./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.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_cc57c4e1-3c25-466c-b50c-e8426e44a3c1/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc57c4e1-3c25-466c-b50c-e8426e44a3c1/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc57c4e1-3c25-466c-b50c-e8426e44a3c1/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc57c4e1-3c25-466c-b50c-e8426e44a3c1/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc57c4e1-3c25-466c-b50c-e8426e44a3c1/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc57c4e1-3c25-466c-b50c-e8426e44a3c1/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6b77a3b8187af54765a505f7649175cf18add0380d30145d0f26a5ac8cc02bbd --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 14:44:07,150 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 14:44:07,208 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc57c4e1-3c25-466c-b50c-e8426e44a3c1/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 14:44:07,212 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 14:44:07,212 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 14:44:07,233 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 14:44:07,234 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 14:44:07,234 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 14:44:07,234 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 14:44:07,235 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 14:44:07,235 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 14:44:07,235 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 14:44:07,235 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 14:44:07,235 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 14:44:07,235 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 14:44:07,236 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 14:44:07,236 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 14:44:07,236 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 14:44:07,236 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 14:44:07,236 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 14:44:07,236 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 14:44:07,236 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 14:44:07,236 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 14:44:07,236 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 14:44:07,236 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 14:44:07,236 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 14:44:07,236 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 14:44:07,236 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 14:44:07,237 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 14:44:07,237 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:44:07,237 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:44:07,237 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:44:07,237 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:44:07,237 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 14:44:07,237 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:44:07,237 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:44:07,237 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:44:07,237 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:44:07,237 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 14:44:07,237 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 14:44:07,237 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 14:44:07,238 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 14:44:07,238 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 14:44:07,238 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 14:44:07,238 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 14:44:07,238 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 14:44:07,238 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 14:44:07,238 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 14:44:07,238 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_cc57c4e1-3c25-466c-b50c-e8426e44a3c1/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b77a3b8187af54765a505f7649175cf18add0380d30145d0f26a5ac8cc02bbd [2024-12-02 14:44:07,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 14:44:07,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 14:44:07,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 14:44:07,468 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 14:44:07,469 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 14:44:07,470 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc57c4e1-3c25-466c-b50c-e8426e44a3c1/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i [2024-12-02 14:44:10,099 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc57c4e1-3c25-466c-b50c-e8426e44a3c1/bin/uautomizer-verify-84ZbGMXZE1/data/fc387e638/1ce6c983bf9f483f840720ba9770c45d/FLAG726c9c5a6 [2024-12-02 14:44:10,319 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 14:44:10,320 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc57c4e1-3c25-466c-b50c-e8426e44a3c1/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i [2024-12-02 14:44:10,329 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc57c4e1-3c25-466c-b50c-e8426e44a3c1/bin/uautomizer-verify-84ZbGMXZE1/data/fc387e638/1ce6c983bf9f483f840720ba9770c45d/FLAG726c9c5a6 [2024-12-02 14:44:10,684 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc57c4e1-3c25-466c-b50c-e8426e44a3c1/bin/uautomizer-verify-84ZbGMXZE1/data/fc387e638/1ce6c983bf9f483f840720ba9770c45d [2024-12-02 14:44:10,686 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 14:44:10,687 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 14:44:10,688 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 14:44:10,688 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 14:44:10,691 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 14:44:10,692 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:44:10" (1/1) ... [2024-12-02 14:44:10,693 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cc43e14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:10, skipping insertion in model container [2024-12-02 14:44:10,693 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:44:10" (1/1) ... [2024-12-02 14:44:10,711 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 14:44:10,833 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_cc57c4e1-3c25-466c-b50c-e8426e44a3c1/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i[919,932] [2024-12-02 14:44:10,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:44:10,919 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 14:44:10,930 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_cc57c4e1-3c25-466c-b50c-e8426e44a3c1/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i[919,932] [2024-12-02 14:44:10,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:44:10,981 INFO L204 MainTranslator]: Completed translation [2024-12-02 14:44:10,981 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:10 WrapperNode [2024-12-02 14:44:10,981 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 14:44:10,982 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 14:44:10,982 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 14:44:10,983 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 14:44:10,989 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:10" (1/1) ... [2024-12-02 14:44:11,001 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:10" (1/1) ... [2024-12-02 14:44:11,043 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 249 [2024-12-02 14:44:11,044 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 14:44:11,044 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 14:44:11,044 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 14:44:11,045 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 14:44:11,055 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:10" (1/1) ... [2024-12-02 14:44:11,055 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:10" (1/1) ... [2024-12-02 14:44:11,059 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:10" (1/1) ... [2024-12-02 14:44:11,078 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 14:44:11,078 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:10" (1/1) ... [2024-12-02 14:44:11,079 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:10" (1/1) ... [2024-12-02 14:44:11,091 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:10" (1/1) ... [2024-12-02 14:44:11,092 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:10" (1/1) ... [2024-12-02 14:44:11,097 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:10" (1/1) ... [2024-12-02 14:44:11,100 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:10" (1/1) ... [2024-12-02 14:44:11,102 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:10" (1/1) ... [2024-12-02 14:44:11,107 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 14:44:11,108 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 14:44:11,108 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 14:44:11,108 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 14:44:11,109 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:10" (1/1) ... [2024-12-02 14:44:11,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:44:11,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc57c4e1-3c25-466c-b50c-e8426e44a3c1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:44:11,141 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc57c4e1-3c25-466c-b50c-e8426e44a3c1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 14:44:11,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc57c4e1-3c25-466c-b50c-e8426e44a3c1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 14:44:11,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 14:44:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 14:44:11,171 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 14:44:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 14:44:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 14:44:11,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 14:44:11,254 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 14:44:11,256 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 14:44:11,649 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-12-02 14:44:11,649 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 14:44:11,658 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 14:44:11,658 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 14:44:11,658 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:44:11 BoogieIcfgContainer [2024-12-02 14:44:11,659 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 14:44:11,661 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 14:44:11,661 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 14:44:11,665 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 14:44:11,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:44:10" (1/3) ... [2024-12-02 14:44:11,666 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ced8969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:44:11, skipping insertion in model container [2024-12-02 14:44:11,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:44:10" (2/3) ... [2024-12-02 14:44:11,666 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ced8969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:44:11, skipping insertion in model container [2024-12-02 14:44:11,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:44:11" (3/3) ... [2024-12-02 14:44:11,667 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i [2024-12-02 14:44:11,688 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 14:44:11,690 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i that has 2 procedures, 106 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 14:44:11,742 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 14:44:11,753 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;@501ab380, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 14:44:11,753 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 14:44:11,757 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 72 states have (on average 1.4722222222222223) internal successors, (106), 73 states have internal predecessors, (106), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-12-02 14:44:11,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-12-02 14:44:11,768 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:44:11,769 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:44:11,769 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:44:11,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:44:11,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1976063530, now seen corresponding path program 1 times [2024-12-02 14:44:11,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:44:11,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709659298] [2024-12-02 14:44:11,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:44:11,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:44:11,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:44:12,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2024-12-02 14:44:12,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:44:12,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709659298] [2024-12-02 14:44:12,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709659298] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:44:12,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779167046] [2024-12-02 14:44:12,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:44:12,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:44:12,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc57c4e1-3c25-466c-b50c-e8426e44a3c1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:44:12,085 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc57c4e1-3c25-466c-b50c-e8426e44a3c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:44:12,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc57c4e1-3c25-466c-b50c-e8426e44a3c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 14:44:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:44:12,255 INFO L256 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 14:44:12,262 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:44:12,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2024-12-02 14:44:12,290 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:44:12,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779167046] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:44:12,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:44:12,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 14:44:12,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261416094] [2024-12-02 14:44:12,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:44:12,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 14:44:12,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:44:12,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 14:44:12,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 14:44:12,317 INFO L87 Difference]: Start difference. First operand has 106 states, 72 states have (on average 1.4722222222222223) internal successors, (106), 73 states have internal predecessors, (106), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-12-02 14:44:12,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:44:12,341 INFO L93 Difference]: Finished difference Result 205 states and 361 transitions. [2024-12-02 14:44:12,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 14:44:12,343 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) Word has length 202 [2024-12-02 14:44:12,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:44:12,348 INFO L225 Difference]: With dead ends: 205 [2024-12-02 14:44:12,348 INFO L226 Difference]: Without dead ends: 102 [2024-12-02 14:44:12,352 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 14:44:12,354 INFO L435 NwaCegarLoop]: 161 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, 161 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:44:12,355 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:44:12,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-12-02 14:44:12,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-12-02 14:44:12,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 69 states have (on average 1.434782608695652) internal successors, (99), 69 states have internal predecessors, (99), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-12-02 14:44:12,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 161 transitions. [2024-12-02 14:44:12,390 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 161 transitions. Word has length 202 [2024-12-02 14:44:12,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:44:12,391 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 161 transitions. [2024-12-02 14:44:12,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-12-02 14:44:12,391 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 161 transitions. [2024-12-02 14:44:12,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-12-02 14:44:12,395 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:44:12,395 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:44:12,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc57c4e1-3c25-466c-b50c-e8426e44a3c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 14:44:12,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc57c4e1-3c25-466c-b50c-e8426e44a3c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:44:12,596 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:44:12,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:44:12,596 INFO L85 PathProgramCache]: Analyzing trace with hash 616888652, now seen corresponding path program 1 times [2024-12-02 14:44:12,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:44:12,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639107791] [2024-12-02 14:44:12,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:44:12,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:44:12,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:44:12,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:44:12,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:44:12,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639107791] [2024-12-02 14:44:12,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639107791] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:44:12,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:44:12,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:44:12,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850027325] [2024-12-02 14:44:12,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:44:12,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:44:12,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:44:12,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:44:12,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:44:12,877 INFO L87 Difference]: Start difference. First operand 102 states and 161 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:44:13,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:44:13,009 INFO L93 Difference]: Finished difference Result 300 states and 470 transitions. [2024-12-02 14:44:13,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:44:13,010 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 202 [2024-12-02 14:44:13,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:44:13,012 INFO L225 Difference]: With dead ends: 300 [2024-12-02 14:44:13,012 INFO L226 Difference]: Without dead ends: 201 [2024-12-02 14:44:13,013 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:44:13,014 INFO L435 NwaCegarLoop]: 226 mSDtfsCounter, 148 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:44:13,014 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 427 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:44:13,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-12-02 14:44:13,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 195. [2024-12-02 14:44:13,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 150 states have (on average 1.4666666666666666) internal successors, (220), 152 states have internal predecessors, (220), 41 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (41), 39 states have call predecessors, (41), 41 states have call successors, (41) [2024-12-02 14:44:13,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 302 transitions. [2024-12-02 14:44:13,039 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 302 transitions. Word has length 202 [2024-12-02 14:44:13,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:44:13,040 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 302 transitions. [2024-12-02 14:44:13,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:44:13,040 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 302 transitions. [2024-12-02 14:44:13,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-12-02 14:44:13,043 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:44:13,044 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:44:13,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 14:44:13,044 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:44:13,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:44:13,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1072055090, now seen corresponding path program 1 times [2024-12-02 14:44:13,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:44:13,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168786500] [2024-12-02 