./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-34.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_45cc7fd6-9bdc-43d5-84e4-1756b161f2ea/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45cc7fd6-9bdc-43d5-84e4-1756b161f2ea/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45cc7fd6-9bdc-43d5-84e4-1756b161f2ea/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45cc7fd6-9bdc-43d5-84e4-1756b161f2ea/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-34.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45cc7fd6-9bdc-43d5-84e4-1756b161f2ea/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45cc7fd6-9bdc-43d5-84e4-1756b161f2ea/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 18633f06cbfcb2d86a624bf68270d8235f3d798bef0344c8b1ebe935e6a76a6f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:19:45,133 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:19:45,206 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45cc7fd6-9bdc-43d5-84e4-1756b161f2ea/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 23:19:45,212 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:19:45,212 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:19:45,239 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:19:45,240 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:19:45,241 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:19:45,241 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:19:45,241 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:19:45,241 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:19:45,242 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:19:45,242 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:19:45,242 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:19:45,242 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:19:45,243 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:19:45,243 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:19:45,243 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:19:45,243 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:19:45,243 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:19:45,244 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:19:45,244 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:19:45,244 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:19:45,244 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:19:45,244 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:19:45,244 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:19:45,245 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:19:45,245 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:19:45,245 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:19:45,245 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:19:45,245 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:19:45,245 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:19:45,245 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:19:45,245 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:19:45,245 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:19:45,246 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:19:45,246 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:19:45,246 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:19:45,246 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:19:45,246 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:19:45,246 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:19:45,246 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:19:45,246 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:19:45,246 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:19:45,246 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:19:45,246 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:19:45,247 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:19:45,247 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:19:45,247 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_45cc7fd6-9bdc-43d5-84e4-1756b161f2ea/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18633f06cbfcb2d86a624bf68270d8235f3d798bef0344c8b1ebe935e6a76a6f [2024-11-27 23:19:45,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:19:45,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:19:45,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:19:45,608 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:19:45,608 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:19:45,610 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45cc7fd6-9bdc-43d5-84e4-1756b161f2ea/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-34.i [2024-11-27 23:19:48,886 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45cc7fd6-9bdc-43d5-84e4-1756b161f2ea/bin/uautomizer-verify-aQ6SnzHsRB/data/672d1633f/18cee616b27f4cc1855f13e80fcac3a7/FLAG3cfaa262f [2024-11-27 23:19:49,246 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:19:49,247 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45cc7fd6-9bdc-43d5-84e4-1756b161f2ea/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-34.i [2024-11-27 23:19:49,259 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45cc7fd6-9bdc-43d5-84e4-1756b161f2ea/bin/uautomizer-verify-aQ6SnzHsRB/data/672d1633f/18cee616b27f4cc1855f13e80fcac3a7/FLAG3cfaa262f [2024-11-27 23:19:49,285 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45cc7fd6-9bdc-43d5-84e4-1756b161f2ea/bin/uautomizer-verify-aQ6SnzHsRB/data/672d1633f/18cee616b27f4cc1855f13e80fcac3a7 [2024-11-27 23:19:49,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:19:49,293 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:19:49,296 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:19:49,296 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:19:49,301 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:19:49,302 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:19:49" (1/1) ... [2024-11-27 23:19:49,306 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22994f32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:19:49, skipping insertion in model container [2024-11-27 23:19:49,306 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:19:49" (1/1) ... [2024-11-27 23:19:49,344 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:19:49,550 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_45cc7fd6-9bdc-43d5-84e4-1756b161f2ea/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-34.i[919,932] [2024-11-27 23:19:49,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:19:49,666 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:19:49,680 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_45cc7fd6-9bdc-43d5-84e4-1756b161f2ea/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-34.i[919,932] [2024-11-27 23:19:49,737 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:19:49,775 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:19:49,776 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:19:49 WrapperNode [2024-11-27 23:19:49,777 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:19:49,779 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:19:49,779 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:19:49,780 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:19:49,795 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:19:49" (1/1) ... [2024-11-27 23:19:49,812 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:19:49" (1/1) ... [2024-11-27 23:19:49,890 INFO L138 Inliner]: procedures = 26, calls = 46, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 265 [2024-11-27 23:19:49,894 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:19:49,895 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:19:49,895 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:19:49,895 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:19:49,907 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:19:49" (1/1) ... [2024-11-27 23:19:49,907 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:19:49" (1/1) ... [2024-11-27 23:19:49,912 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:19:49" (1/1) ... [2024-11-27 23:19:49,935 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 23:19:49,936 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:19:49" (1/1) ... [2024-11-27 23:19:49,936 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:19:49" (1/1) ... [2024-11-27 23:19:49,956 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:19:49" (1/1) ... [2024-11-27 23:19:49,958 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:19:49" (1/1) ... [2024-11-27 23:19:49,966 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:19:49" (1/1) ... [2024-11-27 23:19:49,974 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:19:49" (1/1) ... [2024-11-27 23:19:49,976 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:19:49" (1/1) ... [2024-11-27 23:19:49,986 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:19:49,987 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:19:49,987 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:19:49,987 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:19:49,988 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:19:49" (1/1) ... [2024-11-27 23:19:49,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:19:50,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45cc7fd6-9bdc-43d5-84e4-1756b161f2ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:19:50,026 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45cc7fd6-9bdc-43d5-84e4-1756b161f2ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:19:50,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45cc7fd6-9bdc-43d5-84e4-1756b161f2ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:19:50,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:19:50,065 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 23:19:50,065 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 23:19:50,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:19:50,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:19:50,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:19:50,180 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:19:50,182 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:19:50,923 INFO L? ?]: Removed 30 outVars from TransFormulas that were not future-live. [2024-11-27 23:19:50,923 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:19:50,937 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:19:50,937 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 23:19:50,938 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:19:50 BoogieIcfgContainer [2024-11-27 23:19:50,938 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:19:50,941 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:19:50,941 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:19:50,947 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:19:50,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:19:49" (1/3) ... [2024-11-27 23:19:50,948 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef31193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:19:50, skipping insertion in model container [2024-11-27 23:19:50,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:19:49" (2/3) ... [2024-11-27 23:19:50,949 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef31193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:19:50, skipping insertion in model container [2024-11-27 23:19:50,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:19:50" (3/3) ... [2024-11-27 23:19:50,950 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-cn_file-34.i [2024-11-27 23:19:50,970 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:19:50,972 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pe-cn_file-34.i that has 2 procedures, 112 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 23:19:51,059 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:19:51,079 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;@29b87626, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:19:51,080 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 23:19:51,086 INFO L276 IsEmpty]: Start isEmpty. Operand has 112 states, 76 states have (on average 1.4736842105263157) internal successors, (112), 77 states have internal predecessors, (112), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-27 23:19:51,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-11-27 23:19:51,107 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:19:51,108 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:19:51,108 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:19:51,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:19:51,115 INFO L85 PathProgramCache]: Analyzing trace with hash -852387863, now seen corresponding path program 1 times [2024-11-27 23:19:51,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:19:51,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855154810] [2024-11-27 23:19:51,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:19:51,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:19:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:19:51,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2024-11-27 23:19:51,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:19:51,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855154810] [2024-11-27 23:19:51,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855154810] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:19:51,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751584657] [2024-11-27 23:19:51,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:19:51,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:19:51,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45cc7fd6-9bdc-43d5-84e4-1756b161f2ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:19:51,663 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45cc7fd6-9bdc-43d5-84e4-1756b161f2ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:19:51,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45cc7fd6-9bdc-43d5-84e4-1756b161f2ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:19:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:19:51,947 INFO L256 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 23:19:51,964 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:19:52,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2024-11-27 23:19:52,006 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:19:52,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751584657] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:19:52,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:19:52,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-27 23:19:52,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797175419] [2024-11-27 23:19:52,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:19:52,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 23:19:52,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:19:52,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 23:19:52,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:19:52,051 INFO L87 Difference]: Start difference. First operand has 112 states, 76 states have (on average 1.4736842105263157) internal successors, (112), 77 states have internal predecessors, (112), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) 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, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-27 23:19:52,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:19:52,144 INFO L93 Difference]: Finished difference Result 217 states and 383 transitions. [2024-11-27 23:19:52,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 23:19:52,147 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, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) Word has length 212 [2024-11-27 23:19:52,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:19:52,159 INFO L225 Difference]: With dead ends: 217 [2024-11-27 23:19:52,159 INFO L226 Difference]: Without dead ends: 108 [2024-11-27 23:19:52,164 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:19:52,169 INFO L435 NwaCegarLoop]: 171 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, 171 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:19:52,170 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:19:52,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-27 23:19:52,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2024-11-27 23:19:52,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 73 states have (on average 1.4383561643835616) internal successors, (105), 73 states have internal predecessors, (105), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-27 23:19:52,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 171 transitions. [2024-11-27 23:19:52,248 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 171 transitions. Word has length 212 [2024-11-27 23:19:52,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:19:52,249 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 171 transitions. [2024-11-27 23:19:52,249 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, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-27 23:19:52,249 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 171 transitions. [2024-11-27 23:19:52,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-11-27 23:19:52,261 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:19:52,262 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:19:52,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45cc7fd6-9bdc-43d5-84e4-1756b161f2ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 23:19:52,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45cc7fd6-9bdc-43d5-84e4-1756b161f2ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-27 23:19:52,463 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:19:52,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:19:52,464 INFO L85 PathProgramCache]: Analyzing trace with hash 413720035, now seen corresponding path program 1 times [2024-11-27 23:19:52,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:19:52,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044434324] [2024-11-27 23:19:52,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:19:52,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:19:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:19:53,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:19:53,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:19:53,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044434324] [2024-11-27 23:19:53,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044434324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:19:53,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:19:53,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:19:53,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961574034] [2024-11-27 23:19:53,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:19:53,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:19:53,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:19:53,607 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:19:53,607 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:19:53,607 INFO L87 Difference]: Start difference. First operand 108 states and 171 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, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:19:53,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:19:53,936 INFO L93 Difference]: Finished difference Result 358 states and 571 transitions. [2024-11-27 23:19:53,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:19:53,937 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, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 212 [2024-11-27 23:19:53,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:19:53,946 INFO L225 Difference]: With dead ends: 358 [2024-11-27 23:19:53,946 INFO L226 Difference]: Without dead ends: 253 [2024-11-27 23:19:53,947 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:19:53,948 INFO L435 NwaCegarLoop]: 225 mSDtfsCounter, 178 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:19:53,952 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 550 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:19:53,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-27 23:19:54,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 213. [2024-11-27 23:19:54,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 144 states have (on average 1.4375) internal successors, (207), 144 states have internal predecessors, (207), 66 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-27 23:19:54,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 339 transitions. [2024-11-27 23:19:54,035 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 339 transitions. Word has length 212 [2024-11-27 23:19:54,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:19:54,036 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 339 transitions. [2024-11-27 23:19:54,036 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, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:19:54,036 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 339 transitions. [2024-11-27 23:19:54,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-11-27 23:19:54,043 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:19:54,043 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:19:54,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:19:54,045 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:19:54,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:19:54,046 INFO L85 PathProgramCache]: Analyzing trace with hash 297199322, now seen corresponding path program 1 times [2024-11-27 23:19:54,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:19:54,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446891778] [2024-11-27 23:19:54,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:19:54,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:19:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:19:54,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:19:54,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:19:54,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446891778] [2024-11-27 23:19:54,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446891778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:19:54,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:19:54,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:19:54,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678147901] [2024-11-27 23:19:54,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:19:54,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:19:54,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:19:54,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:19:54,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:19:54,629 INFO L87 Difference]: Start difference. First operand 213 states and 339 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:19:55,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:19:55,248 INFO L93 Difference]: Finished difference Result 628 states and 1000 transitions. [2024-11-27 23:19:55,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:19:55,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 213 [2024-11-27 23:19:55,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:19:55,259 INFO L225 Difference]: With dead ends: 628 [2024-11-27 23:19:55,259 INFO L226 Difference]: Without dead ends: 418 [2024-11-27 23:19:55,262 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:19:55,263 