 28 states have return successors, (276), 269 states have call predecessors, (276), 276 states have call successors, (276) [2024-11-28 03:38:39,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1717 transitions. [2024-11-28 03:38:39,602 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1717 transitions. Word has length 265 [2024-11-28 03:38:39,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:39,603 INFO L471 AbstractCegarLoop]: Abstraction has 1176 states and 1717 transitions. [2024-11-28 03:38:39,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:38:39,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1717 transitions. [2024-11-28 03:38:39,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2024-11-28 03:38:39,605 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:39,605 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:38:39,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 03:38:39,606 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:39,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:39,606 INFO L85 PathProgramCache]: Analyzing trace with hash -509025537, now seen corresponding path program 1 times [2024-11-28 03:38:39,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:39,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778008725] [2024-11-28 03:38:39,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:39,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:00,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:39:00,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:00,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778008725] [2024-11-28 03:39:00,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778008725] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:00,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:39:00,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-28 03:39:00,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970861392] [2024-11-28 03:39:00,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:00,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:39:00,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:00,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:39:00,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:39:00,366 INFO L87 Difference]: Start difference. First operand 1176 states and 1717 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-28 03:39:03,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:03,322 INFO L93 Difference]: Finished difference Result 1964 states and 2823 transitions. [2024-11-28 03:39:03,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 03:39:03,324 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 266 [2024-11-28 03:39:03,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:03,333 INFO L225 Difference]: With dead ends: 1964 [2024-11-28 03:39:03,334 INFO L226 Difference]: Without dead ends: 1563 [2024-11-28 03:39:03,336 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2024-11-28 03:39:03,337 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 727 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:03,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 1079 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 03:39:03,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2024-11-28 03:39:03,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1183. [2024-11-28 03:39:03,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 878 states have (on average 1.3394077448747153) internal successors, (1176), 885 states have internal predecessors, (1176), 276 states have call successors, (276), 28 states have call predecessors, (276), 28 states have return successors, (276), 269 states have call predecessors, (276), 276 states have call successors, (276) [2024-11-28 03:39:03,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1728 transitions. [2024-11-28 03:39:03,486 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1728 transitions. Word has length 266 [2024-11-28 03:39:03,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:03,486 INFO L471 AbstractCegarLoop]: Abstraction has 1183 states and 1728 transitions. [2024-11-28 03:39:03,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-28 03:39:03,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1728 transitions. [2024-11-28 03:39:03,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-11-28 03:39:03,489 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:03,489 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:03,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 03:39:03,489 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:03,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:03,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1490990813, now seen corresponding path program 1 times [2024-11-28 03:39:03,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:03,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256838499] [2024-11-28 03:39:03,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:03,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:03,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:05,504 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:39:05,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:05,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256838499] [2024-11-28 03:39:05,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256838499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:05,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:39:05,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-28 03:39:05,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89548853] [2024-11-28 03:39:05,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:05,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:39:05,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:05,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:39:05,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:39:05,506 INFO L87 Difference]: Start difference. First operand 1183 states and 1728 transitions. Second operand has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:39:07,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:07,097 INFO L93 Difference]: Finished difference Result 2246 states and 3288 transitions. [2024-11-28 03:39:07,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:39:07,098 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 267 [2024-11-28 03:39:07,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:07,113 INFO L225 Difference]: With dead ends: 2246 [2024-11-28 03:39:07,113 INFO L226 Difference]: Without dead ends: 1840 [2024-11-28 03:39:07,115 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2024-11-28 03:39:07,116 INFO L435 NwaCegarLoop]: 317 mSDtfsCounter, 323 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 1681 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:07,117 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 1681 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:39:07,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1840 states. [2024-11-28 03:39:07,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1840 to 1772. [2024-11-28 03:39:07,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1772 states, 1336 states have (on average 1.3375748502994012) internal successors, (1787), 1351 states have internal predecessors, (1787), 396 states have call successors, (396), 39 states have call predecessors, (396), 39 states have return successors, (396), 381 states have call predecessors, (396), 396 states have call successors, (396) [2024-11-28 03:39:07,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1772 states to 1772 states and 2579 transitions. [2024-11-28 03:39:07,327 INFO L78 Accepts]: Start accepts. Automaton has 1772 states and 2579 transitions. Word has length 267 [2024-11-28 03:39:07,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:07,328 INFO L471 AbstractCegarLoop]: Abstraction has 1772 states and 2579 transitions. [2024-11-28 03:39:07,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:39:07,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1772 states and 2579 transitions. [2024-11-28 03:39:07,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-11-28 03:39:07,335 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:07,335 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:07,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 03:39:07,339 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:07,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:07,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1489414179, now seen corresponding path program 1 times [2024-11-28 03:39:07,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:07,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889266913] [2024-11-28 03:39:07,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:07,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:09,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:39:09,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:09,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889266913] [2024-11-28 03:39:09,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889266913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:09,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:39:09,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-28 03:39:09,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560747369] [2024-11-28 03:39:09,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:09,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:39:09,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:09,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:39:09,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:39:09,516 INFO L87 Difference]: Start difference. First operand 1772 states and 2579 transitions. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:39:10,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:10,643 INFO L93 Difference]: Finished difference Result 2509 states and 3547 transitions. [2024-11-28 03:39:10,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:39:10,644 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 267 [2024-11-28 03:39:10,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:10,656 INFO L225 Difference]: With dead ends: 2509 [2024-11-28 03:39:10,657 INFO L226 Difference]: Without dead ends: 2507 [2024-11-28 03:39:10,658 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:39:10,659 INFO L435 NwaCegarLoop]: 245 mSDtfsCounter, 126 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 1766 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:10,659 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 1766 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:39:10,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2024-11-28 03:39:10,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2067. [2024-11-28 03:39:10,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2067 states, 1570 states have (on average 1.3363057324840764) internal successors, (2098), 1591 states have internal predecessors, (2098), 448 states have call successors, (448), 48 states have call predecessors, (448), 48 states have return successors, (448), 427 states have call predecessors, (448), 448 states have call successors, (448) [2024-11-28 03:39:10,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2067 states to 2067 states and 2994 transitions. [2024-11-28 03:39:10,917 INFO L78 Accepts]: Start accepts. Automaton has 2067 states and 2994 transitions. Word has length 267 [2024-11-28 03:39:10,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:10,918 INFO L471 AbstractCegarLoop]: Abstraction has 2067 states and 2994 transitions. [2024-11-28 03:39:10,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:39:10,919 INFO L276 IsEmpty]: Start isEmpty. Operand 2067 states and 2994 transitions. [2024-11-28 03:39:10,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-11-28 03:39:10,921 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:10,922 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:10,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 03:39:10,922 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:10,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:10,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1747579617, now seen corresponding path program 1 times [2024-11-28 03:39:10,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:10,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24386999] [2024-11-28 03:39:10,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:10,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:11,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:17,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:39:17,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:17,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24386999] [2024-11-28 03:39:17,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24386999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:17,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:39:17,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-11-28 03:39:17,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046620286] [2024-11-28 03:39:17,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:17,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 03:39:17,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:17,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 03:39:17,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2024-11-28 03:39:17,265 INFO L87 Difference]: Start difference. First operand 2067 states and 2994 transitions. Second operand has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 21 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:39:22,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:22,553 INFO L93 Difference]: Finished difference Result 3139 states and 4479 transitions. [2024-11-28 03:39:22,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 03:39:22,554 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 21 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 