14:44:13,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:44:13,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:44:13,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:44:13,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:44:13,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:44:13,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168786500] [2024-12-02 14:44:13,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168786500] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:44:13,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:44:13,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:44:13,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053014511] [2024-12-02 14:44:13,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:44:13,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:44:13,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:44:13,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:44:13,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:44:13,433 INFO L87 Difference]: Start difference. First operand 195 states and 302 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:44:13,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:44:13,551 INFO L93 Difference]: Finished difference Result 462 states and 712 transitions. [2024-12-02 14:44:13,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:44:13,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 202 [2024-12-02 14:44:13,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:44:13,556 INFO L225 Difference]: With dead ends: 462 [2024-12-02 14:44:13,556 INFO L226 Difference]: Without dead ends: 270 [2024-12-02 14:44:13,557 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:44:13,558 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 74 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:44:13,558 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 450 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:44:13,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2024-12-02 14:44:13,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 245. [2024-12-02 14:44:13,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 195 states have (on average 1.471794871794872) internal successors, (287), 198 states have internal predecessors, (287), 45 states have call successors, (45), 4 states have call predecessors, (45), 4 states have return successors, (45), 42 states have call predecessors, (45), 45 states have call successors, (45) [2024-12-02 14:44:13,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 377 transitions. [2024-12-02 14:44:13,583 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 377 transitions. Word has length 202 [2024-12-02 14:44:13,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:44:13,584 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 377 transitions. [2024-12-02 14:44:13,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:44:13,585 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 377 transitions. [2024-12-02 14:44:13,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-12-02 14:44:13,587 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:44:13,587 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:44:13,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 14:44:13,588 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:44:13,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:44:13,588 INFO L85 PathProgramCache]: Analyzing trace with hash -200759798, now seen corresponding path program 1 times [2024-12-02 14:44:13,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:44:13,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141987271] [2024-12-02 14:44:13,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:44:13,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:44:13,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:44:15,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:44:15,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:44:15,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141987271] [2024-12-02 14:44:15,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141987271] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:44:15,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:44:15,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 14:44:15,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057787213] [2024-12-02 14:44:15,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:44:15,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 14:44:15,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:44:15,791 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 14:44:15,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:44:15,792 INFO L87 Difference]: Start difference. First operand 245 states and 377 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-12-02 14:44:16,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:44:16,903 INFO L93 Difference]: Finished difference Result 1301 states and 1990 transitions. [2024-12-02 14:44:16,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 14:44:16,904 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) Word has length 202 [2024-12-02 14:44:16,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:44:16,911 INFO L225 Difference]: With dead ends: 1301 [2024-12-02 14:44:16,911 INFO L226 Difference]: Without dead ends: 1059 [2024-12-02 14:44:16,912 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2024-12-02 14:44:16,913 INFO L435 NwaCegarLoop]: 169 mSDtfsCounter, 988 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 988 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 14:44:16,913 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [988 Valid, 929 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 14:44:16,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2024-12-02 14:44:16,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 576. [2024-12-02 14:44:16,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 466 states have (on average 1.497854077253219) internal successors, (698), 473 states have internal predecessors, (698), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 93 states have call predecessors, (100), 100 states have call successors, (100) [2024-12-02 14:44:16,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 898 transitions. [2024-12-02 14:44:16,974 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 898 transitions. Word has length 202 [2024-12-02 14:44:16,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:44:16,974 INFO L471 AbstractCegarLoop]: Abstraction has 576 states and 898 transitions. [2024-12-02 14:44:16,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-12-02 14:44:16,975 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 898 transitions. [2024-12-02 14:44:16,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-12-02 14:44:16,978 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:44:16,978 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:44:16,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 14:44:16,978 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:44:16,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:44:16,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1604678536, now seen corresponding path program 1 times [2024-12-02 14:44:16,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:44:16,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981946548] [2024-12-02 14:44:16,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:44:16,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:44:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:44:34,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:44:34,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:44:34,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981946548] [2024-12-02 14:44:34,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981946548] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:44:34,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:44:34,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 14:44:34,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485809644] [2024-12-02 14:44:34,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:44:34,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 14:44:34,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:44:34,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 14:44:34,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-12-02 14:44:34,496 INFO L87 Difference]: Start difference. First operand 576 states and 898 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-12-02 14:44:39,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:44:39,797 INFO L93 Difference]: Finished difference Result 1589 states and 2413 transitions. [2024-12-02 14:44:39,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 14:44:39,798 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) Word has length 202 [2024-12-02 14:44:39,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:44:39,803 INFO L225 Difference]: With dead ends: 1589 [2024-12-02 14:44:39,803 INFO L226 Difference]: Without dead ends: 1251 [2024-12-02 14:44:39,804 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=185, Invalid=517, Unknown=0, NotChecked=0, Total=702 [2024-12-02 14:44:39,805 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 771 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-12-02 14:44:39,805 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 961 Invalid, 1183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-12-02 14:44:39,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2024-12-02 14:44:39,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 624. [2024-12-02 14:44:39,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 514 states have (on average 1.5038910505836576) internal successors, (773), 521 states have internal predecessors, (773), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 93 states have call predecessors, (100), 100 states have call successors, (100) [2024-12-02 14:44:39,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 973 transitions. [2024-12-02 14:44:39,850 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 973 transitions. Word has length 202 [2024-12-02 14:44:39,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:44:39,850 INFO L471 AbstractCegarLoop]: Abstraction has 624 states and 973 transitions. [2024-12-02 14:44:39,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-12-02 14:44:39,851 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 973 transitions. [2024-12-02 14:44:39,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-12-02 14:44:39,852 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:44:39,853 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:44:39,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 14:44:39,853 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:44:39,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:44:39,853 INFO L85 PathProgramCache]: Analyzing trace with hash 2027380362, now seen corresponding path program 1 times [2024-12-02 14:44:39,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:44:39,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134864081] [2024-12-02 14:44:39,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:44:39,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:44:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:44:40,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:44:40,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:44:40,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134864081] [2024-12-02 14:44:40,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134864081] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:44:40,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:44:40,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 14:44:40,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224829911] [2024-12-02 14:44:40,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:44:40,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 14:44:40,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:44:40,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 14:44:40,773 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:44:40,773 INFO L87 Difference]: Start difference. First operand 624 states and 973 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:44:41,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:44:41,885 INFO L93 Difference]: Finished difference Result 1611 states and 2503 transitions. [2024-12-02 14:44:41,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:44:41,885 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 202 [2024-12-02 14:44:41,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:44:41,891 INFO L225 Difference]: With dead ends: 1611 [2024-12-02 14:44:41,891 INFO L226 Difference]: Without dead ends: 1273 [2024-12-02 14:44:41,892 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2024-12-02 14:44:41,893 INFO L435 NwaCegarLoop]: 196 mSDtfsCounter, 325 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 14:44:41,893 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 990 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 14:44:41,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2024-12-02 14:44:41,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 641. [2024-12-02 14:44:41,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 531 states have (on average 1.5065913370998116) internal successors, (800), 538 states have internal predecessors, (800), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 93 states have call predecessors, (100), 100 states have call successors, (100) [2024-12-02 14:44:41,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1000 transitions. [2024-12-02 14:44:41,939 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1000 transitions. Word has length 202 [2024-12-02 14:44:41,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:44:41,940 INFO L471 AbstractCegarLoop]: Abstraction has 641 states and 1000 transitions. [2024-12-02 14:44:41,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:44:41,940 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1000 transitions. [2024-12-02 14:44:41,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-12-02 14:44:41,943 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:44:41,943 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:44:41,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 14:44:41,943 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:44:41,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:44:41,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1210127375, now seen corresponding path program 1 times [2024-12-02 14:44:41,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:44:41,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120209600] [2024-12-02 14:44:41,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:44:41,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:44:41,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:44:42,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:44:42,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:44:42,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120209600] [2024-12-02 14:44:42,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120209600] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:44:42,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:44:42,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 14:44:42,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133246943] [2024-12-02 14:44:42,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:44:42,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 14:44:42,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:44:42,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 14:44:42,569 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:44:42,569 INFO L87 Difference]: Start difference. First operand 641 states and 1000 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:44:43,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:44:43,329 INFO L93 Difference]: Finished difference Result 2186 states and 3385 transitions. [2024-12-02 14:44:43,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 14:44:43,329 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 203 [2024-12-02 14:44:43,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:44:43,335 INFO L225 Difference]: With dead ends: 2186 [2024-12-02 14:44:43,335 INFO L226 Difference]: Without dead ends: 1788 [2024-12-02 14:44:43,336 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2024-12-02 14:44:43,337 INFO L435 NwaCegarLoop]: 158 mSDtfsCounter, 739 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:44:43,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 1116 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 14:44:43,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1788 states. [2024-12-02 14:44:43,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1788 to 711. [2024-12-02 14:44:43,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 601 states have (on average 1.5108153078202995) internal successors, (908), 608 states have internal predecessors, (908), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 93 states have call predecessors, (100), 100 states have call successors, (100) [2024-12-02 14:44:43,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1108 transitions. [2024-12-02 14:44:43,379 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1108 transitions. Word has length 203 [2024-12-02 14:44:43,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:44:43,379 INFO L471 AbstractCegarLoop]: Abstraction has 711 states and 1108 transitions. [2024-12-02 14:44:43,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:44:43,379 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1108 transitions. [2024-12-02 14:44:43,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-12-02 14:44:43,382 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:44:43,382 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:44:43,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 14:44:43,382 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:44:43,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:44:43,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1344140881, now seen corresponding path program 1 times [2024-12-02 14:44:43,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:44:43,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973934192] [2024-12-02 14:44:43,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:44:43,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:44:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:44:52,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:44:52,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:44:52,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973934192] [2024-12-02 14:44:52,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973934192] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:44:52,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:44:52,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 14:44:52,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832530239] [2024-12-02 14:44:52,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:44:52,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 14:44:52,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:44:52,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 14:44:52,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-12-02 14:44:52,080 INFO L87 Difference]: Start difference. First operand 711 states and 1108 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:44:55,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:44:55,460 INFO L93 Difference]: Finished difference Result 1741 states and 2654 transitions. [2024-12-02 14:44:55,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 14:44:55,461 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 203 [2024-12-02 14:44:55,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:44:55,464 INFO L225 Difference]: With dead ends: 1741 [2024-12-02 14:44:55,464 INFO L226 Difference]: Without dead ends: 1370 [2024-12-02 14:44:55,465 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2024-12-02 14:44:55,465 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 1135 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:44:55,466 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 907 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-12-02 14:44:55,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2024-12-02 14:44:55,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 743. [2024-12-02 14:44:55,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 633 states have (on average 1.5086887835703002) internal successors, (955), 640 states have internal predecessors, (955), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 93 states have call predecessors, (100), 100 states have call successors, (100) [2024-12-02 14:44:55,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1155 transitions. [2024-12-02 14:44:55,507 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1155 transitions. Word has length 203 [2024-12-02 14:44:55,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:44:55,507 INFO L471 AbstractCegarLoop]: Abstraction has 743 states and 1155 transitions. [2024-12-02 14:44:55,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:44:55,507 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1155 transitions. [2024-12-02 14:44:55,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-12-02 14:44:55,509 