INFO L435 NwaCegarLoop]: 270 mSDtfsCounter, 204 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:19:55,263 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 606 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 23:19:55,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2024-11-27 23:19:55,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 217. [2024-11-27 23:19:55,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 148 states have (on average 1.4256756756756757) internal successors, (211), 148 states have internal predecessors, (211), 66 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-27 23:19:55,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 343 transitions. [2024-11-27 23:19:55,372 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 343 transitions. Word has length 213 [2024-11-27 23:19:55,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:19:55,376 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 343 transitions. [2024-11-27 23:19:55,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:19:55,376 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 343 transitions. [2024-11-27 23:19:55,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-11-27 23:19:55,380 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:19:55,381 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:19:55,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 23:19:55,381 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:19:55,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:19:55,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1338569701, now seen corresponding path program 1 times [2024-11-27 23:19:55,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:19:55,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706647508] [2024-11-27 23:19:55,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:19:55,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:19:55,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:10,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:20:10,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:10,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706647508] [2024-11-27 23:20:10,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706647508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:10,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:10,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-27 23:20:10,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996677505] [2024-11-27 23:20:10,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:10,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 23:20:10,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:10,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 23:20:10,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:20:10,727 INFO L87 Difference]: Start difference. First operand 217 states and 343 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:20:15,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:15,126 INFO L93 Difference]: Finished difference Result 830 states and 1307 transitions. [2024-11-27 23:20:15,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 23:20:15,127 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 214 [2024-11-27 23:20:15,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:15,134 INFO L225 Difference]: With dead ends: 830 [2024-11-27 23:20:15,134 INFO L226 Difference]: Without dead ends: 616 [2024-11-27 23:20:15,135 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2024-11-27 23:20:15,136 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 1017 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:15,137 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1017 Valid, 1063 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-27 23:20:15,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2024-11-27 23:20:15,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 422. [2024-11-27 23:20:15,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 319 states have (on average 1.4984326018808778) internal successors, (478), 319 states have internal predecessors, (478), 99 states have call successors, (99), 3 states have call predecessors, (99), 3 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:20:15,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 676 transitions. [2024-11-27 23:20:15,205 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 676 transitions. Word has length 214 [2024-11-27 23:20:15,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:15,205 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 676 transitions. [2024-11-27 23:20:15,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:20:15,206 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 676 transitions. [2024-11-27 23:20:15,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-11-27 23:20:15,209 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:15,209 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:15,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:20:15,210 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:20:15,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:15,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1945280345, now seen corresponding path program 1 times [2024-11-27 23:20:15,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:15,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801827040] [2024-11-27 23:20:15,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:15,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:18,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:20:18,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:18,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801827040] [2024-11-27 23:20:18,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801827040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:18,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:18,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 23:20:18,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322094031] [2024-11-27 23:20:18,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:18,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 23:20:18,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:18,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 23:20:18,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:20:18,381 INFO L87 Difference]: Start difference. First operand 422 states and 676 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, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:20:20,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:20,505 INFO L93 Difference]: Finished difference Result 1023 states and 1658 transitions. [2024-11-27 23:20:20,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 23:20:20,506 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, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 214 [2024-11-27 23:20:20,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:20,511 INFO L225 Difference]: With dead ends: 1023 [2024-11-27 23:20:20,511 INFO L226 Difference]: Without dead ends: 753 [2024-11-27 23:20:20,513 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-11-27 23:20:20,517 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 507 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:20,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 736 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-27 23:20:20,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2024-11-27 23:20:20,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 467. [2024-11-27 23:20:20,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 364 states have (on average 1.4862637362637363) internal successors, (541), 364 states have internal predecessors, (541), 99 states have call successors, (99), 3 states have call predecessors, (99), 3 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:20:20,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 739 transitions. [2024-11-27 23:20:20,587 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 739 transitions. Word has length 214 [2024-11-27 23:20:20,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:20,588 INFO L471 AbstractCegarLoop]: Abstraction has 467 states and 739 transitions. [2024-11-27 23:20:20,588 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, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:20:20,588 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 739 transitions. [2024-11-27 23:20:20,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-11-27 23:20:20,591 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:20,592 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:20,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 23:20:20,592 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:20:20,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:20,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1935329241, now seen corresponding path program 1 times [2024-11-27 23:20:20,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:20,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871086956] [2024-11-27 23:20:20,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:20,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:23,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:20:23,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:23,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871086956] [2024-11-27 23:20:23,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871086956] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:23,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:23,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 23:20:23,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354712322] [2024-11-27 23:20:23,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:23,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:20:23,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:23,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:20:23,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:20:23,567 INFO L87 Difference]: Start difference. First operand 467 states and 739 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-27 23:20:26,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:26,538 INFO L93 Difference]: Finished difference Result 937 states and 1481 transitions. [2024-11-27 23:20:26,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 23:20:26,539 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 214 [2024-11-27 23:20:26,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:26,544 INFO L225 Difference]: With dead ends: 937 [2024-11-27 23:20:26,545 INFO L226 Difference]: Without dead ends: 689 [2024-11-27 23:20:26,546 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-11-27 23:20:26,547 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 808 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:26,547 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [808 Valid, 743 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-27 23:20:26,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2024-11-27 23:20:26,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 567. [2024-11-27 23:20:26,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 464 states have (on average 1.540948275862069) internal successors, (715), 464 states have internal predecessors, (715), 99 states have call successors, (99), 3 states have call predecessors, (99), 3 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:20:26,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 913 transitions. [2024-11-27 23:20:26,620 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 913 transitions. Word has length 214 [2024-11-27 23:20:26,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:26,621 INFO L471 AbstractCegarLoop]: Abstraction has 567 states and 913 transitions. [2024-11-27 23:20:26,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-27 23:20:26,622 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 913 transitions. [2024-11-27 23:20:26,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-11-27 23:20:26,626 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:26,626 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:26,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 23:20:26,627 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:20:26,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:26,628 INFO L85 PathProgramCache]: Analyzing trace with hash 266863690, now seen corresponding path program 1 times [2024-11-27 23:20:26,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:26,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84886111] [2024-11-27 23:20:26,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:26,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:29,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:20:29,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:29,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84886111] [2024-11-27 23:20:29,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84886111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:29,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:29,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:20:29,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889332187] [2024-11-27 23:20:29,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:29,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:20:29,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:29,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:20:29,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:20:29,425 INFO L87 Difference]: Start difference. First operand 567 states and 913 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, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:20:30,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:30,193 INFO L93 Difference]: Finished difference Result 1051 states and 1691 transitions. [2024-11-27 23:20:30,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:20:30,194 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, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 214 [2024-11-27 23:20:30,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:30,200 INFO L225 Difference]: With dead ends: 1051 [2024-11-27 23:20:30,200 INFO L226 Difference]: Without dead ends: 745 [2024-11-27 23:20:30,202 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:20:30,203 INFO L435 NwaCegarLoop]: 154 mSDtfsCounter, 270 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:30,203 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 568 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 23:20:30,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2024-11-27 23:20:30,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 573. [2024-11-27 23:20:30,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 470 states have (on average 1.5297872340425531) internal successors, (719), 470 states have internal predecessors, (719), 99 states have call successors, (99), 3 states have call predecessors, (99), 3 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:20:30,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 917 transitions. [2024-11-27 23:20:30,299 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 917 transitions. Word has length 214 [2024-11-27 23:20:30,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:30,300 INFO L471 AbstractCegarLoop]: Abstraction has 573 states and 917 transitions. [2024-11-27 23:20:30,301 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, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:20:30,301 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 917 transitions. [2024-11-27 23:20:30,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-11-27 23:20:30,305 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:30,305 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:30,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 23:20:30,306 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:20:30,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:30,307 INFO L85 PathProgramCache]: Analyzing trace with hash -915867875, now seen corresponding path program 1 times [2024-11-27 23:20:30,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:30,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393134187] [2024-11-27 23:20:30,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:30,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:30,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:20:30,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:30,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393134187] [2024-11-27 23:20:30,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393134187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:30,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:30,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:20:30,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324775485] [2024-11-27 23:20:30,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:30,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:20:30,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:30,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:20:30,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:20:30,862 INFO L87 Difference]: Start difference. First operand 573 states and 917 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:20:31,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:31,347 INFO L93 Difference]: Finished difference Result 931 states and 1494 transitions. [2024-11-27 23:20:31,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:20:31,348 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 214 [2024-11-27 23:20:31,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:31,355 INFO L225 Difference]: With dead ends: 931 [2024-11-27 23:20:31,355 INFO L226 Difference]: Without dead ends: 543 [2024-11-27 23:20:31,357 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:20:31,358 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 111 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:31,358 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 440 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 23:20:31,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2024-11-27 23:20:31,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 515. [2024-11-27 23:20:31,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 412 states have (on average 1.4927184466019416) internal successors, (615), 412 states have internal predecessors, (615), 99 states have call successors, (99), 3 states have call predecessors, (99), 3 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:20:31,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 813 transitions. [2024-11-27 23:20:31,448 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 813 transitions. Word has length 214 [2024-11-27 23:20:31,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:31,448 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 813 transitions. [2024-11-27 23:20:31,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:20:31,449 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 813 transitions. [2024-11-27 23:20:31,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-27 23:20:31,452 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:31,452 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:31,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 23:20:31,456 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:20:31,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:31,457 INFO L85 PathProgramCache]: Analyzing trace with hash -755010363, now seen corresponding path program 1 times [2024-11-27 23:20:31,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:31,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410506429] [2024-11-27 23:20:31,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:31,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:31,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:35,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:20:35,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:35,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410506429] [2024-11-27 23:20:35,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410506429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:35,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:35,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 23:20:35,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899807710] [2024-11-27 23:20:35,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:35,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 23:20:35,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:35,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 23:20:35,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:20:35,875 INFO L87 Difference]: Start difference. First operand 515 states and 813 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, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:20:38,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:38,370 INFO L93 Difference]: Finished difference Result 1052 states and 1666 transitions. [2024-11-27 23:20:38,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 23:20:38,371 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, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 215 [2024-11-27 23:20:38,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:38,377 INFO L225 Difference]: With dead ends: 1052 [2024-11-27 23:20:38,377 INFO L226 Difference]: Without dead ends: 838 [2024-11-27 23:20:38,379 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2024-11-27 23:20:38,380 INFO L435 NwaCegarLoop]: 199 mSDtfsCounter, 644 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:38,380 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 636 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 23:20:38,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2024-11-27 23:20:38,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 611. [2024-11-27 23:20:38,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 506 states have (on average 1.5158102766798418) internal successors, (767), 506 states have internal predecessors, (767), 99 states have call successors, (99), 5 states have call predecessors, (99), 5 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:20:38,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 965 transitions. [2024-11-27 23:20:38,482 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 965 transitions. Word has length 215 [2024-11-27 23:20:38,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:38,483 INFO L471 AbstractCegarLoop]: Abstraction has 611 states and 965 transitions. [2024-11-27 23:20:38,484 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, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:20:38,484 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 965 transitions. [2024-11-27 23:20:38,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-27 23:20:38,489 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:38,489 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:38,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 23:20:38,489 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:20:38,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:38,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1384642607, now seen corresponding path program 1 times [2024-11-27 