267 [2024-11-28 03:39:22,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:22,568 INFO L225 Difference]: With dead ends: 3139 [2024-11-28 03:39:22,568 INFO L226 Difference]: Without dead ends: 2452 [2024-11-28 03:39:22,571 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=270, Invalid=1136, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 03:39:22,572 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 544 mSDsluCounter, 1798 mSDsCounter, 0 mSdLazyCounter, 1609 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1992 SdHoareTripleChecker+Invalid, 1750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:22,573 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 1992 Invalid, 1750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1609 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-28 03:39:22,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2452 states. [2024-11-28 03:39:22,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2452 to 2157. [2024-11-28 03:39:22,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2157 states, 1660 states have (on average 1.3385542168674698) internal successors, (2222), 1681 states have internal predecessors, (2222), 448 states have call successors, (448), 48 states have call predecessors, (448), 48 states have return successors, (448), 427 states have call predecessors, (448), 448 states have call successors, (448) [2024-11-28 03:39:22,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 3118 transitions. [2024-11-28 03:39:22,819 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 3118 transitions. Word has length 267 [2024-11-28 03:39:22,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:22,819 INFO L471 AbstractCegarLoop]: Abstraction has 2157 states and 3118 transitions. [2024-11-28 03:39:22,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 21 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:39:22,820 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 3118 transitions. [2024-11-28 03:39:22,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-11-28 03:39:22,822 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:22,823 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:22,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 03:39:22,823 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:22,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:22,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1524112805, now seen corresponding path program 1 times [2024-11-28 03:39:22,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:22,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513436661] [2024-11-28 03:39:22,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:22,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:24,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:39:24,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:24,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513436661] [2024-11-28 03:39:24,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513436661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:24,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:39:24,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-28 03:39:24,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079974603] [2024-11-28 03:39:24,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:24,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:39:24,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:24,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:39:24,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:39:24,781 INFO L87 Difference]: Start difference. First operand 2157 states and 3118 transitions. Second operand has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:39:26,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:26,398 INFO L93 Difference]: Finished difference Result 2466 states and 3505 transitions. [2024-11-28 03:39:26,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:39:26,399 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 267 [2024-11-28 03:39:26,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:26,412 INFO L225 Difference]: With dead ends: 2466 [2024-11-28 03:39:26,412 INFO L226 Difference]: Without dead ends: 2464 [2024-11-28 03:39:26,414 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2024-11-28 03:39:26,416 INFO L435 NwaCegarLoop]: 245 mSDtfsCounter, 208 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 1512 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:26,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 1512 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 997 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 03:39:26,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2024-11-28 03:39:26,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 2244. [2024-11-28 03:39:26,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2244 states, 1730 states have (on average 1.3277456647398844) internal successors, (2297), 1751 states have internal predecessors, (2297), 460 states have call successors, (460), 53 states have call predecessors, (460), 53 states have return successors, (460), 439 states have call predecessors, (460), 460 states have call successors, (460) [2024-11-28 03:39:26,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2244 states to 2244 states and 3217 transitions. [2024-11-28 03:39:26,668 INFO L78 Accepts]: Start accepts. Automaton has 2244 states and 3217 transitions. Word has length 267 [2024-11-28 03:39:26,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:26,669 INFO L471 AbstractCegarLoop]: Abstraction has 2244 states and 3217 transitions. [2024-11-28 03:39:26,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:39:26,669 INFO L276 IsEmpty]: Start isEmpty. Operand 2244 states and 3217 transitions. [2024-11-28 03:39:26,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-11-28 03:39:26,672 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:26,672 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:26,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 03:39:26,672 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:26,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:26,673 INFO L85 PathProgramCache]: Analyzing trace with hash 209550501, now seen corresponding path program 1 times [2024-11-28 03:39:26,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:26,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130335350] [2024-11-28 03:39:26,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:26,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:30,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:39:30,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:30,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130335350] [2024-11-28 03:39:30,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130335350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:30,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:39:30,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-28 03:39:30,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237506715] [2024-11-28 03:39:30,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:30,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:39:30,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:30,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:39:30,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:39:30,331 INFO L87 Difference]: Start difference. First operand 2244 states and 3217 transitions. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:39:31,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:31,676 INFO L93 Difference]: Finished difference Result 2710 states and 3797 transitions. [2024-11-28 03:39:31,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:39:31,677 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 267 [2024-11-28 03:39:31,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:31,692 INFO L225 Difference]: With dead ends: 2710 [2024-11-28 03:39:31,692 INFO L226 Difference]: Without dead ends: 2708 [2024-11-28 03:39:31,694 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:39:31,695 INFO L435 NwaCegarLoop]: 251 mSDtfsCounter, 90 mSDsluCounter, 1797 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 2048 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:31,695 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 2048 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 03:39:31,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2708 states. [2024-11-28 03:39:31,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2708 to 2381. [2024-11-28 03:39:31,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2381 states, 1864 states have (on average 1.3245708154506437) internal successors, (2469), 1886 states have internal predecessors, (2469), 462 states have call successors, (462), 54 states have call predecessors, (462), 54 states have return successors, (462), 440 states have call predecessors, (462), 462 states have call successors, (462) [2024-11-28 03:39:31,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2381 states to 2381 states and 3393 transitions. [2024-11-28 03:39:31,990 INFO L78 Accepts]: Start accepts. Automaton has 2381 states and 3393 transitions. Word has length 267 [2024-11-28 03:39:31,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:31,991 INFO L471 AbstractCegarLoop]: Abstraction has 2381 states and 3393 transitions. [2024-11-28 03:39:31,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:39:31,991 INFO L276 IsEmpty]: Start isEmpty. Operand 2381 states and 3393 transitions. [2024-11-28 03:39:31,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-11-28 03:39:31,994 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:31,994 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:31,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-28 03:39:31,994 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:31,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:31,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1373198179, now seen corresponding path program 1 times [2024-11-28 03:39:31,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:31,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834519744] [2024-11-28 03:39:31,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:31,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:32,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:36,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:39:36,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:36,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834519744] [2024-11-28 03:39:36,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834519744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:36,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:39:36,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-28 03:39:36,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719271854] [2024-11-28 03:39:36,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:36,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:39:36,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:36,174 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:39:36,174 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:39:36,174 INFO L87 Difference]: Start difference. First operand 2381 states and 3393 transitions. Second operand has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-28 03:39:38,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:38,583 INFO L93 Difference]: Finished difference Result 3766 states and 5363 transitions. [2024-11-28 03:39:38,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:39:38,584 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 267 [2024-11-28 03:39:38,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:38,597 INFO L225 Difference]: With dead ends: 3766 [2024-11-28 03:39:38,597 INFO L226 Difference]: Without dead ends: 2481 [2024-11-28 03:39:38,600 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:39:38,601 INFO L435 NwaCegarLoop]: 199 mSDtfsCounter, 364 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:38,601 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 1145 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 03:39:38,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2481 states. [2024-11-28 03:39:38,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2481 to 2392. [2024-11-28 03:39:38,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2392 states, 1875 states have (on average 1.3114666666666666) internal successors, (2459), 1897 states have internal predecessors, (2459), 462 states have call successors, (462), 54 states have call predecessors, (462), 54 states have return successors, (462), 440 states have call predecessors, (462), 462 states have call successors, (462) [2024-11-28 03:39:38,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2392 states to 2392 states and 3383 transitions. [2024-11-28 03:39:38,835 INFO L78 Accepts]: Start accepts. Automaton has 2392 states and 3383 transitions. Word has length 267 [2024-11-28 03:39:38,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:38,836 INFO L471 AbstractCegarLoop]: Abstraction has 2392 states and 3383 transitions. [2024-11-28 03:39:38,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-28 03:39:38,836 INFO L276 IsEmpty]: Start isEmpty. Operand 2392 states and 3383 transitions. [2024-11-28 03:39:38,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-11-28 03:39:38,839 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:38,839 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:38,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-28 03:39:38,839 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:38,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:38,840 INFO L85 PathProgramCache]: Analyzing trace with hash 58635875, now seen corresponding path program 1 times [2024-11-28 03:39:38,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:38,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085202050] [2024-11-28 