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:44:55,509 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:44:55,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 14:44:55,509 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:44:55,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:44:55,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1562995599, now seen corresponding path program 1 times [2024-12-02 14:44:55,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:44:55,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491946064] [2024-12-02 14:44:55,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:44:55,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:44:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:44:56,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:44:56,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:44:56,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491946064] [2024-12-02 14:44:56,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491946064] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:44:56,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:44:56,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 14:44:56,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194109576] [2024-12-02 14:44:56,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:44:56,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 14:44:56,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:44:56,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 14:44:56,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:44:56,344 INFO L87 Difference]: Start difference. First operand 743 states and 1155 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:44:57,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:44:57,095 INFO L93 Difference]: Finished difference Result 1839 states and 2819 transitions. [2024-12-02 14:44:57,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 14:44:57,095 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 203 [2024-12-02 14:44:57,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:44:57,100 INFO L225 Difference]: With dead ends: 1839 [2024-12-02 14:44:57,100 INFO L226 Difference]: Without dead ends: 1444 [2024-12-02 14:44:57,101 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2024-12-02 14:44:57,101 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 392 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:44:57,102 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 1340 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 14:44:57,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2024-12-02 14:44:57,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 714. [2024-12-02 14:44:57,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 604 states have (on average 1.5016556291390728) internal successors, (907), 611 states have internal predecessors, (907), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 93 states have call predecessors, (100), 100 states have call successors, (100) [2024-12-02 14:44:57,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 1107 transitions. [2024-12-02 14:44:57,152 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 1107 transitions. Word has length 203 [2024-12-02 14:44:57,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:44:57,152 INFO L471 AbstractCegarLoop]: Abstraction has 714 states and 1107 transitions. [2024-12-02 14:44:57,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:44:57,152 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 1107 transitions. [2024-12-02 14:44:57,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-12-02 14:44:57,154 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:44:57,154 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:44:57,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 14:44:57,154 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:44:57,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:44:57,155 INFO L85 PathProgramCache]: Analyzing trace with hash -47899499, now seen corresponding path program 1 times [2024-12-02 14:44:57,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:44:57,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435475812] [2024-12-02 14:44:57,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:44:57,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:44:57,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:04,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:45:04,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:04,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435475812] [2024-12-02 14:45:04,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435475812] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:04,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:04,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 14:45:04,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976105531] [2024-12-02 14:45:04,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:04,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 14:45:04,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:04,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 14:45:04,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-12-02 14:45:04,389 INFO L87 Difference]: Start difference. First operand 714 states and 1107 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-12-02 14:45:08,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:08,008 INFO L93 Difference]: Finished difference Result 2265 states and 3502 transitions. [2024-12-02 14:45:08,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 14:45:08,009 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) Word has length 203 [2024-12-02 14:45:08,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:08,013 INFO L225 Difference]: With dead ends: 2265 [2024-12-02 14:45:08,013 INFO L226 Difference]: Without dead ends: 1857 [2024-12-02 14:45:08,015 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2024-12-02 14:45:08,015 INFO L435 NwaCegarLoop]: 166 mSDtfsCounter, 749 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:08,015 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 1107 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 14:45:08,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2024-12-02 14:45:08,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 803. [2024-12-02 14:45:08,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 693 states have (on average 1.5194805194805194) internal successors, (1053), 700 states have internal predecessors, (1053), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 93 states have call predecessors, (100), 100 states have call successors, (100) [2024-12-02 14:45:08,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1253 transitions. [2024-12-02 14:45:08,063 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1253 transitions. Word has length 203 [2024-12-02 14:45:08,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:08,064 INFO L471 AbstractCegarLoop]: Abstraction has 803 states and 1253 transitions. [2024-12-02 14:45:08,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-12-02 14:45:08,064 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1253 transitions. [2024-12-02 14:45:08,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-12-02 14:45:08,066 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:08,066 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:08,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 14:45:08,066 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:08,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:08,067 INFO L85 PathProgramCache]: Analyzing trace with hash 823395793, now seen corresponding path program 1 times [2024-12-02 14:45:08,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:08,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076301075] [2024-12-02 14:45:08,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:08,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:24,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:45:24,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:24,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076301075] [2024-12-02 14:45:24,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076301075] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:24,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:24,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 14:45:24,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108471132] [2024-12-02 14:45:24,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:24,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 14:45:24,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:24,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 14:45:24,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-12-02 14:45:24,204 INFO L87 Difference]: Start difference. First operand 803 states and 1253 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:45:37,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:37,925 INFO L93 Difference]: Finished difference Result 2562 states and 3882 transitions. [2024-12-02 14:45:37,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-12-02 14:45:37,926 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 203 [2024-12-02 14:45:37,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:37,930 INFO L225 Difference]: With dead ends: 2562 [2024-12-02 14:45:37,930 INFO L226 Difference]: Without dead ends: 2191 [2024-12-02 14:45:37,931 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=358, Invalid=1202, Unknown=0, NotChecked=0, Total=1560 [2024-12-02 14:45:37,932 INFO L435 NwaCegarLoop]: 195 mSDtfsCounter, 1055 mSDsluCounter, 1355 mSDsCounter, 0 mSdLazyCounter, 2041 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1055 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 2139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:37,932 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1055 Valid, 1550 Invalid, 2139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2041 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-12-02 14:45:37,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2191 states. [2024-12-02 14:45:37,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2191 to 823. [2024-12-02 14:45:37,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 713 states have (on average 1.5189340813464236) internal successors, (1083), 720 states have internal predecessors, (1083), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 93 states have call predecessors, (100), 100 states have call successors, (100) [2024-12-02 14:45:37,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1283 transitions. [2024-12-02 14:45:37,984 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1283 transitions. Word has length 203 [2024-12-02 14:45:37,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:37,984 INFO L471 AbstractCegarLoop]: Abstraction has 823 states and 1283 transitions. [2024-12-02 14:45:37,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:45:37,985 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1283 transitions. [2024-12-02 14:45:37,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-12-02 14:45:37,986 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:37,986 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:37,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 14:45:37,986 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:37,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:37,987 INFO L85 PathProgramCache]: Analyzing trace with hash -865547949, now seen corresponding path program 1 times [2024-12-02 14:45:37,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:37,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989251083] [2024-12-02 14:45:37,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:37,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:38,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:45,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:45:45,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:45,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989251083] [2024-12-02 14:45:45,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989251083] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:45,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:45,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 14:45:45,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610670019] [2024-12-02 14:45:45,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:45,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 14:45:45,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:45,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 14:45:45,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-12-02 14:45:45,712 INFO L87 Difference]: Start difference. First operand 823 states and 1283 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:45:48,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:48,472 INFO L93 Difference]: Finished difference Result 2284 states and 3536 transitions. [2024-12-02 14:45:48,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 14:45:48,473 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 203 [2024-12-02 14:45:48,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:48,478 INFO L225 Difference]: With dead ends: 2284 [2024-12-02 14:45:48,478 INFO L226 Difference]: Without dead ends: 1845 [2024-12-02 14:45:48,479 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2024-12-02 14:45:48,479 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 713 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:48,479 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 914 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 14:45:48,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1845 states. [2024-12-02 14:45:48,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1845 to 919. [2024-12-02 14:45:48,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 809 states have (on average 1.530284301606922) internal successors, (1238), 816 states have internal predecessors, (1238), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 93 states have call predecessors, (100), 100 states have call successors, (100) [2024-12-02 14:45:48,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1438 transitions. [2024-12-02 14:45:48,530 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1438 transitions. Word has length 203 [2024-12-02 14:45:48,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:48,531 INFO L471 AbstractCegarLoop]: Abstraction has 919 states and 1438 transitions. [2024-12-02 14:45:48,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:45:48,531 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1438 transitions. [2024-12-02 14:45:48,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-12-02 14:45:48,532 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:48,532 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:48,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 14:45:48,533 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:48,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:48,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1987351339, now seen corresponding path program 1 times [2024-12-02 14:45:48,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:48,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498682932] [2024-12-02 14:45:48,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:48,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:48,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:46:00,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:46:00,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:46:00,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498682932] [2024-12-02 14:46:00,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498682932] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:46:00,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:46:00,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 14:46:00,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157419394] [2024-12-02 14:46:00,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:46:00,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 14:46:00,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:46:00,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 14:46:00,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-12-02 14:46:00,342 INFO L87 Difference]: Start difference. First operand 919 states and 1438 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:46:03,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:46:03,501 INFO L93 Difference]: Finished difference Result 2343 states and 3612 transitions. [2024-12-02 14:46:03,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 14:46:03,502 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 203 [2024-12-02 14:46:03,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:46:03,506 INFO L225 Difference]: With dead ends: 2343 [2024-12-02 14:46:03,506 INFO L226 Difference]: Without dead ends: 1972 [2024-12-02 14:46:03,507 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2024-12-02 14:46:03,507 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 845 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-12-02 14:46:03,507 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 1082 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-12-02 14:46:03,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2024-12-02 14:46:03,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 932. [2024-12-02 14:46:03,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 822 states have (on average 1.5316301703163018) internal successors, (1259), 829 states have internal predecessors, (1259), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 93 states have call predecessors, (100), 100 states have call successors, (100) [2024-12-02 14:46:03,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1459 transitions. [2024-12-02 14:46:03,561 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1459 transitions. Word has length 203 [2024-12-02 14:46:03,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:46:03,561 INFO L471 AbstractCegarLoop]: Abstraction has 932 states and 1459 transitions. [2024-12-02 14:46:03,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:46:03,561 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1459 transitions. [2024-12-02 14:46:03,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-12-02 14:46:03,563 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:46:03,563 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:46:03,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 14:46:03,563 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:46:03,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:46:03,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1116056047, now seen corresponding path program 1 times [2024-12-02 14:46:03,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:46:03,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494392716] [2024-12-02 14:46:03,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:46:03,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:46:03,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:46:03,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:46:03,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:46:03,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494392716] [2024-12-02 14:46:03,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494392716] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:46:03,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:46:03,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:46:03,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432286375] [2024-12-02 14:46:03,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:46:03,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:46:03,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:46:03,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:46:03,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:46:03,702 INFO L87 Difference]: Start difference. First operand 932 states and 1459 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:46:03,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:46:03,821 INFO L93 Difference]: Finished difference Result 1598 states and 2465 transitions. [2024-12-02 14:46:03,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:46:03,821 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 203 [2024-12-02 14:46:03,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:46:03,824 INFO L225 Difference]: With dead ends: 1598 [2024-12-02 14:46:03,825 INFO L226 Difference]: Without dead ends: 1147 [2024-12-02 14:46:03,825 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:46:03,826 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 122 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:46:03,826 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 485 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:46:03,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2024-12-02 14:46:03,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 740. [2024-12-02 14:46:03,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 645 states have (on average 1.4976744186046511) internal successors, (966), 648 states have internal predecessors, (966), 84 states have call successors, (84), 10 states have call predecessors, (84), 10 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2024-12-02 