23:20:38,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:38,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017040953] [2024-11-27 23:20:38,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:38,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:38,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:46,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:20:46,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:46,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017040953] [2024-11-27 23:20:46,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017040953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:46,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:46,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-27 23:20:46,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926938408] [2024-11-27 23:20:46,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:46,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 23:20:46,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:46,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 23:20:46,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:20:46,194 INFO L87 Difference]: Start difference. First operand 611 states and 965 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:20:49,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:49,914 INFO L93 Difference]: Finished difference Result 1013 states and 1588 transitions. [2024-11-27 23:20:49,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 23:20:49,915 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), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 215 [2024-11-27 23:20:49,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:49,918 INFO L225 Difference]: With dead ends: 1013 [2024-11-27 23:20:49,919 INFO L226 Difference]: Without dead ends: 763 [2024-11-27 23:20:49,920 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2024-11-27 23:20:49,921 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 683 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:49,921 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 1001 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-27 23:20:49,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2024-11-27 23:20:50,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 643. [2024-11-27 23:20:50,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 538 states have (on average 1.5223048327137547) internal successors, (819), 538 states have internal predecessors, (819), 99 states have call successors, (99), 5 states have call predecessors, (99), 5 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:20:50,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1017 transitions. [2024-11-27 23:20:50,015 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1017 transitions. Word has length 215 [2024-11-27 23:20:50,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:50,016 INFO L471 AbstractCegarLoop]: Abstraction has 643 states and 1017 transitions. [2024-11-27 23:20:50,016 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), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:20:50,016 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1017 transitions. [2024-11-27 23:20:50,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-27 23:20:50,020 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:50,020 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:50,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 23:20:50,021 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:20:50,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:50,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1889256335, now seen corresponding path program 1 times [2024-11-27 23:20:50,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:50,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664616076] [2024-11-27 23:20:50,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:50,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:58,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:20:58,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:58,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664616076] [2024-11-27 23:20:58,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664616076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:58,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:58,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-27 23:20:58,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979450366] [2024-11-27 23:20:58,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:58,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 23:20:58,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:58,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 23:20:58,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-27 23:20:58,086 INFO L87 Difference]: Start difference. First operand 643 states and 1017 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:21:01,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:01,780 INFO L93 Difference]: Finished difference Result 1321 states and 2083 transitions. [2024-11-27 23:21:01,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 23:21:01,781 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 215 [2024-11-27 23:21:01,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:01,786 INFO L225 Difference]: With dead ends: 1321 [2024-11-27 23:21:01,786 INFO L226 Difference]: Without dead ends: 794 [2024-11-27 23:21:01,788 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2024-11-27 23:21:01,789 INFO L435 NwaCegarLoop]: 223 mSDtfsCounter, 471 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 1335 SdHoareTripleChecker+Invalid, 1167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:01,789 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 1335 Invalid, 1167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-27 23:21:01,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2024-11-27 23:21:01,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 674. [2024-11-27 23:21:01,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 569 states have (on average 1.5289982425307558) internal successors, (870), 569 states have internal predecessors, (870), 99 states have call successors, (99), 5 states have call predecessors, (99), 5 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:21:01,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1068 transitions. [2024-11-27 23:21:01,890 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1068 transitions. Word has length 215 [2024-11-27 23:21:01,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:01,891 INFO L471 AbstractCegarLoop]: Abstraction has 674 states and 1068 transitions. [2024-11-27 23:21:01,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:21:01,892 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1068 transitions. [2024-11-27 23:21:01,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-27 23:21:01,894 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:01,894 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:01,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 23:21:01,895 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:21:01,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:01,896 INFO L85 PathProgramCache]: Analyzing trace with hash 402668432, now seen corresponding path program 1 times [2024-11-27 23:21:01,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:01,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033817340] [2024-11-27 23:21:01,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:01,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:02,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:19,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:21:19,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:19,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033817340] [2024-11-27 23:21:19,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033817340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:19,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:21:19,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-27 23:21:19,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009955305] [2024-11-27 23:21:19,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:19,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 23:21:19,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:19,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 23:21:19,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-27 23:21:19,960 INFO L87 Difference]: Start difference. First operand 674 states and 1068 transitions. Second operand has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:21:25,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:25,575 INFO L93 Difference]: Finished difference Result 1046 states and 1632 transitions. [2024-11-27 23:21:25,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-27 23:21:25,575 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 216 [2024-11-27 23:21:25,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:25,580 INFO L225 Difference]: With dead ends: 1046 [2024-11-27 23:21:25,580 INFO L226 Difference]: Without dead ends: 786 [2024-11-27 23:21:25,582 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=209, Invalid=721, Unknown=0, NotChecked=0, Total=930 [2024-11-27 23:21:25,583 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 538 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 1303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:25,583 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 1134 Invalid, 1303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-27 23:21:25,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2024-11-27 23:21:25,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 634. [2024-11-27 23:21:25,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 529 states have (on average 1.5236294896030245) internal successors, (806), 529 states have internal predecessors, (806), 99 states have call successors, (99), 5 states have call predecessors, (99), 5 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:21:25,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 1004 transitions. [2024-11-27 23:21:25,661 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 1004 transitions. Word has length 216 [2024-11-27 23:21:25,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:25,662 INFO L471 AbstractCegarLoop]: Abstraction has 634 states and 1004 transitions. [2024-11-27 23:21:25,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:21:25,663 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 1004 transitions. [2024-11-27 23:21:25,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-27 23:21:25,665 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:25,665 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:25,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 23:21:25,665 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:21:25,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:25,666 INFO L85 PathProgramCache]: Analyzing trace with hash -618399922, now seen corresponding path program 1 times [2024-11-27 23:21:25,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:25,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514999738] [2024-11-27 23:21:25,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:25,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:50,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:21:50,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:50,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514999738] [2024-11-27 23:21:50,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514999738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:21:50,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:21:50,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-27 23:21:50,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364824956] [2024-11-27 23:21:50,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:21:50,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 23:21:50,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:50,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 23:21:50,844 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-27 23:21:50,844 INFO L87 Difference]: Start difference. First operand 634 states and 1004 transitions. Second operand has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:21:54,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:54,379 INFO L93 Difference]: Finished difference Result 980 states and 1527 transitions. [2024-11-27 23:21:54,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 23:21:54,380 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 216 [2024-11-27 23:21:54,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:54,383 INFO L225 Difference]: With dead ends: 980 [2024-11-27 23:21:54,384 INFO L226 Difference]: Without dead ends: 696 [2024-11-27 23:21:54,385 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2024-11-27 23:21:54,386 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 316 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 1242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:54,386 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 1118 Invalid, 1242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-27 23:21:54,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2024-11-27 23:21:54,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 604. [2024-11-27 23:21:54,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 499 states have (on average 1.5110220440881763) internal successors, (754), 499 states have internal predecessors, (754), 99 states have call successors, (99), 5 states have call predecessors, (99), 5 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:21:54,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 952 transitions. [2024-11-27 23:21:54,465 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 952 transitions. Word has length 216 [2024-11-27 23:21:54,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:54,466 INFO L471 AbstractCegarLoop]: Abstraction has 604 states and 952 transitions. [2024-11-27 23:21:54,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:21:54,466 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 952 transitions. [2024-11-27 23:21:54,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-27 23:21:54,468 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:54,469 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:54,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 23:21:54,469 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:21:54,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:54,470 INFO L85 PathProgramCache]: Analyzing trace with hash -939177892, now seen corresponding path program 1 times [2024-11-27 23:21:54,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:54,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775324247] [2024-11-27 23:21:54,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:21:54,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:54,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:03,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:22:03,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:22:03,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775324247] [2024-11-27 23:22:03,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775324247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:22:03,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:22:03,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-27 23:22:03,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783700705] [2024-11-27 23:22:03,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:22:03,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-27 23:22:03,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:22:03,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-27 23:22:03,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-11-27 23:22:03,714 INFO L87 Difference]: Start difference. First operand 604 states and 952 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:22:14,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:14,482 INFO L93 Difference]: Finished difference Result 1012 states and 1584 transitions. [2024-11-27 23:22:14,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 23:22:14,483 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 216 [2024-11-27 23:22:14,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:14,487 INFO L225 Difference]: With dead ends: 1012 [2024-11-27 23:22:14,488 INFO L226 Difference]: Without dead ends: 762 [2024-11-27 23:22:14,489 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=206, Invalid=606, Unknown=0, NotChecked=0, Total=812 [2024-11-27 23:22:14,490 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 657 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 1418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:14,490 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 1284 Invalid, 1418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 1175 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-27 23:22:14,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2024-11-27 23:22:14,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 604. [2024-11-27 23:22:14,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 499 states have (on average 1.5110220440881763) internal successors, (754), 499 states have internal predecessors, (754), 99 states have call successors, (99), 5 states have call predecessors, (99), 5 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:22:14,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 952 transitions. [2024-11-27 23:22:14,576 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 952 transitions. Word has length 216 [2024-11-27 23:22:14,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:14,577 INFO L471 AbstractCegarLoop]: Abstraction has 604 states and 952 transitions. [2024-11-27 23:22:14,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:22:14,577 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 952 transitions. [2024-11-27 23:22:14,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-27 23:22:14,579 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:14,580 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:14,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 23:22:14,580 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:22:14,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:14,581 INFO L85 PathProgramCache]: Analyzing trace with hash -949128996, now seen corresponding path program 1 times [2024-11-27 23:22:14,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:22:14,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007789835] [2024-11-27 23:22:14,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:14,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:22:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:19,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:22:19,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:22:19,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007789835] [2024-11-27 23:22:19,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007789835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:22:19,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:22:19,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-27 23:22:19,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600697689] [2024-11-27 23:22:19,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:22:19,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 23:22:19,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:22:19,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 23:22:19,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:22:19,149 INFO L87 Difference]: Start difference. First operand 604 states and 952 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:22:23,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:23,462 INFO L93 Difference]: Finished difference Result 1416 states and 2230 transitions. [2024-11-27 23:22:23,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 23:22:23,463 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 216 [2024-11-27 23:22:23,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:23,468 INFO L225 Difference]: With dead ends: 1416 [2024-11-27 23:22:23,469 INFO L226 Difference]: Without dead ends: 1009 [2024-11-27 23:22:23,470 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2024-11-27 23:22:23,471 INFO L435 NwaCegarLoop]: 195 mSDtfsCounter, 683 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 1311 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:23,472 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 1277 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1311 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-27 23:22:23,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2024-11-27 23:22:23,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 632. [2024-11-27 23:22:23,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 527 states have (on average 1.4990512333965844) internal successors, (790), 527 states have internal predecessors, (790), 99 states have call successors, (99), 5 states have call predecessors, (99), 5 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:22:23,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 988 transitions. [2024-11-27 23:22:23,593 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 988 transitions. Word has length 216 [2024-11-27 23:22:23,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:23,594 INFO L471 AbstractCegarLoop]: Abstraction has 632 states and 988 transitions. [2024-11-27 23:22:23,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:22:23,594 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 988 transitions. [2024-11-27 23:22:23,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-27 23:22:23,598 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:23,598 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:23,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 23:22:23,598 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:22:23,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:23,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1960246246, now seen corresponding path program 1 times [2024-11-27 23:22:23,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:22:23,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905957926] [2024-11-27 23:22:23,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:23,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:22:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:33,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:22:33,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:22:33,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905957926] [2024-11-27 23:22:33,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905957926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:22:33,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:22:33,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-27 23:22:33,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439169213] [2024-11-27 23:22:33,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:22:33,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-27 23:22:33,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:22:33,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-27 23:22:33,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2024-11-27 23:22:33,351 INFO L87 Difference]: Start difference. First