03:39:38,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:38,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:38,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:43,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:39:43,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:43,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085202050] [2024-11-28 03:39:43,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085202050] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:43,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:39:43,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-28 03:39:43,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146961487] [2024-11-28 03:39:43,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:43,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:39:43,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:43,558 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:39:43,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:39:43,559 INFO L87 Difference]: Start difference. First operand 2392 states and 3383 transitions. Second operand has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:39:44,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:44,903 INFO L93 Difference]: Finished difference Result 2668 states and 3722 transitions. [2024-11-28 03:39:44,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:39:44,904 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 267 [2024-11-28 03:39:44,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:44,915 INFO L225 Difference]: With dead ends: 2668 [2024-11-28 03:39:44,915 INFO L226 Difference]: Without dead ends: 2666 [2024-11-28 03:39:44,917 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-11-28 03:39:44,919 INFO L435 NwaCegarLoop]: 229 mSDtfsCounter, 165 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:44,921 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1761 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 03:39:44,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2666 states. [2024-11-28 03:39:45,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2666 to 2329. [2024-11-28 03:39:45,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2329 states, 1812 states have (on average 1.304083885209713) internal successors, (2363), 1834 states have internal predecessors, (2363), 462 states have call successors, (462), 54 states have call predecessors, (462), 54 states have return successors, (462), 440 states have call predecessors, (462), 462 states have call successors, (462) [2024-11-28 03:39:45,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2329 states to 2329 states and 3287 transitions. [2024-11-28 03:39:45,217 INFO L78 Accepts]: Start accepts. Automaton has 2329 states and 3287 transitions. Word has length 267 [2024-11-28 03:39:45,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:45,217 INFO L471 AbstractCegarLoop]: Abstraction has 2329 states and 3287 transitions. [2024-11-28 03:39:45,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:39:45,218 INFO L276 IsEmpty]: Start isEmpty. Operand 2329 states and 3287 transitions. [2024-11-28 03:39:45,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-11-28 03:39:45,220 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:45,221 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:45,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-28 03:39:45,221 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:45,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:45,222 INFO L85 PathProgramCache]: Analyzing trace with hash 93334501, now seen corresponding path program 1 times [2024-11-28 03:39:45,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:45,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531994793] [2024-11-28 03:39:45,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:45,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:51,012 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:39:51,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:51,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531994793] [2024-11-28 03:39:51,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531994793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:51,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:39:51,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2024-11-28 03:39:51,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974296719] [2024-11-28 03:39:51,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:51,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 03:39:51,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:51,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 03:39:51,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2024-11-28 03:39:51,014 INFO L87 Difference]: Start difference. First operand 2329 states and 3287 transitions. Second operand has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 23 states have internal predecessors, (60), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2024-11-28 03:39:58,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:58,157 INFO L93 Difference]: Finished difference Result 2557 states and 3574 transitions. [2024-11-28 03:39:58,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 03:39:58,157 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 23 states have internal predecessors, (60), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 267 [2024-11-28 03:39:58,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:58,169 INFO L225 Difference]: With dead ends: 2557 [2024-11-28 03:39:58,169 INFO L226 Difference]: Without dead ends: 2555 [2024-11-28 03:39:58,171 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=359, Invalid=1281, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 03:39:58,172 INFO L435 NwaCegarLoop]: 201 mSDtfsCounter, 601 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 2589 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 1865 SdHoareTripleChecker+Invalid, 2807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 2589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:58,172 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [601 Valid, 1865 Invalid, 2807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 2589 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-28 03:39:58,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2555 states. [2024-11-28 03:39:58,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2555 to 2330. [2024-11-28 03:39:58,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2330 states, 1813 states have (on average 1.3039161610590182) internal successors, (2364), 1835 states have internal predecessors, (2364), 462 states have call successors, (462), 54 states have call predecessors, (462), 54 states have return successors, (462), 440 states have call predecessors, (462), 462 states have call successors, (462) [2024-11-28 03:39:58,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2330 states to 2330 states and 3288 transitions. [2024-11-28 03:39:58,461 INFO L78 Accepts]: Start accepts. Automaton has 2330 states and 3288 transitions. Word has length 267 [2024-11-28 03:39:58,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:58,461 INFO L471 AbstractCegarLoop]: Abstraction has 2330 states and 3288 transitions. [2024-11-28 03:39:58,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 23 states have internal predecessors, (60), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2024-11-28 03:39:58,462 INFO L276 IsEmpty]: Start isEmpty. Operand 2330 states and 3288 transitions. [2024-11-28 03:39:58,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-11-28 03:39:58,464 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:58,464 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:58,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-28 03:39:58,464 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:58,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:58,465 INFO L85 PathProgramCache]: Analyzing trace with hash 516036327, now seen corresponding path program 1 times [2024-11-28 03:39:58,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:58,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923955507] [2024-11-28 03:39:58,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:58,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:01,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:40:01,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:01,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923955507] [2024-11-28 03:40:01,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923955507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:01,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:40:01,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-28 03:40:01,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447464953] [2024-11-28 03:40:01,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:01,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:40:01,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:01,156 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:40:01,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:40:01,157 INFO L87 Difference]: Start difference. First operand 2330 states and 3288 transitions. Second operand has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:40:03,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:03,227 INFO L93 Difference]: Finished difference Result 2386 states and 3349 transitions. [2024-11-28 03:40:03,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:40:03,228 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 267 [2024-11-28 03:40:03,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:03,240 INFO L225 Difference]: With dead ends: 2386 [2024-11-28 03:40:03,240 INFO L226 Difference]: Without dead ends: 2384 [2024-11-28 03:40:03,242 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:40:03,242 INFO L435 NwaCegarLoop]: 271 mSDtfsCounter, 262 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 1883 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:03,243 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 1883 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 03:40:03,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2384 states. [2024-11-28 03:40:03,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2384 to 2324. [2024-11-28 03:40:03,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2324 states, 1807 states have (on average 1.3032650802434975) internal successors, (2355), 1829 states have internal predecessors, (2355), 462 states have call successors, (462), 54 states have call predecessors, (462), 54 states have return successors, (462), 440 states have call predecessors, (462), 462 states have call successors, (462) [2024-11-28 03:40:03,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2324 states to 2324 states and 3279 transitions. [2024-11-28 03:40:03,565 INFO L78 Accepts]: Start accepts. Automaton has 2324 states and 3279 transitions. Word has length 267 [2024-11-28 03:40:03,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:03,566 INFO L471 AbstractCegarLoop]: Abstraction has 2324 states and 3279 transitions. [2024-11-28 03:40:03,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:40:03,566 INFO L276 IsEmpty]: Start isEmpty. Operand 2324 states and 3279 transitions. [2024-11-28 03:40:03,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-11-28 03:40:03,569 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:03,569 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:03,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-28 03:40:03,570 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:03,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:03,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1227459428, now seen corresponding path program 1 times [2024-11-28 03:40:03,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:03,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422602723] [2024-11-28 03:40:03,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:03,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:03,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:40:03,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:03,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422602723] [2024-11-28 03:40:03,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422602723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:03,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:40:03,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:40:03,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445903185] [2024-11-28 03:40:03,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:03,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:40:03,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:03,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:40:03,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:40:03,749 INFO L87 Difference]: Start difference. First operand 2324 states and 3279 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:40:04,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:04,237 INFO L93 Difference]: Finished difference Result 4738 states and 6644 transitions. [2024-11-28 03:40:04,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:40:04,238 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), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 269 [2024-11-28 03:40:04,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:04,251 INFO L225 Difference]: With dead ends: 4738 [2024-11-28 03:40:04,252 INFO L226 Difference]: Without dead ends: 2679 [2024-11-28 03:40:04,257 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:40:04,257 INFO L435 NwaCegarLoop]: 237 mSDtfsCounter, 65 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:04,258 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 817 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:40:04,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2679 states. [2024-11-28 03:40:04,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2679 to 2529. [2024-11-28 03:40:04,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2529 