14:46:03,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1134 transitions. [2024-12-02 14:46:03,869 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1134 transitions. Word has length 203 [2024-12-02 14:46:03,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:46:03,869 INFO L471 AbstractCegarLoop]: Abstraction has 740 states and 1134 transitions. [2024-12-02 14:46:03,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:46:03,869 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1134 transitions. [2024-12-02 14:46:03,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-12-02 14:46:03,871 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:46:03,872 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:46:03,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 14:46:03,872 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:46:03,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:46:03,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1489967507, now seen corresponding path program 1 times [2024-12-02 14:46:03,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:46:03,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050829298] [2024-12-02 14:46:03,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:46:03,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:46:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:46:13,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:46:13,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:46:13,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050829298] [2024-12-02 14:46:13,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050829298] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:46:13,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:46:13,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 14:46:13,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356837877] [2024-12-02 14:46:13,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:46:13,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 14:46:13,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:46:13,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 14:46:13,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2024-12-02 14:46:13,574 INFO L87 Difference]: Start difference. First operand 740 states and 1134 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:46:14,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:46:14,521 INFO L93 Difference]: Finished difference Result 1393 states and 2109 transitions. [2024-12-02 14:46:14,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 14:46:14,521 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 203 [2024-12-02 14:46:14,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:46:14,524 INFO L225 Difference]: With dead ends: 1393 [2024-12-02 14:46:14,524 INFO L226 Difference]: Without dead ends: 1084 [2024-12-02 14:46:14,525 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2024-12-02 14:46:14,525 INFO L435 NwaCegarLoop]: 182 mSDtfsCounter, 335 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 14:46:14,525 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 611 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 14:46:14,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2024-12-02 14:46:14,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 744. [2024-12-02 14:46:14,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 649 states have (on average 1.49768875192604) internal successors, (972), 652 states have internal predecessors, (972), 84 states have call successors, (84), 10 states have call predecessors, (84), 10 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2024-12-02 14:46:14,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1140 transitions. [2024-12-02 14:46:14,568 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1140 transitions. Word has length 203 [2024-12-02 14:46:14,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:46:14,568 INFO L471 AbstractCegarLoop]: Abstraction has 744 states and 1140 transitions. [2024-12-02 14:46:14,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:46:14,568 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1140 transitions. [2024-12-02 14:46:14,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-12-02 14:46:14,570 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:46:14,570 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:46:14,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 14:46:14,570 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:46:14,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:46:14,570 INFO L85 PathProgramCache]: Analyzing trace with hash -2102961039, now seen corresponding path program 1 times [2024-12-02 14:46:14,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:46:14,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730853038] [2024-12-02 14:46:14,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:46:14,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:46:14,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:46:28,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:46:28,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:46:28,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730853038] [2024-12-02 14:46:28,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730853038] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:46:28,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:46:28,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 14:46:28,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484315311] [2024-12-02 14:46:28,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:46:28,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 14:46:28,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:46:28,901 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 14:46:28,901 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-12-02 14:46:28,901 INFO L87 Difference]: Start difference. First operand 744 states and 1140 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:46:34,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:46:34,617 INFO L93 Difference]: Finished difference Result 1713 states and 2593 transitions. [2024-12-02 14:46:34,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 14:46:34,618 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 204 [2024-12-02 14:46:34,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:46:34,621 INFO L225 Difference]: With dead ends: 1713 [2024-12-02 14:46:34,621 INFO L226 Difference]: Without dead ends: 1357 [2024-12-02 14:46:34,621 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2024-12-02 14:46:34,622 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 713 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:46:34,622 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 819 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-12-02 14:46:34,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2024-12-02 14:46:34,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 839. [2024-12-02 14:46:34,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 744 states have (on average 1.5040322580645162) internal successors, (1119), 747 states have internal predecessors, (1119), 84 states have call successors, (84), 10 states have call predecessors, (84), 10 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2024-12-02 14:46:34,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1287 transitions. [2024-12-02 14:46:34,705 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1287 transitions. Word has length 204 [2024-12-02 14:46:34,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:46:34,705 INFO L471 AbstractCegarLoop]: Abstraction has 839 states and 1287 transitions. [2024-12-02 14:46:34,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:46:34,706 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1287 transitions. [2024-12-02 14:46:34,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-12-02 14:46:34,707 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:46:34,707 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:46:34,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 14:46:34,708 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:46:34,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:46:34,708 INFO L85 PathProgramCache]: Analyzing trace with hash 386567923, now seen corresponding path program 1 times [2024-12-02 14:46:34,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:46:34,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499905508] [2024-12-02 14:46:34,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:46:34,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:46:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:46:35,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:46:35,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:46:35,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499905508] [2024-12-02 14:46:35,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499905508] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:46:35,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:46:35,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:46:35,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135129973] [2024-12-02 14:46:35,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:46:35,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:46:35,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:46:35,090 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:46:35,090 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:46:35,091 INFO L87 Difference]: Start difference. First operand 839 states and 1287 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:46:35,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:46:35,466 INFO L93 Difference]: Finished difference Result 1550 states and 2372 transitions. [2024-12-02 14:46:35,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 14:46:35,467 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 204 [2024-12-02 14:46:35,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:46:35,470 INFO L225 Difference]: With dead ends: 1550 [2024-12-02 14:46:35,470 INFO L226 Difference]: Without dead ends: 1003 [2024-12-02 14:46:35,470 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:46:35,470 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 173 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:46:35,471 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 610 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 14:46:35,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2024-12-02 14:46:35,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 819. [2024-12-02 14:46:35,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 724 states have (on average 1.4958563535911602) internal successors, (1083), 727 states have internal predecessors, (1083), 84 states have call successors, (84), 10 states have call predecessors, (84), 10 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2024-12-02 14:46:35,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1251 transitions. [2024-12-02 14:46:35,512 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1251 transitions. Word has length 204 [2024-12-02 14:46:35,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:46:35,513 INFO L471 AbstractCegarLoop]: Abstraction has 819 states and 1251 transitions. [2024-12-02 14:46:35,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:46:35,513 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1251 transitions. [2024-12-02 14:46:35,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-12-02 14:46:35,514 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:46:35,514 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:46:35,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 14:46:35,514 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:46:35,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:46:35,515 INFO L85 PathProgramCache]: Analyzing trace with hash 2051457647, now seen corresponding path program 1 times [2024-12-02 14:46:35,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:46:35,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869781018] [2024-12-02 14:46:35,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:46:35,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:46:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:46:42,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:46:42,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:46:42,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869781018] [2024-12-02 14:46:42,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869781018] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:46:42,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:46:42,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 14:46:42,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644712667] [2024-12-02 14:46:42,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:46:42,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 14:46:42,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:46:42,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 14:46:42,770 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:46:42,770 INFO L87 Difference]: Start difference. First operand 819 states and 1251 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:46:45,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:46:45,165 INFO L93 Difference]: Finished difference Result 1432 states and 2160 transitions. [2024-12-02 14:46:45,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 14:46:45,166 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 204 [2024-12-02 14:46:45,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:46:45,169 INFO L225 Difference]: With dead ends: 1432 [2024-12-02 14:46:45,169 INFO L226 Difference]: Without dead ends: 1076 [2024-12-02 14:46:45,169 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-12-02 14:46:45,170 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 323 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:46:45,170 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 626 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 14:46:45,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2024-12-02 14:46:45,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 882. [2024-12-02 14:46:45,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 787 states have (on average 1.5006353240152477) internal successors, (1181), 790 states have internal predecessors, (1181), 84 states have call successors, (84), 10 states have call predecessors, (84), 10 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2024-12-02 14:46:45,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1349 transitions. [2024-12-02 14:46:45,213 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1349 transitions. Word has length 204 [2024-12-02 14:46:45,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:46:45,213 INFO L471 AbstractCegarLoop]: Abstraction has 882 states and 1349 transitions. [2024-12-02 14:46:45,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:46:45,214 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1349 transitions. [2024-12-02 14:46:45,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-12-02 14:46:45,214 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:46:45,215 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:46:45,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 14:46:45,215 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:46:45,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:46:45,215 INFO L85 PathProgramCache]: Analyzing trace with hash -631334589, now seen corresponding path program 1 times [2024-12-02 14:46:45,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:46:45,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850587480] [2024-12-02 14:46:45,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:46:45,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:46:45,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:47:50,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:47:50,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:47:50,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850587480] [2024-12-02 14:47:50,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850587480] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:47:50,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:47:50,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 14:47:50,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531458218] [2024-12-02 14:47:50,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:47:50,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 14:47:50,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:47:50,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 14:47:50,060 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:47:50,060 INFO L87 Difference]: Start difference. First operand 882 states and 1349 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:47:51,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:47:51,895 INFO L93 Difference]: Finished difference Result 1874 states and 2855 transitions. [2024-12-02 14:47:51,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 14:47:51,895 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 204 [2024-12-02 14:47:51,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:47:51,900 INFO L225 Difference]: With dead ends: 1874 [2024-12-02 14:47:51,900 INFO L226 Difference]: Without dead ends: 1273 [2024-12-02 14:47:51,902 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-12-02 14:47:51,902 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 155 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:47:51,902 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 1034 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 14:47:51,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2024-12-02 14:47:51,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1156. [2024-12-02 14:47:51,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1059 states have (on average 1.4589235127478755) internal successors, (1545), 1062 states have internal predecessors, (1545), 84 states have call successors, (84), 12 states have call predecessors, (84), 12 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2024-12-02 14:47:51,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1713 transitions. [2024-12-02 14:47:51,978 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1713 transitions. Word has length 204 [2024-12-02 14:47:51,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:47:51,978 INFO L471 AbstractCegarLoop]: Abstraction has 1156 states and 1713 transitions. [2024-12-02 14:47:51,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:47:51,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1713 transitions. [2024-12-02 14:47:51,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-12-02 14:47:51,980 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:47:51,980 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:47:51,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 14:47:51,980 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:47:51,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:47:51,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1400787672, now seen corresponding path program 1 times [2024-12-02 14:47:51,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:47:51,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900491818] [2024-12-02 14:47:51,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:47:51,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:47:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:48:00,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:48:00,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:48:00,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900491818] [2024-12-02 14:48:00,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900491818] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:48:00,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:48:00,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 14:48:00,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716515687] [2024-12-02 14:48:00,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:48:00,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 14:48:00,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:48:00,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 14:48:00,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-12-02 14:48:00,410 INFO L87 Difference]: Start difference. First operand 1156 states and 1713 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:48:02,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:48:02,398 INFO L93 Difference]: Finished difference Result 2499 states and 3675 transitions. [2024-12-02 14:48:02,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 14:48:02,398 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 204 [2024-12-02 14:48:02,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:48:02,404 INFO L225 Difference]: With dead ends: 2499 [2024-12-02 14:48:02,404 INFO L226 Difference]: Without dead ends: 1930 [2024-12-02 14:48:02,405 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2024-12-02 14:48:02,406 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 557 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:48:02,406 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [557 Valid, 570 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 14:48:02,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1930 