operand 632 states and 988 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:23:01,436 WARN L286 SmtUtils]: Spent 15.18s on a formula simplification. DAG size of input: 222 DAG size of output: 183 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 23:23:01,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:23:01,570 INFO L93 Difference]: Finished difference Result 1126 states and 1731 transitions. [2024-11-27 23:23:01,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 23:23:01,571 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 216 [2024-11-27 23:23:01,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:23:01,573 INFO L225 Difference]: With dead ends: 1126 [2024-11-27 23:23:01,573 INFO L226 Difference]: Without dead ends: 872 [2024-11-27 23:23:01,574 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 25.7s TimeCoverageRelationStatistics Valid=204, Invalid=608, Unknown=0, NotChecked=0, Total=812 [2024-11-27 23:23:01,575 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 696 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 1447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:23:01,575 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 1327 Invalid, 1447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-11-27 23:23:01,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2024-11-27 23:23:01,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 670. [2024-11-27 23:23:01,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 565 states have (on average 1.5044247787610618) internal successors, (850), 565 states have internal predecessors, (850), 99 states have call successors, (99), 5 states have call predecessors, (99), 5 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:23:01,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 1048 transitions. [2024-11-27 23:23:01,674 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 1048 transitions. Word has length 216 [2024-11-27 23:23:01,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:23:01,676 INFO L471 AbstractCegarLoop]: Abstraction has 670 states and 1048 transitions. [2024-11-27 23:23:01,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:23:01,676 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1048 transitions. [2024-11-27 23:23:01,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-27 23:23:01,678 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:23:01,678 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:01,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 23:23:01,679 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:23:01,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:01,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1869175516, now seen corresponding path program 1 times [2024-11-27 23:23:01,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:01,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004115789] [2024-11-27 23:23:01,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:01,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:01,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:34,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:23:34,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:34,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004115789] [2024-11-27 23:23:34,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004115789] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:23:34,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:23:34,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-27 23:23:34,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358478125] [2024-11-27 23:23:34,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:23:34,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 23:23:34,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:34,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 23:23:34,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:23:34,272 INFO L87 Difference]: Start difference. First operand 670 states and 1048 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-27 23:23:36,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:23:36,407 INFO L93 Difference]: Finished difference Result 1114 states and 1719 transitions. [2024-11-27 23:23:36,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 23:23:36,407 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 217 [2024-11-27 23:23:36,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:23:36,413 INFO L225 Difference]: With dead ends: 1114 [2024-11-27 23:23:36,413 INFO L226 Difference]: Without dead ends: 1112 [2024-11-27 23:23:36,414 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=131, Invalid=421, Unknown=0, NotChecked=0, Total=552 [2024-11-27 23:23:36,415 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 612 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 1285 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:23:36,415 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 1285 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 23:23:36,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2024-11-27 23:23:36,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 781. [2024-11-27 23:23:36,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 676 states have (on average 1.507396449704142) internal successors, (1019), 676 states have internal predecessors, (1019), 99 states have call successors, (99), 5 states have call predecessors, (99), 5 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:23:36,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 1217 transitions. [2024-11-27 23:23:36,536 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 1217 transitions. Word has length 217 [2024-11-27 23:23:36,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:23:36,537 INFO L471 AbstractCegarLoop]: Abstraction has 781 states and 1217 transitions. [2024-11-27 23:23:36,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-27 23:23:36,538 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 1217 transitions. [2024-11-27 23:23:36,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-27 23:23:36,540 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:23:36,540 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:36,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-27 23:23:36,541 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:23:36,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:36,541 INFO L85 PathProgramCache]: Analyzing trace with hash 54052518, now seen corresponding path program 1 times [2024-11-27 23:23:36,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:36,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607150381] [2024-11-27 23:23:36,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:36,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:36,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:05,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:24:05,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:05,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607150381] [2024-11-27 23:24:05,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607150381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:05,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:24:05,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-27 23:24:05,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559889600] [2024-11-27 23:24:05,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:05,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 23:24:05,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:05,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 23:24:05,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:24:05,616 INFO L87 Difference]: Start difference. First operand 781 states and 1217 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-27 23:24:08,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:08,118 INFO L93 Difference]: Finished difference Result 1160 states and 1789 transitions. [2024-11-27 23:24:08,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 23:24:08,119 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 217 [2024-11-27 23:24:08,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:08,123 INFO L225 Difference]: With dead ends: 1160 [2024-11-27 23:24:08,123 INFO L226 Difference]: Without dead ends: 1158 [2024-11-27 23:24:08,123 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2024-11-27 23:24:08,124 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 493 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:08,124 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 1224 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-27 23:24:08,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2024-11-27 23:24:08,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 888. [2024-11-27 23:24:08,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 888 states, 783 states have (on average 1.5019157088122606) internal successors, (1176), 783 states have internal predecessors, (1176), 99 states have call successors, (99), 5 states have call predecessors, (99), 5 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:24:08,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1374 transitions. [2024-11-27 23:24:08,247 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1374 transitions. Word has length 217 [2024-11-27 23:24:08,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:08,247 INFO L471 AbstractCegarLoop]: Abstraction has 888 states and 1374 transitions. [2024-11-27 23:24:08,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-27 23:24:08,248 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1374 transitions. [2024-11-27 23:24:08,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-27 23:24:08,250 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:08,251 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:08,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-27 23:24:08,251 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:24:08,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:08,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1916318690, now seen corresponding path program 1 times [2024-11-27 23:24:08,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:08,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154177479] [2024-11-27 23:24:08,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:08,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:08,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:08,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:24:08,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:08,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154177479] [2024-11-27 23:24:08,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154177479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:08,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:24:08,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:24:08,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430748756] [2024-11-27 23:24:08,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:08,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:24:08,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:08,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:24:08,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:24:08,520 INFO L87 Difference]: Start difference. First operand 888 states and 1374 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:24:08,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:08,891 INFO L93 Difference]: Finished difference Result 1464 states and 2281 transitions. [2024-11-27 23:24:08,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:24:08,892 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 217 [2024-11-27 23:24:08,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:08,897 INFO L225 Difference]: With dead ends: 1464 [2024-11-27 23:24:08,897 INFO L226 Difference]: Without dead ends: 893 [2024-11-27 23:24:08,899 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:24:08,899 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 122 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:08,900 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 651 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:24:08,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2024-11-27 23:24:09,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 869. [2024-11-27 23:24:09,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 764 states have (on average 1.5052356020942408) internal successors, (1150), 764 states have internal predecessors, (1150), 99 states have call successors, (99), 5 states have call predecessors, (99), 5 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:24:09,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1348 transitions. [2024-11-27 23:24:09,021 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1348 transitions. Word has length 217 [2024-11-27 23:24:09,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:09,021 INFO L471 AbstractCegarLoop]: Abstraction has 869 states and 1348 transitions. [2024-11-27 23:24:09,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:24:09,022 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1348 transitions. [2024-11-27 23:24:09,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-27 23:24:09,024 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:09,025 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:09,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-27 23:24:09,025 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:24:09,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:09,026 INFO L85 PathProgramCache]: Analyzing trace with hash -923721274, now seen corresponding path program 1 times [2024-11-27 23:24:09,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:09,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801027692] [2024-11-27 23:24:09,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:09,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:14,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:24:14,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:14,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801027692] [2024-11-27 23:24:14,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801027692] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:14,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:24:14,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-27 23:24:14,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766593683] [2024-11-27 23:24:14,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:14,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 23:24:14,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:14,334 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 23:24:14,334 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:24:14,335 INFO L87 Difference]: Start difference. First operand 869 states and 1348 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:24:18,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:18,533 INFO L93 Difference]: Finished difference Result 1534 states and 2394 transitions. [2024-11-27 23:24:18,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 23:24:18,534 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 217 [2024-11-27 23:24:18,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:18,538 INFO L225 Difference]: With dead ends: 1534 [2024-11-27 23:24:18,539 INFO L226 Difference]: Without dead ends: 1276 [2024-11-27 23:24:18,540 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2024-11-27 23:24:18,541 INFO L435 NwaCegarLoop]: 214 mSDtfsCounter, 395 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:18,541 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 954 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-27 23:24:18,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2024-11-27 23:24:18,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 969. [2024-11-27 23:24:18,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 864 states have (on average 1.5219907407407407) internal successors, (1315), 864 states have internal predecessors, (1315), 99 states have call successors, (99), 5 states have call predecessors, (99), 5 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:24:18,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1513 transitions. [2024-11-27 23:24:18,686 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1513 transitions. Word has length 217 [2024-11-27 23:24:18,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:18,686 INFO L471 AbstractCegarLoop]: Abstraction has 969 states and 1513 transitions. [2024-11-27 23:24:18,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:24:18,687 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1513 transitions. [2024-11-27 23:24:18,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-27 23:24:18,689 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:18,689 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:18,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-27 23:24:18,689 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:24:18,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:18,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1944789628, now seen corresponding path program 1 times [2024-11-27 23:24:18,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:18,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095113538] [2024-11-27 23:24:18,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:18,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:23,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:24:23,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:23,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095113538] [2024-11-27 23:24:23,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095113538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:23,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:24:23,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-27 23:24:23,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593406552] [2024-11-27 23:24:23,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:23,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 23:24:23,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:23,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 23:24:23,285 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:24:23,285 INFO L87 Difference]: Start difference. First operand 969 states and 1513 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:24:26,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:26,355 INFO L93 Difference]: Finished difference Result 1638 states and 2534 transitions. [2024-11-27 23:24:26,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 23:24:26,355 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 217 [2024-11-27 23:24:26,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:26,359 INFO L225 Difference]: With dead ends: 1638 [2024-11-27 23:24:26,359 INFO L226 Difference]: Without dead ends: 1284 [2024-11-27 23:24:26,360 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2024-11-27 23:24:26,361 INFO L435 NwaCegarLoop]: 240 mSDtfsCounter, 340 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:26,361 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 1423 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-27 23:24:26,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2024-11-27 23:24:26,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 959. [2024-11-27 23:24:26,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 854 states have (on average 1.5163934426229508) internal successors, (1295), 854 states have internal predecessors, (1295), 99 states have call successors, (99), 5 states have call predecessors, (99), 5 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:24:26,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1493 transitions. [2024-11-27 23:24:26,455 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1493 transitions. Word has length 217 [2024-11-27 23:24:26,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:26,456 INFO L471 AbstractCegarLoop]: Abstraction has 959 states and 1493 transitions. [2024-11-27 23:24:26,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:24:26,456 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1493 transitions. [2024-11-27 23:24:26,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-27 23:24:26,459 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:26,459 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:26,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-27 23:24:26,459 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:24:26,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:26,460 INFO L85 PathProgramCache]: Analyzing trace with hash -990019744, now seen corresponding path program 1 times [2024-11-27 23:24:26,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:26,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111073548] [2024-11-27 23:24:26,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:26,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:32,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:24:32,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:32,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111073548] [2024-11-27 23:24:32,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111073548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:32,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:24:32,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-27 23:24:32,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620182326] [2024-11-27 23:24:32,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:32,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 23:24:32,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:32,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 23:24:32,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:24:32,083 INFO L87 Difference]: Start difference. First operand 959 states and 1493 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:24:38,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:38,324 INFO L93 Difference]: Finished difference Result 1562 states and 2449 transitions. [2024-11-27 23:24:38,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 23:24:38,325 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 217 [2024-11-27 23:24:38,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:38,331 INFO L225 Difference]: With dead ends: 1562 [2024-11-27 23:24:38,331 INFO L226 Difference]: Without dead ends: 1190 [2024-11-27 23:24:38,333 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2024-11-27 23:24:38,335 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 255 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:38,335 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 1131 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-27 23:24:38,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2024-11-27 23:24:38,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 981. [2024-11-27 23:24:38,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 876 states have (on average 1.523972602739726) internal successors, (1335), 876 states have internal predecessors, (1335), 99 states have call successors, (99), 5 states have call predecessors, (99), 5 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:24:38,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1533 transitions. [2024-11-27 23:24:38,433 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1533 