states, 1922 states have (on average 1.2819979188345474) internal successors, (2464), 1947 states have internal predecessors, (2464), 532 states have call successors, (532), 74 states have call predecessors, (532), 74 states have return successors, (532), 507 states have call predecessors, (532), 532 states have call successors, (532) [2024-11-28 03:40:04,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2529 states to 2529 states and 3528 transitions. [2024-11-28 03:40:04,628 INFO L78 Accepts]: Start accepts. Automaton has 2529 states and 3528 transitions. Word has length 269 [2024-11-28 03:40:04,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:04,628 INFO L471 AbstractCegarLoop]: Abstraction has 2529 states and 3528 transitions. [2024-11-28 03:40:04,628 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), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:40:04,629 INFO L276 IsEmpty]: Start isEmpty. Operand 2529 states and 3528 transitions. [2024-11-28 03:40:04,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-11-28 03:40:04,631 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:04,631 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:04,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-28 03:40:04,631 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:04,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:04,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1879472022, now seen corresponding path program 1 times [2024-11-28 03:40:04,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:04,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327535116] [2024-11-28 03:40:04,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:04,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:04,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:04,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:40:04,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:04,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327535116] [2024-11-28 03:40:04,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327535116] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:04,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:40:04,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:40:04,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312174418] [2024-11-28 03:40:04,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:04,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:40:04,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:04,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:40:04,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:40:04,795 INFO L87 Difference]: Start difference. First operand 2529 states and 3528 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:40:05,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:05,369 INFO L93 Difference]: Finished difference Result 5691 states and 7889 transitions. [2024-11-28 03:40:05,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:40:05,369 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), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 269 [2024-11-28 03:40:05,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:05,384 INFO L225 Difference]: With dead ends: 5691 [2024-11-28 03:40:05,385 INFO L226 Difference]: Without dead ends: 3399 [2024-11-28 03:40:05,391 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:40:05,392 INFO L435 NwaCegarLoop]: 226 mSDtfsCounter, 67 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:05,392 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 766 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:40:05,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3399 states. [2024-11-28 03:40:05,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3399 to 3222. [2024-11-28 03:40:05,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3222 states, 2511 states have (on average 1.2819593787335724) internal successors, (3219), 2548 states have internal predecessors, (3219), 616 states have call successors, (616), 94 states have call predecessors, (616), 94 states have return successors, (616), 579 states have call predecessors, (616), 616 states have call successors, (616) [2024-11-28 03:40:05,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3222 states to 3222 states and 4451 transitions. [2024-11-28 03:40:05,799 INFO L78 Accepts]: Start accepts. Automaton has 3222 states and 4451 transitions. Word has length 269 [2024-11-28 03:40:05,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:05,800 INFO L471 AbstractCegarLoop]: Abstraction has 3222 states and 4451 transitions. [2024-11-28 03:40:05,800 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), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:40:05,800 INFO L276 IsEmpty]: Start isEmpty. Operand 3222 states and 4451 transitions. [2024-11-28 03:40:05,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-28 03:40:05,803 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:05,803 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:05,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-28 03:40:05,803 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:05,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:05,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1778241831, now seen corresponding path program 1 times [2024-11-28 03:40:05,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:05,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879791321] [2024-11-28 03:40:05,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:05,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:05,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:05,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:40:05,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:05,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879791321] [2024-11-28 03:40:05,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879791321] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:05,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:40:05,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:40:05,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255061736] [2024-11-28 03:40:05,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:05,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:40:05,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:05,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:40:05,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:40:05,912 INFO L87 Difference]: Start difference. First operand 3222 states and 4451 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:40:06,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:06,579 INFO L93 Difference]: Finished difference Result 7516 states and 10210 transitions. [2024-11-28 03:40:06,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:40:06,580 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), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 270 [2024-11-28 03:40:06,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:06,602 INFO L225 Difference]: With dead ends: 7516 [2024-11-28 03:40:06,602 INFO L226 Difference]: Without dead ends: 4533 [2024-11-28 03:40:06,611 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:40:06,612 INFO L435 NwaCegarLoop]: 231 mSDtfsCounter, 55 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:06,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 412 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:40:06,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4533 states. [2024-11-28 03:40:07,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4533 to 4408. [2024-11-28 03:40:07,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4408 states, 3500 states have (on average 1.2394285714285713) internal successors, (4338), 3563 states have internal predecessors, (4338), 750 states have call successors, (750), 157 states have call predecessors, (750), 157 states have return successors, (750), 687 states have call predecessors, (750), 750 states have call successors, (750) [2024-11-28 03:40:07,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4408 states to 4408 states and 5838 transitions. [2024-11-28 03:40:07,083 INFO L78 Accepts]: Start accepts. Automaton has 4408 states and 5838 transitions. Word has length 270 [2024-11-28 03:40:07,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:07,084 INFO L471 AbstractCegarLoop]: Abstraction has 4408 states and 5838 transitions. [2024-11-28 03:40:07,084 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), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:40:07,084 INFO L276 IsEmpty]: Start isEmpty. Operand 4408 states and 5838 transitions. [2024-11-28 03:40:07,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-28 03:40:07,087 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:07,087 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:07,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-28 03:40:07,088 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:07,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:07,089 INFO L85 PathProgramCache]: Analyzing trace with hash -895746525, now seen corresponding path program 1 times [2024-11-28 03:40:07,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:07,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052732746] [2024-11-28 03:40:07,089 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:07,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:11,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:40:11,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:11,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052732746] [2024-11-28 03:40:11,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052732746] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:11,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:40:11,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-28 03:40:11,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466805035] [2024-11-28 03:40:11,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:11,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:40:11,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:11,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:40:11,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:40:11,497 INFO L87 Difference]: Start difference. First operand 4408 states and 5838 transitions. Second operand has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:40:14,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:14,501 INFO L93 Difference]: Finished difference Result 4679 states and 6173 transitions. [2024-11-28 03:40:14,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 03:40:14,502 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 271 [2024-11-28 03:40:14,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:14,526 INFO L225 Difference]: With dead ends: 4679 [2024-11-28 03:40:14,526 INFO L226 Difference]: Without dead ends: 4677 [2024-11-28 03:40:14,529 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2024-11-28 03:40:14,530 INFO L435 NwaCegarLoop]: 260 mSDtfsCounter, 215 mSDsluCounter, 2003 mSDsCounter, 0 mSdLazyCounter, 1363 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 2263 SdHoareTripleChecker+Invalid, 1380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:14,530 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 2263 Invalid, 1380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1363 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-28 03:40:14,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4677 states. [2024-11-28 03:40:15,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4677 to 4585. [2024-11-28 03:40:15,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4585 states, 3632 states have (on average 1.236784140969163) internal successors, (4492), 3699 states have internal predecessors, (4492), 786 states have call successors, (786), 166 states have call predecessors, (786), 166 states have return successors, (786), 719 states have call predecessors, (786), 786 states have call successors, (786) [2024-11-28 03:40:15,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4585 states to 4585 states and 6064 transitions. [2024-11-28 03:40:15,374 INFO L78 Accepts]: Start accepts. Automaton has 4585 states and 6064 transitions. Word has length 271 [2024-11-28 03:40:15,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:15,375 INFO L471 AbstractCegarLoop]: Abstraction has 4585 states and 6064 transitions. [2024-11-28 03:40:15,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:40:15,375 INFO L276 IsEmpty]: Start isEmpty. Operand 4585 states and 6064 transitions. [2024-11-28 03:40:15,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-28 03:40:15,378 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:15,378 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:15,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-28 03:40:15,379 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:15,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:15,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1469735645, now seen corresponding path program 1 times [2024-11-28 03:40:15,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:15,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63244801] [2024-11-28 03:40:15,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:15,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:15,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:18,466 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:40:18,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:18,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63244801] [2024-11-28 03:40:18,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63244801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:18,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:40:18,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-28 03:40:18,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10435626] [2024-11-28 