states. [2024-12-02 14:48:02,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1930 to 1195. [2024-12-02 14:48:02,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 1098 states have (on average 1.4617486338797814) internal successors, (1605), 1101 states have internal predecessors, (1605), 84 states have call successors, (84), 12 states have call predecessors, (84), 12 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2024-12-02 14:48:02,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1773 transitions. [2024-12-02 14:48:02,474 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1773 transitions. Word has length 204 [2024-12-02 14:48:02,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:48:02,474 INFO L471 AbstractCegarLoop]: Abstraction has 1195 states and 1773 transitions. [2024-12-02 14:48:02,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:48:02,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1773 transitions. [2024-12-02 14:48:02,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-12-02 14:48:02,475 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:48:02,475 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:48:02,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 14:48:02,475 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:48:02,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:48:02,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1796534465, now seen corresponding path program 1 times [2024-12-02 14:48:02,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:48:02,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136650853] [2024-12-02 14:48:02,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:48:02,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:48:02,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:48:02,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:48:02,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:48:02,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136650853] [2024-12-02 14:48:02,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136650853] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:48:02,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:48:02,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:48:02,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195170744] [2024-12-02 14:48:02,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:48:02,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:48:02,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:48:02,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:48:02,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:48:02,587 INFO L87 Difference]: Start difference. First operand 1195 states and 1773 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:48:02,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:48:02,847 INFO L93 Difference]: Finished difference Result 2178 states and 3227 transitions. [2024-12-02 14:48:02,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:48:02,848 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 204 [2024-12-02 14:48:02,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:48:02,854 INFO L225 Difference]: With dead ends: 2178 [2024-12-02 14:48:02,854 INFO L226 Difference]: Without dead ends: 1572 [2024-12-02 14:48:02,855 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:48:02,856 INFO L435 NwaCegarLoop]: 223 mSDtfsCounter, 135 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:48:02,856 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 424 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:48:02,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2024-12-02 14:48:02,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1059. [2024-12-02 14:48:02,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 962 states have (on average 1.4688149688149688) internal successors, (1413), 965 states have internal predecessors, (1413), 84 states have call successors, (84), 12 states have call predecessors, (84), 12 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2024-12-02 14:48:02,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 1581 transitions. [2024-12-02 14:48:02,927 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 1581 transitions. Word has length 204 [2024-12-02 14:48:02,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:48:02,927 INFO L471 AbstractCegarLoop]: Abstraction has 1059 states and 1581 transitions. [2024-12-02 14:48:02,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:48:02,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 1581 transitions. [2024-12-02 14:48:02,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-12-02 14:48:02,928 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:48:02,928 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:48:02,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 14:48:02,928 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:48:02,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:48:02,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1679227855, now seen corresponding path program 1 times [2024-12-02 14:48:02,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:48:02,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148716945] [2024-12-02 14:48:02,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:48:02,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:48:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:48:03,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:48:03,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:48:03,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148716945] [2024-12-02 14:48:03,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148716945] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:48:03,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:48:03,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 14:48:03,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15125309] [2024-12-02 14:48:03,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:48:03,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 14:48:03,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:48:03,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 14:48:03,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:48:03,674 INFO L87 Difference]: Start difference. First operand 1059 states and 1581 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:48:04,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:48:04,082 INFO L93 Difference]: Finished difference Result 2017 states and 2983 transitions. [2024-12-02 14:48:04,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 14:48:04,083 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 205 [2024-12-02 14:48:04,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:48:04,087 INFO L225 Difference]: With dead ends: 2017 [2024-12-02 14:48:04,088 INFO L226 Difference]: Without dead ends: 1269 [2024-12-02 14:48:04,089 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2024-12-02 14:48:04,091 INFO L435 NwaCegarLoop]: 198 mSDtfsCounter, 179 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:48:04,091 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 1053 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 14:48:04,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2024-12-02 14:48:04,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1007. [2024-12-02 14:48:04,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1007 states, 910 states have (on average 1.443956043956044) internal successors, (1314), 913 states have internal predecessors, (1314), 84 states have call successors, (84), 12 states have call predecessors, (84), 12 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2024-12-02 14:48:04,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1482 transitions. [2024-12-02 14:48:04,160 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1482 transitions. Word has length 205 [2024-12-02 14:48:04,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:48:04,161 INFO L471 AbstractCegarLoop]: Abstraction has 1007 states and 1482 transitions. [2024-12-02 14:48:04,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:48:04,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1482 transitions. [2024-12-02 14:48:04,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-12-02 14:48:04,162 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:48:04,162 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:48:04,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 14:48:04,163 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:48:04,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:48:04,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1092553154, now seen corresponding path program 1 times [2024-12-02 14:48:04,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:48:04,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922659713] [2024-12-02 14:48:04,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:48:04,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:48:04,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:48:04,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:48:04,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:48:04,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922659713] [2024-12-02 14:48:04,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922659713] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:48:04,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:48:04,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:48:04,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866999680] [2024-12-02 14:48:04,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:48:04,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:48:04,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:48:04,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:48:04,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:48:04,906 INFO L87 Difference]: Start difference. First operand 1007 states and 1482 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:48:05,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:48:05,659 INFO L93 Difference]: Finished difference Result 2407 states and 3566 transitions. [2024-12-02 14:48:05,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 14:48:05,659 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 205 [2024-12-02 14:48:05,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:48:05,664 INFO L225 Difference]: With dead ends: 2407 [2024-12-02 14:48:05,664 INFO L226 Difference]: Without dead ends: 1684 [2024-12-02 14:48:05,665 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-12-02 14:48:05,666 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 526 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:48:05,666 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 584 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 14:48:05,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2024-12-02 14:48:05,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 969. [2024-12-02 14:48:05,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 872 states have (on average 1.4426605504587156) internal successors, (1258), 875 states have internal predecessors, (1258), 84 states have call successors, (84), 12 states have call predecessors, (84), 12 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2024-12-02 14:48:05,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1426 transitions. [2024-12-02 14:48:05,739 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1426 transitions. Word has length 205 [2024-12-02 14:48:05,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:48:05,739 INFO L471 AbstractCegarLoop]: Abstraction has 969 states and 1426 transitions. [2024-12-02 14:48:05,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:48:05,740 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1426 transitions. [2024-12-02 14:48:05,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-12-02 14:48:05,741 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:48:05,741 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:48:05,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 14:48:05,742 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:48:05,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:48:05,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1296400262, now seen corresponding path program 1 times [2024-12-02 14:48:05,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:48:05,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147130269] [2024-12-02 14:48:05,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:48:05,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:48:05,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:48:12,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:48:12,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:48:12,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147130269] [2024-12-02 14:48:12,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147130269] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:48:12,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:48:12,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 14:48:12,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776988889] [2024-12-02 14:48:12,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:48:12,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 14:48:12,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:48:12,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 14:48:12,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-12-02 14:48:12,417 INFO L87 Difference]: Start difference. First operand 969 states and 1426 transitions. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:48:17,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:48:17,852 INFO L93 Difference]: Finished difference Result 2537 states and 3749 transitions. [2024-12-02 14:48:17,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 14:48:17,853 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 205 [2024-12-02 14:48:17,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:48:17,856 INFO L225 Difference]: With dead ends: 2537 [2024-12-02 14:48:17,856 INFO L226 Difference]: Without dead ends: 1852 [2024-12-02 14:48:17,857 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2024-12-02 14:48:17,857 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 608 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:48:17,857 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 669 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-12-02 14:48:17,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2024-12-02 14:48:17,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 858. [2024-12-02 14:48:17,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 761 states have (on average 1.445466491458607) internal successors, (1100), 764 states have internal predecessors, (1100), 84 states have call successors, (84), 12 states have call predecessors, (84), 12 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2024-12-02 14:48:17,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1268 transitions. [2024-12-02 14:48:17,929 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1268 transitions. Word has length 205 [2024-12-02 14:48:17,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:48:17,929 INFO L471 AbstractCegarLoop]: Abstraction has 858 states and 1268 transitions. [2024-12-02 14:48:17,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:48:17,929 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1268 transitions. [2024-12-02 14:48:17,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-12-02 14:48:17,930 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:48:17,930 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:48:17,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 14:48:17,930 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:48:17,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:48:17,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1233101764, now seen corresponding path program 1 times [2024-12-02 14:48:17,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:48:17,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931268843] [2024-12-02 14:48:17,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:48:17,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:48:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:48:29,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:48:29,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:48:29,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931268843] [2024-12-02 14:48:29,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931268843] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:48:29,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:48:29,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 14:48:29,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198911089] [2024-12-02 14:48:29,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:48:29,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 14:48:29,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:48:29,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 14:48:29,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-12-02 14:48:29,417 INFO L87 Difference]: Start difference. First operand 858 states and 1268 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-12-02 14:48:31,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:48:31,869 INFO L93 Difference]: Finished difference Result 2508 states and 3697 transitions. [2024-12-02 14:48:31,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 14:48:31,870 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) Word has length 205 [2024-12-02 14:48:31,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:48:31,873 INFO L225 Difference]: With dead ends: 2508 [2024-12-02 14:48:31,873 INFO L226 Difference]: Without dead ends: 1842 [2024-12-02 14:48:31,874 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2024-12-02 14:48:31,874 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 534 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:48:31,874 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 1179 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 14:48:31,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1842 states. [2024-12-02 14:48:31,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1842 to 909. [2024-12-02 14:48:31,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 812 states have (on average 1.4544334975369457) internal successors, (1181), 815 states have internal predecessors, (1181), 84 states have call successors, (84), 12 states have call predecessors, (84), 12 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2024-12-02 14:48:31,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1349 transitions. [2024-12-02 14:48:31,946 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1349 transitions. Word has length 205 [2024-12-02 14:48:31,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:48:31,946 INFO L471 AbstractCegarLoop]: Abstraction has 909 states and 1349 transitions. [2024-12-02 14:48:31,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-12-02 14:48:31,946 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1349 transitions. [2024-12-02 14:48:31,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-12-02 14:48:31,947 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:48:31,947 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:48:31,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 14:48:31,947 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:48:31,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:48:31,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1014247046, now seen corresponding path program 1 times [2024-12-02 14:48:31,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:48:31,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485757559] [2024-12-02 14:48:31,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:48:31,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:48:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:48:40,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:48:40,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:48:40,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485757559] [2024-12-02 14:48:40,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485757559] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:48:40,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:48:40,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 14:48:40,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698044077] [2024-12-02 14:48:40,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:48:40,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 14:48:40,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:48:40,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 14:48:40,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-12-02 14:48:40,056 INFO L87 Difference]: Start difference. First operand 909 states and 1349 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-12-02 14:48:42,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:48:42,201 INFO L93 Difference]: Finished difference Result 2438 states and 3592 transitions. [2024-12-02 14:48:42,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 14:48:42,202 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) Word has length 205 [2024-12-02 14:48:42,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:48:42,205 INFO L225 Difference]: With dead ends: 