transitions. Word has length 217 [2024-11-27 23:24:38,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:38,434 INFO L471 AbstractCegarLoop]: Abstraction has 981 states and 1533 transitions. [2024-11-27 23:24:38,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:24:38,434 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1533 transitions. [2024-11-27 23:24:38,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-27 23:24:38,437 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:38,437 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:38,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-27 23:24:38,438 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:24:38,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:38,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1214415930, now seen corresponding path program 1 times [2024-11-27 23:24:38,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:38,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089983104] [2024-11-27 23:24:38,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:38,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:14,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:25:14,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:14,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089983104] [2024-11-27 23:25:14,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089983104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:14,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:14,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-27 23:25:14,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11344751] [2024-11-27 23:25:14,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:14,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 23:25:14,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:14,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 23:25:14,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-27 23:25:14,086 INFO L87 Difference]: Start difference. First operand 981 states and 1533 transitions. Second operand has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-27 23:25:18,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:18,360 INFO L93 Difference]: Finished difference Result 1306 states and 2026 transitions. [2024-11-27 23:25:18,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 23:25:18,361 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 218 [2024-11-27 23:25:18,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:18,365 INFO L225 Difference]: With dead ends: 1306 [2024-11-27 23:25:18,365 INFO L226 Difference]: Without dead ends: 1304 [2024-11-27 23:25:18,366 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=169, Invalid=533, Unknown=0, NotChecked=0, Total=702 [2024-11-27 23:25:18,366 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 576 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 1079 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:18,367 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 1333 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1079 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-27 23:25:18,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2024-11-27 23:25:18,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1026. [2024-11-27 23:25:18,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 921 states have (on average 1.5309446254071661) internal successors, (1410), 921 states have internal predecessors, (1410), 99 states have call successors, (99), 5 states have call predecessors, (99), 5 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:25:18,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1608 transitions. [2024-11-27 23:25:18,444 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1608 transitions. Word has length 218 [2024-11-27 23:25:18,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:18,444 INFO L471 AbstractCegarLoop]: Abstraction has 1026 states and 1608 transitions. [2024-11-27 23:25:18,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-27 23:25:18,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1608 transitions. [2024-11-27 23:25:18,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-27 23:25:18,447 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:18,448 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:18,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-27 23:25:18,448 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:18,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:18,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1637117756, now seen corresponding path program 1 times [2024-11-27 23:25:18,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:18,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670989500] [2024-11-27 23:25:18,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:18,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:18,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:25:18,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:18,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670989500] [2024-11-27 23:25:18,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670989500] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:18,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:18,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:25:18,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468698693] [2024-11-27 23:25:18,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:18,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:25:18,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:18,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:25:18,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:25:18,578 INFO L87 Difference]: Start difference. First operand 1026 states and 1608 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:25:18,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:18,683 INFO L93 Difference]: Finished difference Result 1799 states and 2883 transitions. [2024-11-27 23:25:18,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:25:18,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 218 [2024-11-27 23:25:18,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:18,691 INFO L225 Difference]: With dead ends: 1799 [2024-11-27 23:25:18,691 INFO L226 Difference]: Without dead ends: 1251 [2024-11-27 23:25:18,692 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:25:18,693 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 29 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:18,693 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 329 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:25:18,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2024-11-27 23:25:18,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1026. [2024-11-27 23:25:18,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 921 states have (on average 1.514657980456026) internal successors, (1395), 921 states have internal predecessors, (1395), 99 states have call successors, (99), 5 states have call predecessors, (99), 5 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:25:18,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1593 transitions. [2024-11-27 23:25:18,818 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1593 transitions. Word has length 218 [2024-11-27 23:25:18,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:18,819 INFO L471 AbstractCegarLoop]: Abstraction has 1026 states and 1593 transitions. [2024-11-27 23:25:18,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:25:18,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1593 transitions. [2024-11-27 23:25:18,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-27 23:25:18,822 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:18,822 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:18,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-27 23:25:18,822 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:18,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:18,823 INFO L85 PathProgramCache]: Analyzing trace with hash 704942840, now seen corresponding path program 1 times [2024-11-27 23:25:18,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:18,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176746572] [2024-11-27 23:25:18,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:18,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:55,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:25:55,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:55,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176746572] [2024-11-27 23:25:55,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176746572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:55,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:55,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-27 23:25:55,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674537026] [2024-11-27 23:25:55,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:55,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-27 23:25:55,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:55,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-27 23:25:55,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-11-27 23:25:55,215 INFO L87 Difference]: Start difference. First operand 1026 states and 1593 transitions. Second operand has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-27 23:25:59,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:59,014 INFO L93 Difference]: Finished difference Result 1245 states and 1900 transitions. [2024-11-27 23:25:59,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 23:25:59,015 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 218 [2024-11-27 23:25:59,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:59,020 INFO L225 Difference]: With dead ends: 1245 [2024-11-27 23:25:59,021 INFO L226 Difference]: Without dead ends: 1243 [2024-11-27 23:25:59,022 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=164, Invalid=538, Unknown=0, NotChecked=0, Total=702 [2024-11-27 23:25:59,022 INFO L435 NwaCegarLoop]: 154 mSDtfsCounter, 635 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:59,023 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 1193 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-27 23:25:59,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2024-11-27 23:25:59,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1071. [2024-11-27 23:25:59,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 966 states have (on average 1.5186335403726707) internal successors, (1467), 966 states have internal predecessors, (1467), 99 states have call successors, (99), 5 states have call predecessors, (99), 5 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:25:59,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1665 transitions. [2024-11-27 23:25:59,140 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1665 transitions. Word has length 218 [2024-11-27 23:25:59,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:59,140 INFO L471 AbstractCegarLoop]: Abstraction has 1071 states and 1665 transitions. [2024-11-27 23:25:59,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-27 23:25:59,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1665 transitions. [2024-11-27 23:25:59,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-27 23:25:59,143 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:59,143 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:59,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-27 23:25:59,143 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:59,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:59,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1307791405, now seen corresponding path program 1 times [2024-11-27 23:25:59,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:59,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220141233] [2024-11-27 23:25:59,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:59,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:08,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:26:08,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:08,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220141233] [2024-11-27 23:26:08,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220141233] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:26:08,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:26:08,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-27 23:26:08,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378320243] [2024-11-27 23:26:08,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:08,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 23:26:08,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:08,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 23:26:08,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-11-27 23:26:08,129 INFO L87 Difference]: Start difference. First operand 1071 states and 1665 transitions. Second operand has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:26:13,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:13,149 INFO L93 Difference]: Finished difference Result 2029 states and 3183 transitions. [2024-11-27 23:26:13,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 23:26:13,149 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 218 [2024-11-27 23:26:13,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:13,156 INFO L225 Difference]: With dead ends: 2029 [2024-11-27 23:26:13,156 INFO L226 Difference]: Without dead ends: 1621 [2024-11-27 23:26:13,158 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2024-11-27 23:26:13,158 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 441 mSDsluCounter, 1028 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:13,159 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 1163 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-27 23:26:13,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1621 states. [2024-11-27 23:26:13,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1621 to 1079. [2024-11-27 23:26:13,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 974 states have (on average 1.5184804928131417) internal successors, (1479), 974 states have internal predecessors, (1479), 99 states have call successors, (99), 5 states have call predecessors, (99), 5 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:26:13,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1677 transitions. [2024-11-27 23:26:13,288 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1677 transitions. Word has length 218 [2024-11-27 23:26:13,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:13,289 INFO L471 AbstractCegarLoop]: Abstraction has 1079 states and 1677 transitions. [2024-11-27 23:26:13,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:26:13,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1677 transitions. [2024-11-27 23:26:13,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-27 23:26:13,292 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:13,292 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:13,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-27 23:26:13,292 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:26:13,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:13,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1976058641, now seen corresponding path program 1 times [2024-11-27 23:26:13,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:13,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234440642] [2024-11-27 23:26:13,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:13,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:24,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:26:24,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:24,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234440642] [2024-11-27 23:26:24,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234440642] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:26:24,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:26:24,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-27 23:26:24,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012150641] [2024-11-27 23:26:24,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:24,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 23:26:24,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:24,930 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 23:26:24,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-27 23:26:24,930 INFO L87 Difference]: Start difference. First operand 1079 states and 1677 transitions. Second operand has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:26:31,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:31,827 INFO L93 Difference]: Finished difference Result 1881 states and 2944 transitions. [2024-11-27 23:26:31,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 23:26:31,828 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 218 [2024-11-27 23:26:31,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:31,834 INFO L225 Difference]: With dead ends: 1881 [2024-11-27 23:26:31,835 INFO L226 Difference]: Without dead ends: 1473 [2024-11-27 23:26:31,836 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2024-11-27 23:26:31,837 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 647 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:31,837 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 815 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-27 23:26:31,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2024-11-27 23:26:31,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1071. [2024-11-27 23:26:31,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 966 states have (on average 1.5186335403726707) internal successors, (1467), 966 states have internal predecessors, (1467), 99 states have call successors, (99), 5 states have call predecessors, (99), 5 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:26:31,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1665 transitions. [2024-11-27 23:26:31,924 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1665 transitions. Word has length 218 [2024-11-27 23:26:31,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:31,924 INFO L471 AbstractCegarLoop]: Abstraction has 1071 states and 1665 transitions. [2024-11-27 23:26:31,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:26:31,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1665 transitions. [2024-11-27 23:26:31,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-27 23:26:31,926 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:31,926 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:31,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-27 23:26:31,926 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:26:31,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:31,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1966107537, now seen corresponding path program 1 times [2024-11-27 23:26:31,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:31,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191900162] [2024-11-27 23:26:31,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:31,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:32,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:36,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:26:36,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:36,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191900162] [2024-11-27 23:26:36,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191900162] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:26:36,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:26:36,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-27 23:26:36,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216886491] [2024-11-27 23:26:36,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:36,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 23:26:36,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:36,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 23:26:36,596 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:26:36,596 INFO L87 Difference]: Start difference. First operand 1071 states and 1665 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:26:39,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:39,487 INFO L93 Difference]: Finished difference Result 1857 states and 2882 transitions. [2024-11-27 23:26:39,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 23:26:39,487 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 218 [2024-11-27 23:26:39,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:39,493 INFO L225 Difference]: With dead ends: 1857 [2024-11-27 23:26:39,493 INFO L226 Difference]: Without dead ends: 1311 [2024-11-27 23:26:39,495 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2024-11-27 23:26:39,495 INFO L435 NwaCegarLoop]: 179 mSDtfsCounter, 439 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 1060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:39,496 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 1041 Invalid, 1060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-27 23:26:39,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2024-11-27 23:26:39,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1050. [2024-11-27 23:26:39,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 945 states have (on average 1.5153439153439154) internal successors, (1432), 945 states have internal predecessors, (1432), 99 states have call successors, (99), 5 states have call predecessors, (99), 5 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:26:39,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1630 transitions. [2024-11-27 23:26:39,574 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1630 transitions. Word has length 218 [2024-11-27 23:26:39,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:39,575 INFO L471 AbstractCegarLoop]: Abstraction has 1050 states and 1630 transitions. [2024-11-27 23:26:39,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:26:39,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1630 transitions. [2024-11-27 23:26:39,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-27 23:26:39,576 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:39,576 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:39,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-27 23:26:39,576 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:26:39,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:39,577 INFO L85 PathProgramCache]: Analyzing trace with hash 954990287, now seen corresponding path program 1 times [2024-11-27 23:26:39,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:39,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732302077] [2024-11-27 23:26:39,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:39,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:59,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:26:59,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:59,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732302077] [2024-11-27 23:26:59,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732302077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:26:59,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:26:59,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-27 23:26:59,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567556597] [2024-11-27 