03:40:18,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:18,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:40:18,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:18,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:40:18,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:40:18,468 INFO L87 Difference]: Start difference. First operand 4585 states and 6064 transitions. Second operand has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:40:20,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:20,400 INFO L93 Difference]: Finished difference Result 5303 states and 6933 transitions. [2024-11-28 03:40:20,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:40:20,401 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 271 [2024-11-28 03:40:20,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:20,425 INFO L225 Difference]: With dead ends: 5303 [2024-11-28 03:40:20,425 INFO L226 Difference]: Without dead ends: 5301 [2024-11-28 03:40:20,428 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:40:20,429 INFO L435 NwaCegarLoop]: 270 mSDtfsCounter, 146 mSDsluCounter, 2118 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 2388 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:20,429 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 2388 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:40:20,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5301 states. [2024-11-28 03:40:21,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5301 to 4410. [2024-11-28 03:40:21,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4410 states, 3551 states have (on average 1.2441565756125035) internal successors, (4418), 3609 states have internal predecessors, (4418), 710 states have call successors, (710), 148 states have call predecessors, (710), 148 states have return successors, (710), 652 states have call predecessors, (710), 710 states have call successors, (710) [2024-11-28 03:40:21,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4410 states to 4410 states and 5838 transitions. [2024-11-28 03:40:21,192 INFO L78 Accepts]: Start accepts. Automaton has 4410 states and 5838 transitions. Word has length 271 [2024-11-28 03:40:21,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:21,194 INFO L471 AbstractCegarLoop]: Abstraction has 4410 states and 5838 transitions. [2024-11-28 03:40:21,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:40:21,194 INFO L276 IsEmpty]: Start isEmpty. Operand 4410 states and 5838 transitions. [2024-11-28 03:40:21,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-28 03:40:21,197 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:21,198 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:21,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-28 03:40:21,198 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:21,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:21,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1814114401, now seen corresponding path program 1 times [2024-11-28 03:40:21,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:21,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271322018] [2024-11-28 03:40:21,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:21,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:28,130 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:40:28,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:28,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271322018] [2024-11-28 03:40:28,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271322018] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:28,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:40:28,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2024-11-28 03:40:28,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942533426] [2024-11-28 03:40:28,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:28,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 03:40:28,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:28,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 03:40:28,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-11-28 03:40:28,133 INFO L87 Difference]: Start difference. First operand 4410 states and 5838 transitions. Second operand has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:40:39,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:39,007 INFO L93 Difference]: Finished difference Result 5755 states and 7406 transitions. [2024-11-28 03:40:39,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-28 03:40:39,008 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 271 [2024-11-28 03:40:39,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:39,031 INFO L225 Difference]: With dead ends: 5755 [2024-11-28 03:40:39,031 INFO L226 Difference]: Without dead ends: 5753 [2024-11-28 03:40:39,034 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=383, Invalid=1779, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 03:40:39,035 INFO L435 NwaCegarLoop]: 199 mSDtfsCounter, 610 mSDsluCounter, 2359 mSDsCounter, 0 mSdLazyCounter, 2620 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 2558 SdHoareTripleChecker+Invalid, 2778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 2620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:39,036 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 2558 Invalid, 2778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 2620 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-28 03:40:39,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5753 states. [2024-11-28 03:40:39,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5753 to 4402. [2024-11-28 03:40:39,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4402 states, 3543 states have (on average 1.244425627998871) internal successors, (4409), 3601 states have internal predecessors, (4409), 710 states have call successors, (710), 148 states have call predecessors, (710), 148 states have return successors, (710), 652 states have call predecessors, (710), 710 states have call successors, (710) [2024-11-28 03:40:39,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4402 states to 4402 states and 5829 transitions. [2024-11-28 03:40:39,725 INFO L78 Accepts]: Start accepts. Automaton has 4402 states and 5829 transitions. Word has length 271 [2024-11-28 03:40:39,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:39,726 INFO L471 AbstractCegarLoop]: Abstraction has 4402 states and 5829 transitions. [2024-11-28 03:40:39,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:40:39,726 INFO L276 IsEmpty]: Start isEmpty. Operand 4402 states and 5829 transitions. [2024-11-28 03:40:39,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-28 03:40:39,729 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:39,729 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:39,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-28 03:40:39,729 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:39,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:39,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1810872869, now seen corresponding path program 1 times [2024-11-28 03:40:39,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:39,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909592380] [2024-11-28 03:40:39,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:39,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:42,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:40:42,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:42,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909592380] [2024-11-28 03:40:42,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909592380] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:42,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:40:42,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-28 03:40:42,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688764577] [2024-11-28 03:40:42,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:42,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:40:42,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:42,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:40:42,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:40:42,116 INFO L87 Difference]: Start difference. First operand 4402 states and 5829 transitions. Second operand has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:40:44,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:44,413 INFO L93 Difference]: Finished difference Result 4749 states and 6245 transitions. [2024-11-28 03:40:44,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 03:40:44,414 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 271 [2024-11-28 03:40:44,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:44,435 INFO L225 Difference]: With dead ends: 4749 [2024-11-28 03:40:44,435 INFO L226 Difference]: Without dead ends: 4747 [2024-11-28 03:40:44,438 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2024-11-28 03:40:44,438 INFO L435 NwaCegarLoop]: 248 mSDtfsCounter, 199 mSDsluCounter, 1951 mSDsCounter, 0 mSdLazyCounter, 1276 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 2199 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:44,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 2199 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1276 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 03:40:44,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4747 states. [2024-11-28 03:40:45,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4747 to 4717. [2024-11-28 03:40:45,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4717 states, 3769 states have (on average 1.2345449721411514) internal successors, (4653), 3833 states have internal predecessors, (4653), 778 states have call successors, (778), 169 states have call predecessors, (778), 169 states have return successors, (778), 714 states have call predecessors, (778), 778 states have call successors, (778) [2024-11-28 03:40:45,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4717 states to 4717 states and 6209 transitions. [2024-11-28 03:40:45,256 INFO L78 Accepts]: Start accepts. Automaton has 4717 states and 6209 transitions. Word has length 271 [2024-11-28 03:40:45,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:45,257 INFO L471 AbstractCegarLoop]: Abstraction has 4717 states and 6209 transitions. [2024-11-28 03:40:45,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:40:45,257 INFO L276 IsEmpty]: Start isEmpty. Operand 4717 states and 6209 transitions. [2024-11-28 03:40:45,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-28 03:40:45,260 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:45,261 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:45,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-28 03:40:45,261 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:45,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:45,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1236883749, now seen corresponding path program 1 times [2024-11-28 03:40:45,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:45,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588676673] [2024-11-28 03:40:45,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:45,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:45,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:50,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:40:50,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:50,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588676673] [2024-11-28 03:40:50,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588676673] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:50,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:40:50,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-28 03:40:50,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354119871] [2024-11-28 03:40:50,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:50,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 03:40:50,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:50,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 03:40:50,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:40:50,424 INFO L87 Difference]: Start difference. First operand 4717 states and 6209 transitions. Second operand has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:40:53,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:53,988 INFO L93 Difference]: Finished difference Result 6522 states and 8354 transitions. [2024-11-28 03:40:53,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 03:40:53,989 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 271 [2024-11-28 03:40:53,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:54,007 INFO L225 Difference]: With dead ends: 6522 [2024-11-28 03:40:54,007 INFO L226 Difference]: Without dead ends: 6520 [2024-11-28 03:40:54,010 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2024-11-28 03:40:54,011 INFO L435 NwaCegarLoop]: 250 mSDtfsCounter, 166 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 2633 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:54,011 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 2633 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1452 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-28 03:40:54,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6520 states. [2024-11-28 03:40:54,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6520 to 4777. [2024-11-28 03:40:54,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4777 states, 3826 states have (on average 1.233925771040251) internal successors, (4721), 3891 states have internal predecessors, (4721), 780 states have call successors, (780), 170 states have call predecessors, (780), 170 states have return successors, (780), 715 states have call predecessors, (780), 780 states have call successors, (780) [2024-11-28 03:40:54,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4777 states to 4777 states and 6281 transitions. [2024-11-28 03:40:54,687 INFO L78 Accepts]: Start accepts. Automaton has 4777 states and 6281 transitions. Word has length 271 [2024-11-28 03:40:54,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:54,687 INFO L471 AbstractCegarLoop]: Abstraction has 4777 states and 6281 transitions. [2024-11-28 03:40:54,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:40:54,688 INFO L276 IsEmpty]: Start isEmpty. Operand 4777 states and 6281 transitions. [2024-11-28 03:40:54,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-28 03:40:54,691 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:54,691 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:54,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-28 03:40:54,691 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:54,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:54,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1342560066, now seen corresponding path program 1 times [2024-11-28 03:40:54,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:54,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941646842] [2024-11-28 03:40:54,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:54,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:54,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:54,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:40:54,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:54,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941646842] [2024-11-28 03:40:54,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941646842] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:54,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:40:54,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:40:54,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925417522] [2024-11-28 03:40:54,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:54,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:40:54,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:54,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:40:54,812 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:40:54,813 INFO L87 Difference]: Start difference. First operand 4777 states and 6281 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:40:55,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:55,322 INFO L93 Difference]: Finished difference Result 8699 states and 11444 transitions. [2024-11-28 03:40:55,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:40:55,323 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), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 271 [2024-11-28 03:40:55,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:55,342 INFO L225 Difference]: With dead ends: 8699 [2024-11-28 03:40:55,342 INFO L226 Difference]: Without dead ends: 4170 [2024-11-28 03:40:55,352 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:40:55,353 INFO L435 NwaCegarLoop]: 223 mSDtfsCounter, 43 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:55,353 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 406 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:40:55,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4170 states. [2024-11-28 03:40:55,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4170 to 3595. [2024-11-28 03:40:55,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3595 states, 2862 states have (on average 1.2354996505939901) internal successors, (3536), 2896 states have internal predecessors, (3536), 610 states have call successors, (610), 122 states have call predecessors, (610), 122 states have return successors, (610), 576 states have call predecessors, (610), 610 states have call successors, (610) [2024-11-28 03:40:55,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3595 states to 3595 states and 4756 transitions. [2024-11-28 03:40:55,927 INFO L78 Accepts]: Start accepts. Automaton has 3595 states and 4756 transitions. Word has length 271 [2024-11-28 03:40:55,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:55,928 INFO L471 AbstractCegarLoop]: Abstraction has 3595 states and 4756 transitions. [2024-11-28 03:40:55,928 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), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:40:55,928 INFO L276 IsEmpty]: Start isEmpty. Operand 3595 states and 4756 transitions. [2024-11-28 03:40:55,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-28 03:40:55,931 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:55,931 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:55,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-28 03:40:55,931 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:55,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:55,932 INFO L85 PathProgramCache]: Analyzing trace with hash 582665187, now seen corresponding path program 1 times [2024-11-28 03:40:55,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:55,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369232740] [2024-11-28 03:40:55,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:55,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:01,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:41:01,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:01,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369232740] [2024-11-28 03:41:01,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369232740] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:01,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:41:01,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-28 03:41:01,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792200136] [2024-11-28 03:41:01,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:01,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 03:41:01,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:01,208 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 03:41:01,208 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2024-11-28 03:41:01,208 INFO L87 Difference]: Start difference. First operand 3595 states and 4756 transitions. Second operand has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-28 03:41:05,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:41:05,601 INFO L93 Difference]: Finished difference Result 3904 states and 5097 transitions. [2024-11-28 03:41:05,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 03:41:05,602 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 271 [2024-11-28 03:41:05,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:41:05,615 INFO L225 Difference]: With dead ends: 3904 [2024-11-28 03:41:05,615 INFO L226 Difference]: Without dead ends: 3902 [2024-11-28 03:41:05,617 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=250, Invalid=872, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 03:41:05,618 INFO L435 NwaCegarLoop]: 230 mSDtfsCounter, 567 mSDsluCounter, 1942 mSDsCounter, 0 mSdLazyCounter, 2153 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 2172 SdHoareTripleChecker+Invalid, 2194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:41:05,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 2172 Invalid, 2194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2153 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-28 03:41:05,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3902 states. [2024-11-28 03:41:05,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3902 to 3609. [2024-11-28 03:41:05,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3609 states, 2876 states have (on average 1.2353963838664812) internal successors, (3553), 2910 states have internal predecessors, (3553), 610 states have call successors, (610), 122 states have call predecessors, (610), 122 states have return successors, (610), 576 states have call predecessors, (610), 610 states have call successors, (610) [2024-11-28 03:41:05,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3609 states to 3609 states and 4773 transitions. [2024-11-28 03:41:05,976 INFO L78 Accepts]: Start accepts. Automaton has 3609 states and 4773 transitions. Word has length 271 [2024-11-28 03:41:05,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:41:05,976 INFO L471 AbstractCegarLoop]: Abstraction has 3609 states and 4773 transitions. [2024-11-28 03:41:05,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-28 03:41:05,976 INFO L276 IsEmpty]: Start isEmpty. Operand 3609 states and 4773 transitions. [2024-11-28 03:41:05,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-28 03:41:05,978 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:41:05,979 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:05,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-28 03:41:05,979 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:41:05,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:05,979 INFO L85 PathProgramCache]: Analyzing trace with hash 8676067, now seen corresponding path program 1 times [2024-11-28 03:41:05,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:05,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699033256] [2024-11-28 03:41:05,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:05,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:14,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:41:14,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:14,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699033256] [2024-11-28 03:41:14,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699033256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:14,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:41:14,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-28 03:41:14,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847676373] [2024-11-28 03:41:14,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:14,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 03:41:14,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:14,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 03:41:14,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:41:14,703 INFO L87 Difference]: Start difference. First operand 3609 states and 4773 transitions. Second operand has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-28 03:41:22,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:41:22,696 INFO L93 Difference]: Finished difference Result 3834 states and 5013 transitions. [2024-11-28 03:41:22,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 03:41:22,697 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 271 [2024-11-28 03:41:22,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:41:22,707 INFO L225 Difference]: With dead ends: 3834 [2024-11-28 03:41:22,707 INFO L226 Difference]: Without dead ends: 3832 [2024-11-28 03:41:22,709 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=225, Invalid=897, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 03:41:22,709 INFO L435 NwaCegarLoop]: 236 mSDtfsCounter, 374 mSDsluCounter, 2112 mSDsCounter, 0 mSdLazyCounter, 2611 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 2348 SdHoareTripleChecker+Invalid, 2623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:41:22,710 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 2348 Invalid, 2623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2611 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-28 03:41:22,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3832 states. [2024-11-28 03:41:23,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3832 to 3603. [2024-11-28 03:41:23,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3603 states, 2870 states have (on average 1.235191637630662) internal successors, (3545), 2904 states have internal predecessors, (3545), 610 states have call successors, (610), 122 states have call predecessors, (610), 122 states have return successors, (610), 576 states have call predecessors, (610), 610 states have call successors, (610) [2024-11-28 03:41:23,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3603 states to 3603 states and 4765 transitions. [2024-11-28 03:41:23,094 INFO L78 Accepts]: Start accepts. Automaton has 3603 states and 4765 transitions. Word has length 271 [2024-11-28 03:41:23,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:41:23,094 INFO L471 AbstractCegarLoop]: Abstraction has 3603 states and 4765 transitions. [2024-11-28 03:41:23,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-28 03:41:23,094 INFO L276 IsEmpty]: Start isEmpty. Operand 3603 states and 4765 transitions. [2024-11-28 03:41:23,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-28 03:41:23,096 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:41:23,096 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:23,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-28 03:41:23,096 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:41:23,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:23,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1005682715, now seen corresponding path program 1 times [2024-11-28 03:41:23,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:23,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686882424] [2024-11-28 03:41:23,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:23,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:23,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:28,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:41:28,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:28,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686882424] [2024-11-28 03:41:28,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686882424] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:28,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:41:28,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-28 03:41:28,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062403868] [2024-11-28 03:41:28,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:28,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 03:41:28,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:28,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 03:41:28,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:41:28,221 INFO L87 Difference]: Start difference. First operand 3603 states and 4765 transitions. Second operand has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-28 03:41:32,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:41:32,968 INFO L93 