2438 [2024-12-02 14:48:42,205 INFO L226 Difference]: Without dead ends: 1772 [2024-12-02 14:48:42,206 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2024-12-02 14:48:42,206 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 632 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:48:42,206 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 1017 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 14:48:42,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1772 states. [2024-12-02 14:48:42,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1772 to 960. [2024-12-02 14:48:42,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 863 states have (on average 1.4623406720741599) internal successors, (1262), 866 states have internal predecessors, (1262), 84 states have call successors, (84), 12 states have call predecessors, (84), 12 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2024-12-02 14:48:42,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1430 transitions. [2024-12-02 14:48:42,294 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1430 transitions. Word has length 205 [2024-12-02 14:48:42,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:48:42,295 INFO L471 AbstractCegarLoop]: Abstraction has 960 states and 1430 transitions. [2024-12-02 14:48:42,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-12-02 14:48:42,295 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1430 transitions. [2024-12-02 14:48:42,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-12-02 14:48:42,295 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:48:42,296 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:48:42,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 14:48:42,296 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:48:42,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:48:42,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1030513540, now seen corresponding path program 1 times [2024-12-02 14:48:42,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:48:42,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998997228] [2024-12-02 14:48:42,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:48:42,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:48:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:48:49,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:48:49,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:48:49,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998997228] [2024-12-02 14:48:49,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998997228] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:48:49,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:48:49,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 14:48:49,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5289849] [2024-12-02 14:48:49,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:48:49,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 14:48:49,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:48:49,213 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 14:48:49,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:48:49,213 INFO L87 Difference]: Start difference. First operand 960 states and 1430 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:48:50,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:48:50,376 INFO L93 Difference]: Finished difference Result 2000 states and 2983 transitions. [2024-12-02 14:48:50,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 14:48:50,377 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 205 [2024-12-02 14:48:50,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:48:50,379 INFO L225 Difference]: With dead ends: 2000 [2024-12-02 14:48:50,379 INFO L226 Difference]: Without dead ends: 1334 [2024-12-02 14:48:50,380 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-12-02 14:48:50,381 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 344 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 14:48:50,381 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 686 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 14:48:50,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2024-12-02 14:48:50,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 921. [2024-12-02 14:48:50,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 824 states have (on average 1.4575242718446602) internal successors, (1201), 827 states have internal predecessors, (1201), 84 states have call successors, (84), 12 states have call predecessors, (84), 12 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2024-12-02 14:48:50,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1369 transitions. [2024-12-02 14:48:50,456 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1369 transitions. Word has length 205 [2024-12-02 14:48:50,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:48:50,456 INFO L471 AbstractCegarLoop]: Abstraction has 921 states and 1369 transitions. [2024-12-02 14:48:50,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:48:50,456 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1369 transitions. [2024-12-02 14:48:50,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-12-02 14:48:50,457 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:48:50,457 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:48:50,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-02 14:48:50,457 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:48:50,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:48:50,457 INFO L85 PathProgramCache]: Analyzing trace with hash -811658822, now seen corresponding path program 1 times [2024-12-02 14:48:50,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:48:50,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864932028] [2024-12-02 14:48:50,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:48:50,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:48:50,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:48:55,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:48:55,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:48:55,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864932028] [2024-12-02 14:48:55,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864932028] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:48:55,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:48:55,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 14:48:55,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123227352] [2024-12-02 14:48:55,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:48:55,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 14:48:55,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:48:55,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 14:48:55,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:48:55,227 INFO L87 Difference]: Start difference. First operand 921 states and 1369 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:48:56,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:48:56,168 INFO L93 Difference]: Finished difference Result 1996 states and 2978 transitions. [2024-12-02 14:48:56,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 14:48:56,169 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 205 [2024-12-02 14:48:56,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:48:56,171 INFO L225 Difference]: With dead ends: 1996 [2024-12-02 14:48:56,172 INFO L226 Difference]: Without dead ends: 1295 [2024-12-02 14:48:56,172 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-12-02 14:48:56,173 INFO L435 NwaCegarLoop]: 175 mSDtfsCounter, 295 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:48:56,173 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 579 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 14:48:56,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2024-12-02 14:48:56,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 905. [2024-12-02 14:48:56,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 808 states have (on average 1.4554455445544554) internal successors, (1176), 811 states have internal predecessors, (1176), 84 states have call successors, (84), 12 states have call predecessors, (84), 12 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2024-12-02 14:48:56,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1344 transitions. [2024-12-02 14:48:56,242 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1344 transitions. Word has length 205 [2024-12-02 14:48:56,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:48:56,242 INFO L471 AbstractCegarLoop]: Abstraction has 905 states and 1344 transitions. [2024-12-02 14:48:56,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:48:56,243 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1344 transitions. [2024-12-02 14:48:56,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-12-02 14:48:56,243 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:48:56,243 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:48:56,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-12-02 14:48:56,244 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:48:56,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:48:56,244 INFO L85 PathProgramCache]: Analyzing trace with hash 747444893, now seen corresponding path program 1 times [2024-12-02 14:48:56,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:48:56,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966060214] [2024-12-02 14:48:56,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:48:56,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:48:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:48:56,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:48:56,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:48:56,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966060214] [2024-12-02 14:48:56,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966060214] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:48:56,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:48:56,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:48:56,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841416751] [2024-12-02 14:48:56,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:48:56,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:48:56,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:48:56,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:48:56,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:48:56,303 INFO L87 Difference]: Start difference. First operand 905 states and 1344 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:48:56,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:48:56,466 INFO L93 Difference]: Finished difference Result 1748 states and 2581 transitions. [2024-12-02 14:48:56,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:48:56,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 206 [2024-12-02 14:48:56,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:48:56,468 INFO L225 Difference]: With dead ends: 1748 [2024-12-02 14:48:56,469 INFO L226 Difference]: Without dead ends: 1012 [2024-12-02 14:48:56,469 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:48:56,469 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 70 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:48:56,470 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 314 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:48:56,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2024-12-02 14:48:56,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 843. [2024-12-02 14:48:56,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 765 states have (on average 1.4627450980392156) internal successors, (1119), 766 states have internal predecessors, (1119), 68 states have call successors, (68), 9 states have call predecessors, (68), 9 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-12-02 14:48:56,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1255 transitions. [2024-12-02 14:48:56,521 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1255 transitions. Word has length 206 [2024-12-02 14:48:56,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:48:56,522 INFO L471 AbstractCegarLoop]: Abstraction has 843 states and 1255 transitions. [2024-12-02 14:48:56,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:48:56,522 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1255 transitions. [2024-12-02 14:48:56,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-12-02 14:48:56,522 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:48:56,523 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:48:56,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-12-02 14:48:56,523 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:48:56,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:48:56,523 INFO L85 PathProgramCache]: Analyzing trace with hash 494475533, now seen corresponding path program 1 times [2024-12-02 14:48:56,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:48:56,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986729396] [2024-12-02 14:48:56,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:48:56,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:48:56,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:48:56,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:48:56,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:48:56,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986729396] [2024-12-02 14:48:56,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986729396] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:48:56,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:48:56,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:48:56,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21495346] [2024-12-02 14:48:56,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:48:56,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:48:56,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:48:56,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:48:56,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:48:56,582 INFO L87 Difference]: Start difference. First operand 843 states and 1255 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:48:56,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:48:56,707 INFO L93 Difference]: Finished difference Result 1572 states and 2336 transitions. [2024-12-02 14:48:56,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:48:56,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 206 [2024-12-02 14:48:56,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:48:56,709 INFO L225 Difference]: With dead ends: 1572 [2024-12-02 14:48:56,709 INFO L226 Difference]: Without dead ends: 902 [2024-12-02 14:48:56,710 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:48:56,711 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 65 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:48:56,711 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 318 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:48:56,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2024-12-02 14:48:56,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 803. [2024-12-02 14:48:56,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 725 states have (on average 1.4593103448275861) internal successors, (1058), 726 states have internal predecessors, (1058), 68 states have call successors, (68), 9 states have call predecessors, (68), 9 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-12-02 14:48:56,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1194 transitions. [2024-12-02 14:48:56,762 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1194 transitions. Word has length 206 [2024-12-02 14:48:56,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:48:56,762 INFO L471 AbstractCegarLoop]: Abstraction has 803 states and 1194 transitions. [2024-12-02 14:48:56,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:48:56,762 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1194 transitions. [2024-12-02 14:48:56,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-12-02 14:48:56,763 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:48:56,763 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:48:56,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-12-02 14:48:56,763 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:48:56,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:48:56,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1572790214, now seen corresponding path program 1 times [2024-12-02 14:48:56,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:48:56,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414837848] [2024-12-02 14:48:56,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:48:56,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:48:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:49:37,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:49:37,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:49:37,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414837848] [2024-12-02 14:49:37,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414837848] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:49:37,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:49:37,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 14:49:37,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938388515] [2024-12-02 14:49:37,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:49:37,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 14:49:37,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:49:37,299 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 14:49:37,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-12-02 14:49:37,300 INFO L87 Difference]: Start difference. First operand 803 states and 1194 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:49:38,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:49:38,540 INFO L93 Difference]: Finished difference Result 1625 states and 2381 transitions. [2024-12-02 14:49:38,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 14:49:38,540 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 206 [2024-12-02 14:49:38,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:49:38,543 INFO L225 Difference]: With dead ends: 1625 [2024-12-02 14:49:38,544 INFO L226 Difference]: Without dead ends: 955 [2024-12-02 14:49:38,544 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-12-02 14:49:38,545 INFO L435 NwaCegarLoop]: 242 mSDtfsCounter, 225 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 14:49:38,545 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 1441 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 14:49:38,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2024-12-02 14:49:38,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 753. [2024-12-02 14:49:38,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 675 states have (on average 1.431111111111111) internal successors, (966), 676 states have internal predecessors, (966), 68 states have call successors, (68), 9 states have call predecessors, (68), 9 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-12-02 14:49:38,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1102 transitions. [2024-12-02 14:49:38,609 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1102 transitions. Word has length 206 [2024-12-02 14:49:38,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:49:38,609 INFO L471 AbstractCegarLoop]: Abstraction has 753 states and 1102 transitions. [2024-12-02 14:49:38,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:49:38,609 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1102 transitions. [2024-12-02 14:49:38,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-12-02 14:49:38,610 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:49:38,610 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:49:38,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-12-02 14:49:38,610 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:49:38,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:49:38,611 INFO L85 PathProgramCache]: Analyzing trace with hash -970906848, now seen corresponding path program 1 times [2024-12-02 14:49:38,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:49:38,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622634883] [2024-12-02 14:49:38,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:49:38,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:49:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:49:51,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:49:51,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:49:51,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622634883] [2024-12-02 14:49:51,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622634883] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:49:51,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:49:51,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 14:49:51,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784598145] [2024-12-02 14:49:51,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:49:51,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 14:49:51,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:49:51,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 14:49:51,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:49:51,061 INFO L87 Difference]: Start difference. First operand 753 states and 1102 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:49:52,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:49:52,196 