23:26:59,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:59,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-27 23:26:59,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:59,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-27 23:26:59,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2024-11-27 23:26:59,601 INFO L87 Difference]: Start difference. First operand 1050 states and 1630 transitions. Second operand has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:27:09,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:09,741 INFO L93 Difference]: Finished difference Result 1680 states and 2599 transitions. [2024-11-27 23:27:09,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 23:27:09,742 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 218 [2024-11-27 23:27:09,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:09,745 INFO L225 Difference]: With dead ends: 1680 [2024-11-27 23:27:09,745 INFO L226 Difference]: Without dead ends: 1258 [2024-11-27 23:27:09,746 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=193, Invalid=677, Unknown=0, NotChecked=0, Total=870 [2024-11-27 23:27:09,747 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 593 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 1402 SdHoareTripleChecker+Invalid, 1530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:09,747 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 1402 Invalid, 1530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 1285 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-27 23:27:09,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2024-11-27 23:27:09,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 990. [2024-11-27 23:27:09,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 885 states have (on average 1.5005649717514125) internal successors, (1328), 885 states have internal predecessors, (1328), 99 states have call successors, (99), 5 states have call predecessors, (99), 5 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:27:09,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1526 transitions. [2024-11-27 23:27:09,824 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1526 transitions. Word has length 218 [2024-11-27 23:27:09,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:09,825 INFO L471 AbstractCegarLoop]: Abstraction has 990 states and 1526 transitions. [2024-11-27 23:27:09,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:27:09,825 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1526 transitions. [2024-11-27 23:27:09,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-27 23:27:09,826 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:09,827 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:09,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-27 23:27:09,827 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:09,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:09,827 INFO L85 PathProgramCache]: Analyzing trace with hash 266708664, now seen corresponding path program 1 times [2024-11-27 23:27:09,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:09,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440556994] [2024-11-27 23:27:09,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:09,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:10,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:27:10,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:10,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440556994] [2024-11-27 23:27:10,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440556994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:10,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:10,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 23:27:10,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406871412] [2024-11-27 23:27:10,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:10,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:27:10,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:10,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:27:10,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:27:10,628 INFO L87 Difference]: Start difference. First operand 990 states and 1526 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:27:11,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:11,920 INFO L93 Difference]: Finished difference Result 1505 states and 2315 transitions. [2024-11-27 23:27:11,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:27:11,921 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 219 [2024-11-27 23:27:11,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:11,926 INFO L225 Difference]: With dead ends: 1505 [2024-11-27 23:27:11,926 INFO L226 Difference]: Without dead ends: 1095 [2024-11-27 23:27:11,928 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:27:11,929 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 197 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:11,929 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 628 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 23:27:11,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2024-11-27 23:27:12,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1047. [2024-11-27 23:27:12,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 942 states have (on average 1.4957537154989384) internal successors, (1409), 942 states have internal predecessors, (1409), 99 states have call successors, (99), 5 states have call predecessors, (99), 5 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:27:12,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1607 transitions. [2024-11-27 23:27:12,070 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1607 transitions. Word has length 219 [2024-11-27 23:27:12,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:12,070 INFO L471 AbstractCegarLoop]: Abstraction has 1047 states and 1607 transitions. [2024-11-27 23:27:12,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:27:12,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1607 transitions. [2024-11-27 23:27:12,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-27 23:27:12,073 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:12,073 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:12,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-27 23:27:12,074 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:12,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:12,074 INFO L85 PathProgramCache]: Analyzing trace with hash 225979950, now seen corresponding path program 1 times [2024-11-27 23:27:12,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:12,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24877426] [2024-11-27 23:27:12,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:12,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:12,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:12,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:27:12,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:12,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24877426] [2024-11-27 23:27:12,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24877426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:12,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:12,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:27:12,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138794717] [2024-11-27 23:27:12,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:12,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:27:12,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:12,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:27:12,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:27:12,508 INFO L87 Difference]: Start difference. First operand 1047 states and 1607 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:27:13,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:13,181 INFO L93 Difference]: Finished difference Result 1617 states and 2478 transitions. [2024-11-27 23:27:13,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:27:13,182 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 219 [2024-11-27 23:27:13,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:13,185 INFO L225 Difference]: With dead ends: 1617 [2024-11-27 23:27:13,185 INFO L226 Difference]: Without dead ends: 1082 [2024-11-27 23:27:13,186 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:27:13,187 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 121 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:13,187 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 496 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 23:27:13,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2024-11-27 23:27:13,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 1046. [2024-11-27 23:27:13,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 941 states have (on average 1.4952178533475027) internal successors, (1407), 941 states have internal predecessors, (1407), 99 states have call successors, (99), 5 states have call predecessors, (99), 5 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:27:13,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1605 transitions. [2024-11-27 23:27:13,284 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1605 transitions. Word has length 219 [2024-11-27 23:27:13,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:13,285 INFO L471 AbstractCegarLoop]: Abstraction has 1046 states and 1605 transitions. [2024-11-27 23:27:13,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:27:13,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1605 transitions. [2024-11-27 23:27:13,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-27 23:27:13,287 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:13,287 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:13,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-27 23:27:13,287 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:13,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:13,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1765602180, now seen corresponding path program 1 times [2024-11-27 23:27:13,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:13,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748065114] [2024-11-27 23:27:13,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:13,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:13,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:13,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:27:13,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:13,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748065114] [2024-11-27 23:27:13,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748065114] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:13,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:13,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:27:13,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480472372] [2024-11-27 23:27:13,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:13,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:27:13,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:13,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:27:13,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:27:13,429 INFO L87 Difference]: Start difference. First operand 1046 states and 1605 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:27:13,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:13,620 INFO L93 Difference]: Finished difference Result 1614 states and 2506 transitions. [2024-11-27 23:27:13,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:27:13,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 221 [2024-11-27 23:27:13,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:13,624 INFO L225 Difference]: With dead ends: 1614 [2024-11-27 23:27:13,625 INFO L226 Difference]: Without dead ends: 1080 [2024-11-27 23:27:13,626 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:27:13,626 INFO L435 NwaCegarLoop]: 196 mSDtfsCounter, 52 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:13,627 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 331 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:27:13,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2024-11-27 23:27:13,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 848. [2024-11-27 23:27:13,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 743 states have (on average 1.4804845222072678) internal successors, (1100), 743 states have internal predecessors, (1100), 99 states have call successors, (99), 5 states have call predecessors, (99), 5 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:27:13,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1298 transitions. [2024-11-27 23:27:13,724 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1298 transitions. Word has length 221 [2024-11-27 23:27:13,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:13,724 INFO L471 AbstractCegarLoop]: Abstraction has 848 states and 1298 transitions. [2024-11-27 23:27:13,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:27:13,725 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1298 transitions. [2024-11-27 23:27:13,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-27 23:27:13,726 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:13,726 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:13,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-27 23:27:13,726 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:13,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:13,727 INFO L85 PathProgramCache]: Analyzing trace with hash 57255117, now seen corresponding path program 1 times [2024-11-27 23:27:13,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:13,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210720921] [2024-11-27 23:27:13,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:13,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:14,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:27:14,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:14,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210720921] [2024-11-27 23:27:14,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210720921] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:14,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:14,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 23:27:14,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750419261] [2024-11-27 23:27:14,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:14,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:27:14,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:14,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:27:14,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:27:14,122 INFO L87 Difference]: Start difference. First operand 848 states and 1298 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:27:15,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:15,070 INFO L93 Difference]: Finished difference Result 1559 states and 2398 transitions. [2024-11-27 23:27:15,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:27:15,071 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 222 [2024-11-27 23:27:15,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:15,076 INFO L225 Difference]: With dead ends: 1559 [2024-11-27 23:27:15,076 INFO L226 Difference]: Without dead ends: 1023 [2024-11-27 23:27:15,078 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:27:15,078 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 148 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:15,079 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 810 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 23:27:15,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2024-11-27 23:27:15,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 905. [2024-11-27 23:27:15,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 800 states have (on average 1.47875) internal successors, (1183), 800 states have internal predecessors, (1183), 99 states have call successors, (99), 5 states have call predecessors, (99), 5 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:27:15,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1381 transitions. [2024-11-27 23:27:15,164 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1381 transitions. Word has length 222 [2024-11-27 23:27:15,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:15,165 INFO L471 AbstractCegarLoop]: Abstraction has 905 states and 1381 transitions. [2024-11-27 23:27:15,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:27:15,165 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1381 transitions. [2024-11-27 23:27:15,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-27 23:27:15,167 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:15,168 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:15,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-27 23:27:15,168 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:15,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:15,169 INFO L85 PathProgramCache]: Analyzing trace with hash -2039004690, now seen corresponding path program 1 times [2024-11-27 23:27:15,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:15,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396647550] [2024-11-27 23:27:15,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:15,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:15,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:27:15,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:15,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396647550] [2024-11-27 23:27:15,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396647550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:15,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:15,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 23:27:15,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022216438] [2024-11-27 23:27:15,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:15,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:27:15,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:15,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:27:15,548 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:27:15,549 INFO L87 Difference]: Start difference. First operand 905 states and 1381 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:27:16,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:16,485 INFO L93 Difference]: Finished difference Result 1569 states and 2407 transitions. [2024-11-27 23:27:16,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:27:16,485 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 222 [2024-11-27 23:27:16,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:16,489 INFO L225 Difference]: With dead ends: 1569 [2024-11-27 23:27:16,489 INFO L226 Difference]: Without dead ends: 1025 [2024-11-27 23:27:16,490 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:27:16,490 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 158 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:16,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 817 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 23:27:16,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2024-11-27 23:27:16,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 892. [2024-11-27 23:27:16,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 787 states have (on average 1.4790343074968233) internal successors, (1164), 787 states have internal predecessors, (1164), 99 states have call successors, (99), 5 states have call predecessors, (99), 5 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:27:16,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1362 transitions. [2024-11-27 23:27:16,577 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1362 transitions. Word has length 222 [2024-11-27 23:27:16,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:16,577 INFO L471 AbstractCegarLoop]: Abstraction has 892 states and 1362 transitions. [2024-11-27 23:27:16,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:27:16,577 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1362 transitions. [2024-11-27 23:27:16,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-27 23:27:16,578 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:16,579 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:16,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-27 23:27:16,579 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:16,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:16,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1519085948, now seen corresponding path program 1 times [2024-11-27 23:27:16,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:16,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405505443] [2024-11-27 23:27:16,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:16,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:16,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:16,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:27:16,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:16,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405505443] [2024-11-27 23:27:16,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405505443] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:16,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:16,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:27:16,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727055991] [2024-11-27 23:27:16,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:16,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:27:16,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:16,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:27:16,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:27:16,869 INFO L87 Difference]: Start difference. First operand 892 states and 1362 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:27:17,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:17,464 INFO L93 Difference]: Finished difference Result 1482 states and 2289 transitions. [2024-11-27 23:27:17,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:27:17,464 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 225 [2024-11-27 23:27:17,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:17,468 INFO L225 Difference]: With dead ends: 1482 [2024-11-27 23:27:17,468 INFO L226 Difference]: Without dead ends: 883 [2024-11-27 23:27:17,469 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:27:17,470 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 112 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:17,470 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 516 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 23:27:17,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2024-11-27 23:27:17,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 829. [2024-11-27 23:27:17,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 724 states have (on average 1.4820441988950277) internal successors, (1073), 724 states have internal predecessors, (1073), 99 states have call successors, (99), 5 states have call predecessors, (99), 5 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:27:17,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1271 transitions. [2024-11-27 23:27:17,567 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1271 transitions. Word has length 225 [2024-11-27 23:27:17,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:17,568 