Difference]: Finished difference Result 3810 states and 4990 transitions. [2024-11-28 03:41:32,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 03:41:32,969 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 271 [2024-11-28 03:41:32,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:41:32,983 INFO L225 Difference]: With dead ends: 3810 [2024-11-28 03:41:32,983 INFO L226 Difference]: Without dead ends: 3808 [2024-11-28 03:41:32,986 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=160, Invalid=710, Unknown=0, NotChecked=0, Total=870 [2024-11-28 03:41:32,987 INFO L435 NwaCegarLoop]: 248 mSDtfsCounter, 332 mSDsluCounter, 1935 mSDsCounter, 0 mSdLazyCounter, 2179 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 2183 SdHoareTripleChecker+Invalid, 2356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 2179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:41:32,987 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 2183 Invalid, 2356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 2179 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-28 03:41:32,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3808 states. [2024-11-28 03:41:33,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3808 to 3604. [2024-11-28 03:41:33,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3604 states, 2871 states have (on average 1.2351097178683386) internal successors, (3546), 2905 states have internal predecessors, (3546), 610 states have call successors, (610), 122 states have call predecessors, (610), 122 states have return successors, (610), 576 states have call predecessors, (610), 610 states have call successors, (610) [2024-11-28 03:41:33,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3604 states to 3604 states and 4766 transitions. [2024-11-28 03:41:33,430 INFO L78 Accepts]: Start accepts. Automaton has 3604 states and 4766 transitions. Word has length 271 [2024-11-28 03:41:33,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:41:33,431 INFO L471 AbstractCegarLoop]: Abstraction has 3604 states and 4766 transitions. [2024-11-28 03:41:33,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-28 03:41:33,431 INFO L276 IsEmpty]: Start isEmpty. Operand 3604 states and 4766 transitions. [2024-11-28 03:41:33,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-28 03:41:33,433 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:41:33,434 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:33,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-28 03:41:33,434 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:41:33,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:33,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1954663011, now seen corresponding path program 1 times [2024-11-28 03:41:33,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:33,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255238878] [2024-11-28 03:41:33,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:33,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:33,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:37,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:41:37,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:37,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255238878] [2024-11-28 03:41:37,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255238878] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:37,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:41:37,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-28 03:41:37,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207484977] [2024-11-28 03:41:37,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:37,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 03:41:37,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:37,223 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 03:41:37,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:41:37,223 INFO L87 Difference]: Start difference. First operand 3604 states and 4766 transitions. Second operand has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:41:42,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:41:42,351 INFO L93 Difference]: Finished difference Result 4124 states and 5353 transitions. [2024-11-28 03:41:42,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 03:41:42,352 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 271 [2024-11-28 03:41:42,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:41:42,361 INFO L225 Difference]: With dead ends: 4124 [2024-11-28 03:41:42,361 INFO L226 Difference]: Without dead ends: 4122 [2024-11-28 03:41:42,363 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2024-11-28 03:41:42,363 INFO L435 NwaCegarLoop]: 216 mSDtfsCounter, 301 mSDsluCounter, 2411 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 2627 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:41:42,364 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 2627 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1242 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-28 03:41:42,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4122 states. [2024-11-28 03:41:42,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4122 to 3571. [2024-11-28 03:41:42,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3571 states, 2838 states have (on average 1.233967582804792) internal successors, (3502), 2872 states have internal predecessors, (3502), 610 states have call successors, (610), 122 states have call predecessors, (610), 122 states have return successors, (610), 576 states have call predecessors, (610), 610 states have call successors, (610) [2024-11-28 03:41:42,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3571 states to 3571 states and 4722 transitions. [2024-11-28 03:41:42,726 INFO L78 Accepts]: Start accepts. Automaton has 3571 states and 4722 transitions. Word has length 271 [2024-11-28 03:41:42,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:41:42,727 INFO L471 AbstractCegarLoop]: Abstraction has 3571 states and 4722 transitions. [2024-11-28 03:41:42,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:41:42,727 INFO L276 IsEmpty]: Start isEmpty. Operand 3571 states and 4722 transitions. [2024-11-28 03:41:42,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-28 03:41:42,729 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:41:42,729 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:42,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-28 03:41:42,729 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:41:42,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:42,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1377432359, now seen corresponding path program 1 times [2024-11-28 03:41:42,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:42,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109004992] [2024-11-28 03:41:42,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:42,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:42,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:45,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:41:45,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:45,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109004992] [2024-11-28 03:41:45,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109004992] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:45,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:41:45,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-28 03:41:45,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656086929] [2024-11-28 03:41:45,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:45,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:41:45,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:45,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:41:45,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:41:45,634 INFO L87 Difference]: Start difference. First operand 3571 states and 4722 transitions. Second operand has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:41:47,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:41:47,322 INFO L93 Difference]: Finished difference Result 4065 states and 5266 transitions. [2024-11-28 03:41:47,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:41:47,323 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 271 [2024-11-28 03:41:47,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:41:47,334 INFO L225 Difference]: With dead ends: 4065 [2024-11-28 03:41:47,334 INFO L226 Difference]: Without dead ends: 4063 [2024-11-28 03:41:47,335 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2024-11-28 03:41:47,336 INFO L435 NwaCegarLoop]: 248 mSDtfsCounter, 96 mSDsluCounter, 2038 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 2286 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:41:47,336 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 2286 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 03:41:47,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4063 states. [2024-11-28 03:41:47,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4063 to 3529. [2024-11-28 03:41:47,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3529 states, 2804 states have (on average 1.2346647646219686) internal successors, (3462), 2835 states have internal predecessors, (3462), 602 states have call successors, (602), 122 states have call predecessors, (602), 122 states have return successors, (602), 571 states have call predecessors, (602), 602 states have call successors, (602) [2024-11-28 03:41:47,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3529 states to 3529 states and 4666 transitions. [2024-11-28 03:41:47,755 INFO L78 Accepts]: Start accepts. Automaton has 3529 states and 4666 transitions. Word has length 271 [2024-11-28 03:41:47,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:41:47,756 INFO L471 AbstractCegarLoop]: Abstraction has 3529 states and 4666 transitions. [2024-11-28 03:41:47,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:41:47,757 INFO L276 IsEmpty]: Start isEmpty. Operand 3529 states and 4666 transitions. [2024-11-28 03:41:47,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-28 03:41:47,760 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:41:47,760 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:47,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-28 03:41:47,760 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:41:47,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:47,761 INFO L85 PathProgramCache]: Analyzing trace with hash 366315109, now seen corresponding path program 1 times [2024-11-28 03:41:47,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:47,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271450207] [2024-11-28 03:41:47,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:47,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:47,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:51,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:41:51,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:51,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271450207] [2024-11-28 03:41:51,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271450207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:51,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:41:51,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-28 03:41:51,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194148390] [2024-11-28 03:41:51,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:51,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 03:41:51,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:51,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 03:41:51,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2024-11-28 03:41:51,653 INFO L87 Difference]: Start difference. First operand 3529 states and 4666 transitions. Second operand has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:41:55,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:41:55,065 INFO L93 Difference]: Finished difference Result 3847 states and 5031 transitions. [2024-11-28 03:41:55,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 03:41:55,065 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 271 [2024-11-28 03:41:55,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:41:55,075 INFO L225 Difference]: With dead ends: 3847 [2024-11-28 03:41:55,075 INFO L226 Difference]: Without dead ends: 3845 [2024-11-28 03:41:55,077 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2024-11-28 03:41:55,077 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 214 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 2024 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:41:55,078 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 2024 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-28 03:41:55,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3845 states. [2024-11-28 03:41:55,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3845 to 3506. [2024-11-28 03:41:55,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3506 states, 2781 states have (on average 1.2351672060409924) internal successors, (3435), 2812 states have internal predecessors, (3435), 602 states have call successors, (602), 122 states have call predecessors, (602), 122 states have return successors, (602), 571 states have call predecessors, (602), 602 states have call successors, (602) [2024-11-28 03:41:55,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3506 states to 3506 states and 4639 transitions. [2024-11-28 03:41:55,458 INFO L78 Accepts]: Start accepts. Automaton has 3506 states and 4639 transitions. Word has length 271 [2024-11-28 03:41:55,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:41:55,459 INFO L471 AbstractCegarLoop]: Abstraction has 3506 states and 4639 transitions. [2024-11-28 03:41:55,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:41:55,459 INFO L276 IsEmpty]: Start isEmpty. Operand 3506 states and 4639 transitions. [2024-11-28 03:41:55,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-28 03:41:55,460 