INFO L93 Difference]: Finished difference Result 1007 states and 1447 transitions. [2024-12-02 14:49:52,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:49:52,196 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 207 [2024-12-02 14:49:52,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:49:52,198 INFO L225 Difference]: With dead ends: 1007 [2024-12-02 14:49:52,198 INFO L226 Difference]: Without dead ends: 1005 [2024-12-02 14:49:52,199 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-12-02 14:49:52,199 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 147 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:49:52,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 863 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 14:49:52,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2024-12-02 14:49:52,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 853. [2024-12-02 14:49:52,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 775 states have (on average 1.4425806451612904) internal successors, (1118), 776 states have internal predecessors, (1118), 68 states have call successors, (68), 9 states have call predecessors, (68), 9 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-12-02 14:49:52,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1254 transitions. [2024-12-02 14:49:52,270 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1254 transitions. Word has length 207 [2024-12-02 14:49:52,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:49:52,271 INFO L471 AbstractCegarLoop]: Abstraction has 853 states and 1254 transitions. [2024-12-02 14:49:52,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:49:52,271 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1254 transitions. [2024-12-02 14:49:52,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-12-02 14:49:52,272 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:49:52,272 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:49:52,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-12-02 14:49:52,272 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:49:52,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:49:52,273 INFO L85 PathProgramCache]: Analyzing trace with hash -46966530, now seen corresponding path program 1 times [2024-12-02 14:49:52,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:49:52,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770877630] [2024-12-02 14:49:52,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:49:52,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:49:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:50:36,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:50:36,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:50:36,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770877630] [2024-12-02 14:50:36,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770877630] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:50:36,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:50:36,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 14:50:36,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934600229] [2024-12-02 14:50:36,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:50:36,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 14:50:36,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:50:36,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 14:50:36,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:50:36,903 INFO L87 Difference]: Start difference. First operand 853 states and 1254 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:50:38,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:50:38,237 INFO L93 Difference]: Finished difference Result 1853 states and 2683 transitions. [2024-12-02 14:50:38,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 14:50:38,238 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 208 [2024-12-02 14:50:38,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:50:38,240 INFO L225 Difference]: With dead ends: 1853 [2024-12-02 14:50:38,240 INFO L226 Difference]: Without dead ends: 1133 [2024-12-02 14:50:38,241 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2024-12-02 14:50:38,241 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 328 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 14:50:38,241 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 1036 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 14:50:38,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2024-12-02 14:50:38,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 885. [2024-12-02 14:50:38,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 807 states have (on average 1.4374225526641884) internal successors, (1160), 808 states have internal predecessors, (1160), 68 states have call successors, (68), 9 states have call predecessors, (68), 9 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-12-02 14:50:38,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1296 transitions. [2024-12-02 14:50:38,296 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1296 transitions. Word has length 208 [2024-12-02 14:50:38,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:50:38,296 INFO L471 AbstractCegarLoop]: Abstraction has 885 states and 1296 transitions. [2024-12-02 14:50:38,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:50:38,296 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1296 transitions. [2024-12-02 14:50:38,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-12-02 14:50:38,297 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:50:38,297 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:50:38,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-12-02 14:50:38,297 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:50:38,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:50:38,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1469057909, now seen corresponding path program 1 times [2024-12-02 14:50:38,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:50:38,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364232946] [2024-12-02 14:50:38,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:50:38,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:50:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:50:38,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:50:38,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:50:38,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364232946] [2024-12-02 14:50:38,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364232946] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:50:38,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:50:38,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:50:38,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702189532] [2024-12-02 14:50:38,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:50:38,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:50:38,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:50:38,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:50:38,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:50:38,415 INFO L87 Difference]: Start difference. First operand 885 states and 1296 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:50:38,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:50:38,715 INFO L93 Difference]: Finished difference Result 1957 states and 2846 transitions. [2024-12-02 14:50:38,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:50:38,715 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 208 [2024-12-02 14:50:38,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:50:38,718 INFO L225 Difference]: With dead ends: 1957 [2024-12-02 14:50:38,718 INFO L226 Difference]: Without dead ends: 1205 [2024-12-02 14:50:38,719 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 [2024-12-02 14:50:38,719 INFO L435 NwaCegarLoop]: 223 mSDtfsCounter, 155 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:50:38,719 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 661 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 14:50:38,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2024-12-02 14:50:38,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 935. [2024-12-02 14:50:38,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 935 states, 857 states have (on average 1.4375729288214703) internal successors, (1232), 858 states have internal predecessors, (1232), 68 states have call successors, (68), 9 states have call predecessors, (68), 9 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-12-02 14:50:38,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1368 transitions. [2024-12-02 14:50:38,776 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1368 transitions. Word has length 208 [2024-12-02 14:50:38,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:50:38,776 INFO L471 AbstractCegarLoop]: Abstraction has 935 states and 1368 transitions. [2024-12-02 14:50:38,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:50:38,776 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1368 transitions. [2024-12-02 14:50:38,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-12-02 14:50:38,777 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:50:38,777 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:50:38,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-12-02 14:50:38,777 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:50:38,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:50:38,778 INFO L85 PathProgramCache]: Analyzing trace with hash 258030268, now seen corresponding path program 1 times [2024-12-02 14:50:38,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:50:38,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678924011] [2024-12-02 14:50:38,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:50:38,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:50:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:50:38,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:50:38,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:50:38,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678924011] [2024-12-02 14:50:38,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678924011] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:50:38,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:50:38,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:50:38,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744643798] [2024-12-02 14:50:38,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:50:38,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:50:38,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:50:38,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:50:38,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:50:38,829 INFO L87 Difference]: Start difference. First operand 935 states and 1368 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:50:38,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:50:38,969 INFO L93 Difference]: Finished difference Result 2086 states and 3057 transitions. [2024-12-02 14:50:38,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:50:38,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 209 [2024-12-02 14:50:38,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:50:38,972 INFO L225 Difference]: With dead ends: 2086 [2024-12-02 14:50:38,972 INFO L226 Difference]: Without dead ends: 1284 [2024-12-02 14:50:38,973 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:50:38,973 INFO L435 NwaCegarLoop]: 227 mSDtfsCounter, 62 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:50:38,973 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 358 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:50:38,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2024-12-02 14:50:39,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1185. [2024-12-02 14:50:39,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 1107 states have (on average 1.4525745257452574) internal successors, (1608), 1108 states have internal predecessors, (1608), 68 states have call successors, (68), 9 states have call predecessors, (68), 9 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-12-02 14:50:39,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1744 transitions. [2024-12-02 14:50:39,038 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1744 transitions. Word has length 209 [2024-12-02 14:50:39,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:50:39,038 INFO L471 AbstractCegarLoop]: Abstraction has 1185 states and 1744 transitions. [2024-12-02 14:50:39,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:50:39,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1744 transitions. [2024-12-02 14:50:39,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-12-02 14:50:39,039 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:50:39,040 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:50:39,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-12-02 14:50:39,040 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:50:39,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:50:39,040 INFO L85 PathProgramCache]: Analyzing trace with hash 95048424, now seen corresponding path program 1 times [2024-12-02 14:50:39,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:50:39,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813788102] [2024-12-02 14:50:39,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:50:39,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:50:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:50:39,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:50:39,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:50:39,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813788102] [2024-12-02 14:50:39,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813788102] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:50:39,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:50:39,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:50:39,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318193489] [2024-12-02 14:50:39,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:50:39,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:50:39,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:50:39,090 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:50:39,090 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:50:39,090 INFO L87 Difference]: Start difference. First operand 1185 states and 1744 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:50:39,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:50:39,233 INFO L93 Difference]: Finished difference Result 2304 states and 3379 transitions. [2024-12-02 14:50:39,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:50:39,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 209 [2024-12-02 14:50:39,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:50:39,236 INFO L225 Difference]: With dead ends: 2304 [2024-12-02 14:50:39,236 INFO L226 Difference]: Without dead ends: 1252 [2024-12-02 14:50:39,237 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:50:39,238 INFO L435 NwaCegarLoop]: 195 mSDtfsCounter, 67 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:50:39,238 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 324 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:50:39,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2024-12-02 14:50:39,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1153. [2024-12-02 14:50:39,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 1075 states have (on average 1.4455813953488372) internal successors, (1554), 1076 states have internal predecessors, (1554), 68 states have call successors, (68), 9 states have call predecessors, (68), 9 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-12-02 14:50:39,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1690 transitions. [2024-12-02 14:50:39,296 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1690 transitions. Word has length 209 [2024-12-02 14:50:39,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:50:39,296 INFO L471 AbstractCegarLoop]: Abstraction has 1153 states and 1690 transitions. [2024-12-02 14:50:39,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:50:39,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1690 transitions. [2024-12-02 14:50:39,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-12-02 14:50:39,297 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:50:39,297 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:50:39,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-12-02 14:50:39,297 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:50:39,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:50:39,298 INFO L85 PathProgramCache]: Analyzing trace with hash -899821941, now seen corresponding path program 1 times [2024-12-02 14:50:39,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:50:39,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64484923] [2024-12-02 14:50:39,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:50:39,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:50:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:50:43,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:50:43,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:50:43,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64484923] [2024-12-02 14:50:43,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64484923] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:50:43,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:50:43,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 14:50:43,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389135064] [2024-12-02 14:50:43,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:50:43,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 14:50:43,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:50:43,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 14:50:43,851 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-12-02 14:50:43,851 INFO L87 Difference]: Start difference. First operand 1153 states and 1690 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, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:50:44,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:50:44,635 INFO L93 Difference]: Finished difference Result 2597 states and 3762 transitions. [2024-12-02 14:50:44,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 14:50:44,635 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, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 209 [2024-12-02 14:50:44,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:50:44,639 INFO L225 Difference]: With dead ends: 2597 [2024-12-02 14:50:44,640 INFO L226 Difference]: Without dead ends: 1577 [2024-12-02 14:50:44,641 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-12-02 14:50:44,641 INFO L435 NwaCegarLoop]: 229 mSDtfsCounter, 328 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:50:44,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 1208 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 14:50:44,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1577 states. [2024-12-02 14:50:44,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1577 to 1201. [2024-12-02 14:50:44,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1123 states have (on average 1.447907390917186) internal successors, (1626), 1124 states have internal predecessors, (1626), 68 states have call successors, (68), 9 states have call predecessors, (68), 9 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-12-02 14:50:44,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1762 transitions. [2024-12-02 14:50:44,732 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1762 transitions. Word has length 209 [2024-12-02 14:50:44,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:50:44,732 INFO L471 AbstractCegarLoop]: Abstraction has 1201 states and 1762 transitions. [2024-12-02 14:50:44,733 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, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:50:44,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1762 transitions. [2024-12-02 14:50:44,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-12-02 14:50:44,734 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:50:44,734 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:50:44,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-12-02 14:50:44,734 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:50:44,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:50:44,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1475271929, now seen corresponding path program 1 times [2024-12-02 14:50:44,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:50:44,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120115779] [2024-12-02 14:50:44,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:50:44,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:50:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:50:44,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 24 proven. 