INFO L471 AbstractCegarLoop]: Abstraction has 829 states and 1271 transitions. [2024-11-27 23:27:17,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:27:17,568 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1271 transitions. [2024-11-27 23:27:17,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-27 23:27:17,570 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:17,570 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:17,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-27 23:27:17,571 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:17,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:17,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1452938565, now seen corresponding path program 1 times [2024-11-27 23:27:17,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:17,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538440538] [2024-11-27 23:27:17,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:17,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:21,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:27:21,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:21,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538440538] [2024-11-27 23:27:21,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538440538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:21,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:21,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-27 23:27:21,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615683028] [2024-11-27 23:27:21,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:21,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 23:27:21,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:21,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 23:27:21,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-11-27 23:27:21,415 INFO L87 Difference]: Start difference. First operand 829 states and 1271 transitions. Second operand has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:27:25,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:25,409 INFO L93 Difference]: Finished difference Result 1505 states and 2325 transitions. [2024-11-27 23:27:25,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 23:27:25,409 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 225 [2024-11-27 23:27:25,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:25,414 INFO L225 Difference]: With dead ends: 1505 [2024-11-27 23:27:25,414 INFO L226 Difference]: Without dead ends: 969 [2024-11-27 23:27:25,416 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2024-11-27 23:27:25,417 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 550 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:25,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 1248 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-27 23:27:25,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2024-11-27 23:27:25,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 891. [2024-11-27 23:27:25,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 786 states have (on average 1.4898218829516539) internal successors, (1171), 786 states have internal predecessors, (1171), 99 states have call successors, (99), 5 states have call predecessors, (99), 5 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:27:25,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1369 transitions. [2024-11-27 23:27:25,512 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1369 transitions. Word has length 225 [2024-11-27 23:27:25,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:25,513 INFO L471 AbstractCegarLoop]: Abstraction has 891 states and 1369 transitions. [2024-11-27 23:27:25,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:27:25,513 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1369 transitions. [2024-11-27 23:27:25,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-27 23:27:25,515 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:25,515 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:25,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-27 23:27:25,516 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:25,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:25,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1036590397, now seen corresponding path program 1 times [2024-11-27 23:27:25,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:25,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056850124] [2024-11-27 23:27:25,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:25,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:53,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:27:53,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:53,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056850124] [2024-11-27 23:27:53,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056850124] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:53,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:53,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-27 23:27:53,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372037000] [2024-11-27 23:27:53,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:53,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-27 23:27:53,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:53,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-27 23:27:53,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2024-11-27 23:27:53,527 INFO L87 Difference]: Start difference. First operand 891 states and 1369 transitions. Second operand has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-27 23:28:02,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:28:02,589 INFO L93 Difference]: Finished difference Result 1183 states and 1770 transitions. [2024-11-27 23:28:02,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-27 23:28:02,590 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 225 [2024-11-27 23:28:02,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:28:02,593 INFO L225 Difference]: With dead ends: 1183 [2024-11-27 23:28:02,593 INFO L226 Difference]: Without dead ends: 1181 [2024-11-27 23:28:02,594 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=420, Invalid=1650, Unknown=0, NotChecked=0, Total=2070 [2024-11-27 23:28:02,595 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 636 mSDsluCounter, 1058 mSDsCounter, 0 mSdLazyCounter, 1422 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:28:02,595 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 1191 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1422 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-27 23:28:02,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2024-11-27 23:28:02,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 924. [2024-11-27 23:28:02,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 819 states have (on average 1.4884004884004884) internal successors, (1219), 819 states have internal predecessors, (1219), 99 states have call successors, (99), 5 states have call predecessors, (99), 5 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:28:02,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1417 transitions. [2024-11-27 23:28:02,728 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1417 transitions. Word has length 225 [2024-11-27 23:28:02,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:28:02,729 INFO L471 AbstractCegarLoop]: Abstraction has 924 states and 1417 transitions. [2024-11-27 23:28:02,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-27 23:28:02,729 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1417 transitions. [2024-11-27 23:28:02,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-27 23:28:02,731 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:28:02,732 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:28:02,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-27 23:28:02,732 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:28:02,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:02,733 INFO L85 PathProgramCache]: Analyzing trace with hash 964203839, now seen corresponding path program 1 times [2024-11-27 23:28:02,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:02,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933767531] [2024-11-27 23:28:02,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:02,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:37,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:28:37,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:37,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933767531] [2024-11-27 23:28:37,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933767531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:28:37,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:28:37,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-27 23:28:37,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390564188] [2024-11-27 23:28:37,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:28:37,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-27 23:28:37,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:37,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-27 23:28:37,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2024-11-27 23:28:37,107 INFO L87 Difference]: Start difference. First operand 924 states and 1417 transitions. Second operand has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-27 23:28:44,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:28:44,074 INFO L93 Difference]: Finished difference Result 1187 states and 1786 transitions. [2024-11-27 23:28:44,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-27 23:28:44,074 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 225 [2024-11-27 23:28:44,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:28:44,079 INFO L225 Difference]: With dead ends: 1187 [2024-11-27 23:28:44,079 INFO L226 Difference]: Without dead ends: 1185 [2024-11-27 23:28:44,080 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=318, Invalid=1088, Unknown=0, NotChecked=0, Total=1406 [2024-11-27 23:28:44,080 INFO L435 NwaCegarLoop]: 179 mSDtfsCounter, 567 mSDsluCounter, 1307 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 1574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:28:44,081 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 1486 Invalid, 1574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-27 23:28:44,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2024-11-27 23:28:44,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 956. [2024-11-27 23:28:44,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 851 states have (on average 1.4853113983548767) internal successors, (1264), 851 states have internal predecessors, (1264), 99 states have call successors, (99), 5 states have call predecessors, (99), 5 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:28:44,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1462 transitions. [2024-11-27 23:28:44,214 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1462 transitions. Word has length 225 [2024-11-27 23:28:44,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:28:44,214 INFO L471 AbstractCegarLoop]: Abstraction has 956 states and 1462 transitions. [2024-11-27 23:28:44,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-27 23:28:44,215 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1462 transitions. [2024-11-27 23:28:44,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-27 23:28:44,216 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:28:44,217 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:28:44,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-27 23:28:44,217 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:28:44,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:44,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1801646997, now seen corresponding path program 1 times [2024-11-27 23:28:44,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:44,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455947320] [2024-11-27 23:28:44,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:44,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:44,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:44,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:28:44,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:44,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455947320] [2024-11-27 23:28:44,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455947320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:28:44,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:28:44,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 23:28:44,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111433220] [2024-11-27 23:28:44,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:28:44,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:28:44,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:44,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:28:44,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:28:44,758 INFO L87 Difference]: Start difference. First operand 956 states and 1462 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:28:46,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:28:46,120 INFO L93 Difference]: Finished difference Result 1680 states and 2569 transitions. [2024-11-27 23:28:46,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 23:28:46,121 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 225 [2024-11-27 23:28:46,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:28:46,126 INFO L225 Difference]: With dead ends: 1680 [2024-11-27 23:28:46,126 INFO L226 Difference]: Without dead ends: 1112 [2024-11-27 23:28:46,127 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2024-11-27 23:28:46,128 INFO L435 NwaCegarLoop]: 236 mSDtfsCounter, 292 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:28:46,128 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 1193 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 23:28:46,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2024-11-27 23:28:46,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 952. [2024-11-27 23:28:46,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 847 states have (on average 1.4852420306965761) internal successors, (1258), 847 states have internal predecessors, (1258), 99 states have call successors, (99), 5 states have call predecessors, (99), 5 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:28:46,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1456 transitions. [2024-11-27 23:28:46,261 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1456 transitions. Word has length 225 [2024-11-27 23:28:46,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:28:46,262 INFO L471 AbstractCegarLoop]: Abstraction has 952 states and 1456 transitions. [2024-11-27 23:28:46,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:28:46,262 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1456 transitions. [2024-11-27 23:28:46,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-11-27 23:28:46,264 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:28:46,264 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:28:46,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-27 23:28:46,264 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:28:46,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:46,265 INFO L85 PathProgramCache]: Analyzing trace with hash -263943495, now seen corresponding path program 1 times [2024-11-27 23:28:46,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:46,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193559730] [2024-11-27 23:28:46,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:46,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:24,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:29:24,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:29:24,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193559730] [2024-11-27 23:29:24,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193559730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:29:24,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:29:24,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-27 23:29:24,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769480963] [2024-11-27 23:29:24,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:29:24,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-27 23:29:24,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:29:24,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-27 23:29:24,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2024-11-27 23:29:24,997 INFO L87 Difference]: Start difference. First operand 952 states and 1456 transitions. Second operand has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-27 23:29:34,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:34,858 INFO L93 Difference]: Finished difference Result 1166 states and 1743 transitions. [2024-11-27 23:29:34,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-27 23:29:34,858 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 226 [2024-11-27 23:29:34,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:34,863 INFO L225 Difference]: With dead ends: 1166 [2024-11-27 23:29:34,863 INFO L226 Difference]: Without dead ends: 1164 [2024-11-27 23:29:34,866 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=491, Invalid=1861, Unknown=0, NotChecked=0, Total=2352 [2024-11-27 23:29:34,866 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 545 mSDsluCounter, 1474 mSDsCounter, 0 mSdLazyCounter, 1855 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 1989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:34,867 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 1630 Invalid, 1989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1855 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-27 23:29:34,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2024-11-27 23:29:35,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 956. [2024-11-27 23:29:35,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 851 states have (on average 1.4841363102232668) internal successors, (1263), 851 states have internal predecessors, (1263), 99 states have call successors, (99), 5 states have call predecessors, (99), 5 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:29:35,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1461 transitions. [2024-11-27 23:29:35,033 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1461 transitions. Word has length 226 [2024-11-27 23:29:35,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:35,034 INFO L471 AbstractCegarLoop]: Abstraction has 956 states and 1461 transitions. [2024-11-27 23:29:35,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-27 23:29:35,035 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1461 transitions. [2024-11-27 23:29:35,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-11-27 23:29:35,037 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:35,037 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:35,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-27 23:29:35,037 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:29:35,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:35,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1787040503, now seen corresponding path program 1 times [2024-11-27 23:29:35,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:29:35,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096649190] [2024-11-27 23:29:35,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:35,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:29:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:30:24,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:30:24,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:30:24,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096649190] [2024-11-27 23:30:24,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096649190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:30:24,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:30:24,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-27 23:30:24,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262430374] [2024-11-27 23:30:24,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:30:24,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-27 23:30:24,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:30:24,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-27 23:30:24,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2024-11-27 23:30:24,365 INFO L87 Difference]: Start difference. First operand 956 states and 1461 transitions. Second operand has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:30:39,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:30:39,222 INFO L93 Difference]: Finished difference Result 1228 states and 1833 transitions. [2024-11-27 23:30:39,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-27 23:30:39,223 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 226 [2024-11-27 23:30:39,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:30:39,226 INFO L225 Difference]: With dead ends: 1228 [2024-11-27 23:30:39,226 INFO L226 Difference]: Without dead ends: 1226 [2024-11-27 23:30:39,227 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=434, Invalid=1822, Unknown=0, NotChecked=0, Total=2256 [2024-11-27 23:30:39,228 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 498 mSDsluCounter, 1345 mSDsCounter, 0 mSdLazyCounter, 1964 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 2073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:30:39,228 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 1500 Invalid, 2073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1964 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-27 23:30:39,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2024-11-27 23:30:39,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 960. [2024-11-27 23:30:39,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 855 states have (on average 1.4830409356725147) internal successors, (1268), 855 states have internal predecessors, (1268), 99 states have call successors, (99), 5 states have call predecessors, (99), 5 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:30:39,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1466 transitions. [2024-11-27 23:30:39,318 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1466 transitions. Word has length 226 [2024-11-27 23:30:39,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:30:39,319 INFO L471 AbstractCegarLoop]: Abstraction has 960 states and 1466 transitions. [2024-11-27 23:30:39,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:30:39,319 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1466 transitions. [2024-11-27 23:30:39,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-27 23:30:39,320 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:30:39,320 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:30:39,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-27 23:30:39,320 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:30:39,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:30:39,321 INFO L85 PathProgramCache]: Analyzing trace with hash 441876742, now seen corresponding path program 1 times [2024-11-27 23:30:39,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:30:39,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344238045] [2024-11-27 