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:41:55,461 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:55,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-28 03:41:55,461 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:41:55,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:55,461 INFO L85 PathProgramCache]: Analyzing trace with hash 723213797, now seen corresponding path program 1 times [2024-11-28 03:41:55,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:55,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726704809] [2024-11-28 03:41:55,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:55,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:58,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:41:58,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:58,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726704809] [2024-11-28 03:41:58,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726704809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:58,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:41:58,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-28 03:41:58,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770983510] [2024-11-28 03:41:58,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:58,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:41:58,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:58,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:41:58,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:41:58,194 INFO L87 Difference]: Start difference. First operand 3506 states and 4639 transitions. Second operand has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:41:59,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:41:59,847 INFO L93 Difference]: Finished difference Result 3690 states and 4847 transitions. [2024-11-28 03:41:59,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:41:59,848 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 271 [2024-11-28 03:41:59,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:41:59,854 INFO L225 Difference]: With dead ends: 3690 [2024-11-28 03:41:59,854 INFO L226 Difference]: Without dead ends: 3688 [2024-11-28 03:41:59,855 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:41:59,856 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 148 mSDsluCounter, 1808 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 2026 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:41:59,856 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 2026 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 03:41:59,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3688 states. [2024-11-28 03:42:00,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3688 to 3537. [2024-11-28 03:42:00,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3537 states, 2812 states have (on average 1.2357752489331437) internal successors, (3475), 2843 states have internal predecessors, (3475), 602 states have call successors, (602), 122 states have call predecessors, (602), 122 states have return successors, (602), 571 states have call predecessors, (602), 602 states have call successors, (602) [2024-11-28 03:42:00,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3537 states to 3537 states and 4679 transitions. [2024-11-28 03:42:00,187 INFO L78 Accepts]: Start accepts. Automaton has 3537 states and 4679 transitions. Word has length 271 [2024-11-28 03:42:00,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:00,187 INFO L471 AbstractCegarLoop]: Abstraction has 3537 states and 4679 transitions. [2024-11-28 03:42:00,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:42:00,187 INFO L276 IsEmpty]: Start isEmpty. Operand 3537 states and 4679 transitions. [2024-11-28 03:42:00,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-28 03:42:00,189 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:00,189 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:42:00,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-11-28 03:42:00,190 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:00,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:00,190 INFO L85 PathProgramCache]: Analyzing trace with hash 149224677, now seen corresponding path program 1 times [2024-11-28 03:42:00,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:00,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482421410] [2024-11-28 03:42:00,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:42:00,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:00,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:42:04,259 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:42:04,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:04,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482421410] [2024-11-28 03:42:04,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482421410] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:42:04,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:42:04,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-28 03:42:04,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265414278] [2024-11-28 03:42:04,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:42:04,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 03:42:04,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:04,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 03:42:04,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:42:04,262 INFO L87 Difference]: Start difference. First operand 3537 states and 4679 transitions. Second operand has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-28 03:42:08,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:42:08,717 INFO L93 Difference]: Finished difference Result 3669 states and 4828 transitions. [2024-11-28 03:42:08,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 03:42:08,718 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 271 [2024-11-28 03:42:08,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:42:08,727 INFO L225 Difference]: With dead ends: 3669 [2024-11-28 03:42:08,727 INFO L226 Difference]: Without dead ends: 3667 [2024-11-28 03:42:08,728 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=131, Invalid=625, Unknown=0, NotChecked=0, Total=756 [2024-11-28 03:42:08,729 INFO L435 NwaCegarLoop]: 264 mSDtfsCounter, 289 mSDsluCounter, 1786 mSDsCounter, 0 mSdLazyCounter, 1868 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 2050 SdHoareTripleChecker+Invalid, 1902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:42:08,729 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 2050 Invalid, 1902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1868 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-28 03:42:08,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3667 states. [2024-11-28 03:42:09,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3667 to 3648. [2024-11-28 03:42:09,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3648 states, 2889 states have (on average 1.2305295950155763) internal successors, (3555), 2923 states have internal predecessors, (3555), 626 states have call successors, (626), 132 states have call predecessors, (626), 132 states have return successors, (626), 592 states have call predecessors, (626), 626 states have call successors, (626) [2024-11-28 03:42:09,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 4807 transitions. [2024-11-28 03:42:09,179 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 4807 transitions. Word has length 271 [2024-11-28 03:42:09,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:09,179 INFO L471 AbstractCegarLoop]: Abstraction has 3648 states and 4807 transitions. [2024-11-28 03:42:09,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-28 03:42:09,180 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 4807 transitions. [2024-11-28 03:42:09,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-28 03:42:09,181 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:09,182 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:42:09,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-11-28 03:42:09,182 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:09,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:09,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1439123225, now seen corresponding path program 1 times [2024-11-28 03:42:09,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:09,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939272237] [2024-11-28 03:42:09,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:42:09,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:42:12,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-28 03:42:12,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:12,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939272237] [2024-11-28 03:42:12,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939272237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:42:12,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:42:12,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-28 03:42:12,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35046934] [2024-11-28 03:42:12,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:42:12,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:42:12,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:12,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:42:12,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:42:12,706 INFO L87 Difference]: Start difference. First operand 3648 states and 4807 transitions. Second operand has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:42:14,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:42:14,410 INFO L93 Difference]: Finished difference Result 4016 states and 5212 transitions. [2024-11-28 03:42:14,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:42:14,411 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 271 [2024-11-28 03:42:14,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:42:14,420 INFO L225 Difference]: With dead ends: 4016 [2024-11-28 03:42:14,420 INFO L226 Difference]: Without dead ends: 4014 [2024-11-28 03:42:14,422 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-11-28 03:42:14,422 INFO L435 NwaCegarLoop]: 240 mSDtfsCounter, 76 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2290 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:42:14,422 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2290 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 03:42:14,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4014 states. [2024-11-28 03:42:14,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4014 to 3640. [2024-11-28 03:42:14,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 2881 states have (on average 1.230822631030892) internal successors, (3546), 2915 states have internal predecessors, (3546), 626 states have call successors, (626), 132 states have call predecessors, (626), 132 states have return successors, (626), 592 states have call predecessors, (626), 626 states have call successors, (626) [2024-11-28 03:42:14,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 4798 transitions. [2024-11-28 03:42:14,866 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 4798 transitions. Word has length 271 [2024-11-28 03:42:14,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:14,867 INFO L471 AbstractCegarLoop]: Abstraction has 3640 states and 4798 transitions. [2024-11-28 03:42:14,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-28 03:42:14,867 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 4798 transitions. [2024-11-28 03:42:14,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-28 03:42:14,869 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:14,869 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:42:14,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-11-28 03:42:14,869 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:14,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:14,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1627934799, now seen corresponding path program 1 times [2024-11-28 03:42:14,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:14,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129413765] [2024-11-28 03:42:14,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:42:14,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:42:16,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 102 proven. 354 refuted. 0 times theorem prover too weak. 2988 trivial. 0 not checked. [2024-11-28 03:42:16,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:16,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129413765] [2024-11-28 03:42:16,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129413765] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:42:16,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226033339] [2024-11-28 03:42:16,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:42:16,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:16,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c3eabb-73dd-4b60-a6bf-3799a7bc0810/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:42:16,261 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c3eabb-73dd-4b60-a6bf-3799a7bc0810/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:42:16,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c3eabb-73dd-4b60-a6bf-3799a7bc0810/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:42:16,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:42:16,552 INFO L256 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-28 03:42:16,564 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:42:20,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1777 proven. 249 refuted. 0 times theorem prover too weak. 1418 trivial. 0 not checked. [2024-11-28 03:42:20,548 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:42:55,025 WARN L286 SmtUtils]: Spent 6.39s on a formula simplification. DAG size of input: 31 DAG size of output: 27 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-28 03:44:55,751 WARN L286 SmtUtils]: Spent 8.21s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)