66 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2024-12-02 14:50:44,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:50:44,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120115779] [2024-12-02 14:50:44,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120115779] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:50:44,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267679456] [2024-12-02 14:50:44,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:50:44,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:50:44,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc57c4e1-3c25-466c-b50c-e8426e44a3c1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:50:44,884 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc57c4e1-3c25-466c-b50c-e8426e44a3c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:50:44,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc57c4e1-3c25-466c-b50c-e8426e44a3c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 14:50:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:50:45,033 INFO L256 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 14:50:45,036 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:50:45,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 750 proven. 66 refuted. 0 times theorem prover too weak. 1044 trivial. 0 not checked. [2024-12-02 14:50:45,307 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:50:45,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 24 proven. 66 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2024-12-02 14:50:45,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267679456] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:50:45,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:50:45,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-12-02 14:50:45,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295035175] [2024-12-02 14:50:45,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:50:45,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 14:50:45,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:50:45,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 14:50:45,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:50:45,554 INFO L87 Difference]: Start difference. First operand 1201 states and 1762 transitions. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 3 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 3 states have call predecessors, (76), 3 states have call successors, (76) [2024-12-02 14:50:46,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:50:46,075 INFO L93 Difference]: Finished difference Result 2167 states and 3172 transitions. [2024-12-02 14:50:46,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 14:50:46,075 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 3 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 3 states have call predecessors, (76), 3 states have call successors, (76) Word has length 210 [2024-12-02 14:50:46,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:50:46,078 INFO L225 Difference]: With dead ends: 2167 [2024-12-02 14:50:46,078 INFO L226 Difference]: Without dead ends: 1044 [2024-12-02 14:50:46,079 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2024-12-02 14:50:46,079 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 320 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:50:46,080 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 451 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 14:50:46,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2024-12-02 14:50:46,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 982. [2024-12-02 14:50:46,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 902 states have (on average 1.4146341463414633) internal successors, (1276), 903 states have internal predecessors, (1276), 68 states have call successors, (68), 11 states have call predecessors, (68), 11 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-12-02 14:50:46,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1412 transitions. [2024-12-02 14:50:46,194 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1412 transitions. Word has length 210 [2024-12-02 14:50:46,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:50:46,195 INFO L471 AbstractCegarLoop]: Abstraction has 982 states and 1412 transitions. [2024-12-02 14:50:46,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 3 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 3 states have call predecessors, (76), 3 states have call successors, (76) [2024-12-02 14:50:46,195 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1412 transitions. [2024-12-02 14:50:46,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-12-02 14:50:46,196 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:50:46,196 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:50:46,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc57c4e1-3c25-466c-b50c-e8426e44a3c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 14:50:46,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc57c4e1-3c25-466c-b50c-e8426e44a3c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:50:46,397 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:50:46,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:50:46,397 INFO L85 PathProgramCache]: Analyzing trace with hash -164324321, now seen corresponding path program 1 times [2024-12-02 14:50:46,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:50:46,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975333923] [2024-12-02 14:50:46,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:50:46,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:50:46,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:50:49,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:50:49,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:50:49,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975333923] [2024-12-02 14:50:49,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975333923] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:50:49,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:50:49,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 14:50:49,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218763619] [2024-12-02 14:50:49,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:50:49,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 14:50:49,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:50:49,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 14:50:49,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-12-02 14:50:49,730 INFO L87 Difference]: Start difference. First operand 982 states and 1412 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, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:50:50,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:50:50,373 INFO L93 Difference]: Finished difference Result 1190 states and 1672 transitions. [2024-12-02 14:50:50,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 14:50:50,373 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, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 210 [2024-12-02 14:50:50,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:50:50,376 INFO L225 Difference]: With dead ends: 1190 [2024-12-02 14:50:50,376 INFO L226 Difference]: Without dead ends: 1188 [2024-12-02 14:50:50,376 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2024-12-02 14:50:50,376 INFO L435 NwaCegarLoop]: 182 mSDtfsCounter, 205 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:50:50,377 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 1284 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 14:50:50,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2024-12-02 14:50:50,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 982. [2024-12-02 14:50:50,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 902 states have (on average 1.4146341463414633) internal successors, (1276), 903 states have internal predecessors, (1276), 68 states have call successors, (68), 11 states have call predecessors, (68), 11 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-12-02 14:50:50,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1412 transitions. [2024-12-02 14:50:50,444 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1412 transitions. Word has length 210 [2024-12-02 14:50:50,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:50:50,444 INFO L471 AbstractCegarLoop]: Abstraction has 982 states and 1412 transitions. [2024-12-02 14:50:50,445 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, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:50:50,445 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1412 transitions. [2024-12-02 14:50:50,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-12-02 14:50:50,446 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:50:50,446 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:50:50,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-12-02 14:50:50,446 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:50:50,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:50:50,447 INFO L85 PathProgramCache]: Analyzing trace with hash 741248214, now seen corresponding path program 1 times [2024-12-02 14:50:50,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:50:50,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956324938] [2024-12-02 14:50:50,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:50:50,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:50:50,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:51:14,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:51:14,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:51:14,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956324938] [2024-12-02 14:51:14,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956324938] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:51:14,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:51:14,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 14:51:14,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065127206] [2024-12-02 14:51:14,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:51:14,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 14:51:14,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:51:14,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 14:51:14,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:51:14,922 INFO L87 Difference]: Start difference. First operand 982 states and 1412 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:51:16,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:51:16,489 INFO L93 Difference]: Finished difference Result 1178 states and 1682 transitions. [2024-12-02 14:51:16,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 14:51:16,489 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 210 [2024-12-02 14:51:16,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:51:16,491 INFO L225 Difference]: With dead ends: 1178 [2024-12-02 14:51:16,491 INFO L226 Difference]: Without dead ends: 1176 [2024-12-02 14:51:16,491 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-12-02 14:51:16,492 INFO L435 NwaCegarLoop]: 207 mSDtfsCounter, 132 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:51:16,492 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 931 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 14:51:16,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2024-12-02 14:51:16,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1050. [2024-12-02 14:51:16,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 970 states have (on average 1.422680412371134) internal successors, (1380), 971 states have internal predecessors, (1380), 68 states have call successors, (68), 11 states have call predecessors, (68), 11 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-12-02 14:51:16,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1516 transitions. [2024-12-02 14:51:16,569 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1516 transitions. Word has length 210 [2024-12-02 14:51:16,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:51:16,569 INFO L471 AbstractCegarLoop]: Abstraction has 1050 states and 1516 transitions. [2024-12-02 14:51:16,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:51:16,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1516 transitions. [2024-12-02 14:51:16,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-12-02 14:51:16,571 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:51:16,571 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:51:16,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-12-02 14:51:16,571 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:51:16,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:51:16,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1314217329, now seen corresponding path program 1 times [2024-12-02 14:51:16,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:51:16,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958510632] [2024-12-02 14:51:16,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:51:16,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:51:16,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:52:00,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:52:00,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:52:00,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958510632] [2024-12-02 14:52:00,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958510632] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:52:00,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:52:00,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 14:52:00,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046191607] [2024-12-02 14:52:00,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:52:00,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 14:52:00,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:52:00,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 14:52:00,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:52:00,986 INFO L87 Difference]: Start difference. First operand 1050 states and 1516 transitions. Second operand has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:52:02,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:52:02,099 INFO L93 Difference]: Finished difference Result 1242 states and 1755 transitions. [2024-12-02 14:52:02,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 14:52:02,100 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 211 [2024-12-02 14:52:02,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:52:02,102 INFO L225 Difference]: With dead ends: 1242 [2024-12-02 14:52:02,102 INFO L226 Difference]: Without dead ends: 1240 [2024-12-02 14:52:02,102 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-12-02 14:52:02,102 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 197 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 14:52:02,103 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 1191 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 14:52:02,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2024-12-02 14:52:02,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 976. [2024-12-02 14:52:02,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 896 states have (on average 1.4174107142857142) internal successors, (1270), 897 states have internal predecessors, (1270), 68 states have call successors, (68), 11 states have call predecessors, (68), 11 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-12-02 14:52:02,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1406 transitions. [2024-12-02 14:52:02,167 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1406 transitions. Word has length 211 [2024-12-02 14:52:02,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:52:02,167 INFO L471 AbstractCegarLoop]: Abstraction has 976 states and 1406 transitions. [2024-12-02 14:52:02,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:52:02,167 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1406 transitions. [2024-12-02 14:52:02,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-12-02 14:52:02,168 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:52:02,168 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:52:02,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-12-02 14:52:02,168 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:52:02,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:52:02,169 INFO L85 PathProgramCache]: Analyzing trace with hash 580379244, now seen corresponding path program 1 times [2024-12-02 14:52:02,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:52:02,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592071367] [2024-12-02 14:52:02,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:52:02,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:52:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:52:47,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 14:52:47,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:52:47,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592071367] [2024-12-02 14:52:47,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592071367] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:52:47,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:52:47,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 14:52:47,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407740977] [2024-12-02 14:52:47,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:52:47,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 14:52:47,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:52:47,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 14:52:47,908 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-12-02 14:52:47,908 INFO L87 Difference]: Start difference. First operand 976 states and 1406 transitions. Second operand has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:52:50,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:52:50,162 INFO L93 Difference]: Finished difference Result 1186 states and 1668 transitions. [2024-12-02 14:52:50,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 14:52:50,162 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 211 [2024-12-02 14:52:50,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:52:50,164 INFO L225 Difference]: With dead ends: 1186 [2024-12-02 14:52:50,164 INFO L226 Difference]: Without dead ends: 1184 [2024-12-02 14:52:50,164 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2024-12-02 14:52:50,165 INFO L435 NwaCegarLoop]: 223 mSDtfsCounter, 201 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 14:52:50,165 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 1518 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 14:52:50,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2024-12-02 14:52:50,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 896. [2024-12-02 14:52:50,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 816 states have (on average 1.411764705882353) internal successors, (1152), 817 states have internal predecessors, (1152), 68 states have call successors, (68), 11 states have call predecessors, (68), 11 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-12-02 14:52:50,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1288 transitions. [2024-12-02 14:52:50,247 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1288 transitions. Word has length 211 [2024-12-02 14:52:50,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:52:50,247 INFO L471 AbstractCegarLoop]: Abstraction has 896 states and 1288 transitions. [2024-12-02 14:52:50,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 14:52:50,247 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1288 transitions. [2024-12-02 14:52:50,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-12-02 14:52:50,248 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:52:50,248 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:52:50,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-12-02 14:52:50,248 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:52:50,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:52:50,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1841929544, now seen corresponding path program 1 times [2024-12-02 14:52:50,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:52:50,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087233259] [2024-12-02 14:52:50,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:52:50,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:52:50,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:52:50,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 24 proven. 66 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2024-12-02 14:52:50,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:52:50,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087233259] [2024-12-02 14:52:50,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087233259] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:52:50,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223802031] [2024-12-02 14:52:50,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:52:50,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:52:50,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc57c4e1-3c25-466c-b50c-e8426e44a3c1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:52:50,649 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc57c4e1-3c25-466c-b50c-e8426e44a3c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:52:50,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc57c4e1-3c25-466c-b50c-e8426e44a3c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 14:52:50,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:52:50,807 INFO L256 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-02 14:52:50,815 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:53:57,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 750 proven. 66 refuted. 0 times theorem prover too weak. 1044 trivial. 0 not checked. [2024-12-02 14:53:57,272 INFO L312 TraceCheckSpWp]: Computing backward predicates...