23:30:39,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:30:39,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:30:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:17,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:31:17,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:17,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344238045] [2024-11-27 23:31:17,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344238045] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:17,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:31:17,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-27 23:31:17,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382940721] [2024-11-27 23:31:17,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:17,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-27 23:31:17,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:17,274 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-27 23:31:17,274 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2024-11-27 23:31:17,274 INFO L87 Difference]: Start difference. First operand 960 states and 1466 transitions. Second operand has 18 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 18 states have internal predecessors, (67), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:31:26,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:31:26,102 INFO L93 Difference]: Finished difference Result 1103 states and 1649 transitions. [2024-11-27 23:31:26,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-27 23:31:26,102 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 18 states have internal predecessors, (67), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 229 [2024-11-27 23:31:26,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:31:26,107 INFO L225 Difference]: With dead ends: 1103 [2024-11-27 23:31:26,107 INFO L226 Difference]: Without dead ends: 1101 [2024-11-27 23:31:26,108 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=213, Invalid=909, Unknown=0, NotChecked=0, Total=1122 [2024-11-27 23:31:26,109 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 513 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 1726 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 1829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:31:26,109 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 1709 Invalid, 1829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1726 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-27 23:31:26,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2024-11-27 23:31:26,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 958. [2024-11-27 23:31:26,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 853 states have (on average 1.4841735052754983) internal successors, (1266), 853 states have internal predecessors, (1266), 99 states have call successors, (99), 5 states have call predecessors, (99), 5 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:31:26,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1464 transitions. [2024-11-27 23:31:26,266 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1464 transitions. Word has length 229 [2024-11-27 23:31:26,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:31:26,267 INFO L471 AbstractCegarLoop]: Abstraction has 958 states and 1464 transitions. [2024-11-27 23:31:26,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 18 states have internal predecessors, (67), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:31:26,267 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1464 transitions. [2024-11-27 23:31:26,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-27 23:31:26,269 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:31:26,269 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:26,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-27 23:31:26,269 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:31:26,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:26,270 INFO L85 PathProgramCache]: Analyzing trace with hash 369490184, now seen corresponding path program 1 times [2024-11-27 23:31:26,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:26,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125887541] [2024-11-27 23:31:26,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:26,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:26,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:53,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:31:53,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:53,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125887541] [2024-11-27 23:31:53,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125887541] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:53,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:31:53,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-27 23:31:53,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375181431] [2024-11-27 23:31:53,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:53,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-27 23:31:53,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:53,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-27 23:31:53,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2024-11-27 23:31:53,428 INFO L87 Difference]: Start difference. First operand 958 states and 1464 transitions. Second operand has 18 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 18 states have internal predecessors, (67), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-27 23:31:59,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:31:59,671 INFO L93 Difference]: Finished difference Result 1148 states and 1716 transitions. [2024-11-27 23:31:59,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 23:31:59,671 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 18 states have internal predecessors, (67), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 229 [2024-11-27 23:31:59,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:31:59,676 INFO L225 Difference]: With dead ends: 1148 [2024-11-27 23:31:59,676 INFO L226 Difference]: Without dead ends: 1146 [2024-11-27 23:31:59,677 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=207, Invalid=785, Unknown=0, NotChecked=0, Total=992 [2024-11-27 23:31:59,677 INFO L435 NwaCegarLoop]: 175 mSDtfsCounter, 543 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 1470 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:31:59,678 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 1470 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-27 23:31:59,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2024-11-27 23:31:59,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 956. [2024-11-27 23:31:59,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 851 states have (on average 1.4853113983548767) internal successors, (1264), 851 states have internal predecessors, (1264), 99 states have call successors, (99), 5 states have call predecessors, (99), 5 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:31:59,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1462 transitions. [2024-11-27 23:31:59,835 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1462 transitions. Word has length 229 [2024-11-27 23:31:59,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:31:59,836 INFO L471 AbstractCegarLoop]: Abstraction has 956 states and 1462 transitions. [2024-11-27 23:31:59,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 18 states have internal predecessors, (67), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-27 23:31:59,836 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1462 transitions. [2024-11-27 23:31:59,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-27 23:31:59,838 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:31:59,838 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:59,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-11-27 23:31:59,839 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:31:59,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:59,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1802106556, now seen corresponding path program 1 times [2024-11-27 23:31:59,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:59,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89182844] [2024-11-27 23:31:59,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:59,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:59,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:00,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:32:00,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:00,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89182844] [2024-11-27 23:32:00,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89182844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:00,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:32:00,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 23:32:00,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075157904] [2024-11-27 23:32:00,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:00,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:32:00,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:00,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:32:00,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:32:00,944 INFO L87 Difference]: Start difference. First operand 956 states and 1462 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:32:02,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:32:02,478 INFO L93 Difference]: Finished difference Result 1612 states and 2477 transitions. [2024-11-27 23:32:02,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 23:32:02,479 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 229 [2024-11-27 23:32:02,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:32:02,483 INFO L225 Difference]: With dead ends: 1612 [2024-11-27 23:32:02,483 INFO L226 Difference]: Without dead ends: 1015 [2024-11-27 23:32:02,484 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-11-27 23:32:02,485 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 168 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:32:02,485 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 897 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 23:32:02,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2024-11-27 23:32:02,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 895. [2024-11-27 23:32:02,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 790 states have (on average 1.4886075949367088) internal successors, (1176), 790 states have internal predecessors, (1176), 99 states have call successors, (99), 5 states have call predecessors, (99), 5 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:32:02,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1374 transitions. [2024-11-27 23:32:02,630 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1374 transitions. Word has length 229 [2024-11-27 23:32:02,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:32:02,631 INFO L471 AbstractCegarLoop]: Abstraction has 895 states and 1374 transitions. [2024-11-27 23:32:02,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:32:02,631 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1374 transitions. [2024-11-27 23:32:02,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-11-27 23:32:02,633 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:02,633 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:02,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-11-27 23:32:02,633 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:32:02,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:02,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1520197616, now seen corresponding path program 1 times [2024-11-27 23:32:02,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:02,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991601308] [2024-11-27 23:32:02,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:02,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:42,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:32:42,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:42,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991601308] [2024-11-27 23:32:42,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991601308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:42,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:32:42,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-27 23:32:42,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777424948] [2024-11-27 23:32:42,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:42,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-27 23:32:42,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:42,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-27 23:32:42,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2024-11-27 23:32:42,533 INFO L87 Difference]: Start difference. First operand 895 states and 1374 transitions. Second operand has 20 states, 20 states have (on average 3.4) internal successors, (68), 20 states have internal predecessors, (68), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-27 23:32:48,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:32:48,872 INFO L93 Difference]: Finished difference Result 1039 states and 1569 transitions. [2024-11-27 23:32:48,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-27 23:32:48,873 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.4) internal successors, (68), 20 states have internal predecessors, (68), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 230 [2024-11-27 23:32:48,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:32:48,881 INFO L225 Difference]: With dead ends: 1039 [2024-11-27 23:32:48,881 INFO L226 Difference]: Without dead ends: 1037 [2024-11-27 23:32:48,882 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=244, Invalid=1016, Unknown=0, NotChecked=0, Total=1260 [2024-11-27 23:32:48,883 INFO L435 NwaCegarLoop]: 197 mSDtfsCounter, 417 mSDsluCounter, 1704 mSDsCounter, 0 mSdLazyCounter, 1795 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 1901 SdHoareTripleChecker+Invalid, 1923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:32:48,883 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 1901 Invalid, 1923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1795 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-27 23:32:48,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2024-11-27 23:32:49,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 865. [2024-11-27 23:32:49,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 760 states have (on average 1.4881578947368421) internal successors, (1131), 760 states have internal predecessors, (1131), 99 states have call successors, (99), 5 states have call predecessors, (99), 5 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:32:49,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1329 transitions. [2024-11-27 23:32:49,045 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1329 transitions. Word has length 230 [2024-11-27 23:32:49,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:32:49,045 INFO L471 AbstractCegarLoop]: Abstraction has 865 states and 1329 transitions. [2024-11-27 23:32:49,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.4) internal successors, (68), 20 states have internal predecessors, (68), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-27 23:32:49,046 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1329 transitions. [2024-11-27 23:32:49,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-11-27 23:32:49,047 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:49,048 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:49,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-11-27 23:32:49,048 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:32:49,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:49,049 INFO L85 PathProgramCache]: Analyzing trace with hash 530786382, now seen corresponding path program 1 times [2024-11-27 23:32:49,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:49,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974258465] [2024-11-27 23:32:49,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:49,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:49,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:33:27,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-27 23:33:27,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:33:27,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974258465] [2024-11-27 23:33:27,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974258465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:33:27,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:33:27,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-11-27 23:33:27,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445277758] [2024-11-27 23:33:27,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:33:27,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-27 23:33:27,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:33:27,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-27 23:33:27,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2024-11-27 23:33:27,492 INFO L87 Difference]: Start difference. First operand 865 states and 1329 transitions. Second operand has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 21 states have internal predecessors, (68), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:33:34,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:33:34,447 INFO L93 Difference]: Finished difference Result 1055 states and 1594 transitions. [2024-11-27 23:33:34,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 23:33:34,448 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 21 states have internal predecessors, (68), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 230 [2024-11-27 23:33:34,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:33:34,452 INFO L225 Difference]: With dead ends: 1055 [2024-11-27 23:33:34,452 INFO L226 Difference]: Without dead ends: 1053 [2024-11-27 23:33:34,453 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=233, Invalid=1027, Unknown=0, NotChecked=0, Total=1260 [2024-11-27 23:33:34,455 INFO L435 NwaCegarLoop]: 196 mSDtfsCounter, 411 mSDsluCounter, 1652 mSDsCounter, 0 mSdLazyCounter, 2054 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 2159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:33:34,455 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 1848 Invalid, 2159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 2054 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-27 23:33:34,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2024-11-27 23:33:34,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 833. [2024-11-27 23:33:34,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 728 states have (on average 1.489010989010989) internal successors, (1084), 728 states have internal predecessors, (1084), 99 states have call successors, (99), 5 states have call predecessors, (99), 5 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 23:33:34,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1282 transitions. [2024-11-27 23:33:34,616 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1282 transitions. Word has length 230 [2024-11-27 23:33:34,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:33:34,617 INFO L471 AbstractCegarLoop]: Abstraction has 833 states and 1282 transitions. [2024-11-27 23:33:34,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 21 states have internal predecessors, (68), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-27 23:33:34,617 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1282 transitions. [2024-11-27 23:33:34,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2024-11-27 23:33:34,621 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:33:34,622 INFO L218 NwaCegarLoop]: trace histogram [66, 66, 66, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:33:34,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-11-27 23:33:34,622 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:33:34,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:33:34,623 INFO L85 PathProgramCache]: Analyzing trace with hash 2123122262, now seen corresponding path program 1 times [2024-11-27 23:33:34,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:33:34,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121115125] [2024-11-27 23:33:34,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:33:34,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:33:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:33:35,283 INFO L134 CoverageAnalysis]: Checked inductivity of 8657 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2024-11-27 23:33:35,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:33:35,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121115125] [2024-11-27 23:33:35,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121115125] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:33:35,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198706722] [2024-11-27 23:33:35,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:33:35,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:33:35,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45cc7fd6-9bdc-43d5-84e4-1756b161f2ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:33:35,289 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45cc7fd6-9bdc-43d5-84e4-1756b161f2ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:33:35,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45cc7fd6-9bdc-43d5-84e4-1756b161f2ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:33:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:33:35,596 INFO L256 TraceCheckSpWp]: Trace formula consists of 915 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 23:33:35,612 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:33:37,730 INFO L134 CoverageAnalysis]: Checked inductivity of 8657 backedges. 998 proven. 4476 refuted. 0 times theorem prover too weak. 3183 trivial. 0 not checked. [2024-11-27 23:33:37,730 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:33:38,630 INFO L134 CoverageAnalysis]: Checked inductivity of 8657 backedges. 190 proven. 63 refuted. 0 times theorem prover too weak. 8404 trivial. 0 not checked. [2024-11-27 23:33:38,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198706722] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:33:38,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:33:38,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 7] total 19 [2024-11-27 23:33:38,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223880375] [2024-11-27 23:33:38,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:33:38,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-27 23:33:38,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:33:38,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-27 23:33:38,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2024-11-27 23:33:38,634 INFO L87 Difference]: Start difference. First operand 833 states and 1282 transitions. Second operand has 19 states, 19 states have (on average 12.473684210526315) internal successors, (237), 19 states have internal predecessors, (237), 6 states have call successors, (153), 4 states have call predecessors, (153), 6 states have return successors, (154), 6 states have call predecessors, (154), 6 states have call successors, (154)