./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b538cf-6477-4e99-8356-80781a06ff80/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b538cf-6477-4e99-8356-80781a06ff80/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_d7b538cf-6477-4e99-8356-80781a06ff80/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b538cf-6477-4e99-8356-80781a06ff80/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b538cf-6477-4e99-8356-80781a06ff80/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_d7b538cf-6477-4e99-8356-80781a06ff80/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 6b77a3b8187af54765a505f7649175cf18add0380d30145d0f26a5ac8cc02bbd --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:24:56,675 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:24:56,744 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b538cf-6477-4e99-8356-80781a06ff80/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:24:56,756 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:24:56,756 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:24:56,804 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:24:56,805 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:24:56,805 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:24:56,805 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:24:56,805 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:24:56,806 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:24:56,806 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:24:56,806 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:24:56,806 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:24:56,806 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:24:56,806 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:24:56,807 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:24:56,807 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:24:56,807 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:24:56,807 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:24:56,807 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:24:56,807 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:24:56,807 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:24:56,807 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:24:56,807 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:24:56,808 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:24:56,808 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:24:56,808 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:24:56,808 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:24:56,808 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:24:56,808 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:24:56,808 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:24:56,808 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:24:56,808 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:24:56,809 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:24:56,809 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:24:56,809 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:24:56,809 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:24:56,809 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:24:56,809 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:24:56,809 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:24:56,809 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:24:56,809 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:24:56,810 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:24:56,810 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:24:56,810 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:24:56,810 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:24:56,810 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:24:56,810 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_d7b538cf-6477-4e99-8356-80781a06ff80/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 -> 6b77a3b8187af54765a505f7649175cf18add0380d30145d0f26a5ac8cc02bbd [2024-11-27 20:24:57,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:24:57,141 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:24:57,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:24:57,145 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:24:57,145 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:24:57,148 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b538cf-6477-4e99-8356-80781a06ff80/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i [2024-11-27 20:25:00,122 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b538cf-6477-4e99-8356-80781a06ff80/bin/uautomizer-verify-aQ6SnzHsRB/data/4e81b3f80/38808de1f6bd4783909243fc85a4b236/FLAGc41e7c756 [2024-11-27 20:25:00,450 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:25:00,450 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b538cf-6477-4e99-8356-80781a06ff80/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i [2024-11-27 20:25:00,462 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b538cf-6477-4e99-8356-80781a06ff80/bin/uautomizer-verify-aQ6SnzHsRB/data/4e81b3f80/38808de1f6bd4783909243fc85a4b236/FLAGc41e7c756 [2024-11-27 20:25:00,709 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b538cf-6477-4e99-8356-80781a06ff80/bin/uautomizer-verify-aQ6SnzHsRB/data/4e81b3f80/38808de1f6bd4783909243fc85a4b236 [2024-11-27 20:25:00,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:25:00,712 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:25:00,714 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:25:00,714 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:25:00,717 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:25:00,718 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:25:00" (1/1) ... [2024-11-27 20:25:00,719 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32449676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:00, skipping insertion in model container [2024-11-27 20:25:00,719 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:25:00" (1/1) ... [2024-11-27 20:25:00,755 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:25:00,932 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_d7b538cf-6477-4e99-8356-80781a06ff80/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i[919,932] [2024-11-27 20:25:01,019 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:25:01,031 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:25:01,042 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_d7b538cf-6477-4e99-8356-80781a06ff80/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i[919,932] [2024-11-27 20:25:01,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:25:01,102 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:25:01,103 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:01 WrapperNode [2024-11-27 20:25:01,105 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:25:01,106 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:25:01,107 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:25:01,107 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:25:01,113 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:01" (1/1) ... [2024-11-27 20:25:01,124 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:01" (1/1) ... [2024-11-27 20:25:01,199 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 249 [2024-11-27 20:25:01,199 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:25:01,200 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:25:01,201 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:25:01,202 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:25:01,212 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:01" (1/1) ... [2024-11-27 20:25:01,212 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:01" (1/1) ... [2024-11-27 20:25:01,218 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:01" (1/1) ... [2024-11-27 20:25:01,263 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 20:25:01,263 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:01" (1/1) ... [2024-11-27 20:25:01,264 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:01" (1/1) ... [2024-11-27 20:25:01,285 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:01" (1/1) ... [2024-11-27 20:25:01,287 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:01" (1/1) ... [2024-11-27 20:25:01,294 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:01" (1/1) ... [2024-11-27 20:25:01,304 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:01" (1/1) ... [2024-11-27 20:25:01,307 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:01" (1/1) ... [2024-11-27 20:25:01,314 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:25:01,315 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:25:01,315 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:25:01,315 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:25:01,321 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:01" (1/1) ... [2024-11-27 20:25:01,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:25:01,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b538cf-6477-4e99-8356-80781a06ff80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:25:01,360 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b538cf-6477-4e99-8356-80781a06ff80/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:25:01,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b538cf-6477-4e99-8356-80781a06ff80/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:25:01,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:25:01,391 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 20:25:01,391 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 20:25:01,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:25:01,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:25:01,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:25:01,502 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:25:01,504 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:25:02,092 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-27 20:25:02,092 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:25:02,105 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:25:02,105 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 20:25:02,106 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:25:02 BoogieIcfgContainer [2024-11-27 20:25:02,106 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:25:02,108 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:25:02,109 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:25:02,114 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:25:02,114 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:25:00" (1/3) ... [2024-11-27 20:25:02,115 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@457e9e22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:25:02, skipping insertion in model container [2024-11-27 20:25:02,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:01" (2/3) ... [2024-11-27 20:25:02,116 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@457e9e22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:25:02, skipping insertion in model container [2024-11-27 20:25:02,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:25:02" (3/3) ... [2024-11-27 20:25:02,117 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i [2024-11-27 20:25:02,154 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:25:02,157 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i that has 2 procedures, 106 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 20:25:02,214 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:25:02,225 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;@4449a57b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:25:02,225 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:25:02,229 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 72 states have (on average 1.4722222222222223) internal successors, (106), 73 states have internal predecessors, (106), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-27 20:25:02,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-27 20:25:02,242 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:02,243 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:02,243 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:02,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:02,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1976063530, now seen corresponding path program 1 times [2024-11-27 20:25:02,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:02,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016805996] [2024-11-27 20:25:02,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:02,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:02,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2024-11-27 20:25:02,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:02,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016805996] [2024-11-27 20:25:02,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016805996] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:25:02,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063590876] [2024-11-27 20:25:02,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:02,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:25:02,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b538cf-6477-4e99-8356-80781a06ff80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:25:02,679 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b538cf-6477-4e99-8356-80781a06ff80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:25:02,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b538cf-6477-4e99-8356-80781a06ff80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:25:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:02,970 INFO L256 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 20:25:02,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:25:03,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2024-11-27 20:25:03,040 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:25:03,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063590876] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:03,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:25:03,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-27 20:25:03,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551127732] [2024-11-27 20:25:03,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:03,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 20:25:03,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:03,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 20:25:03,074 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:25:03,076 INFO L87 Difference]: Start difference. First operand has 106 states, 72 states have (on average 1.4722222222222223) internal successors, (106), 73 states have internal predecessors, (106), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-27 20:25:03,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:03,110 INFO L93 Difference]: Finished difference Result 205 states and 361 transitions. [2024-11-27 20:25:03,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 20:25:03,111 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) Word has length 202 [2024-11-27 20:25:03,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:03,119 INFO L225 Difference]: With dead ends: 205 [2024-11-27 20:25:03,119 INFO L226 Difference]: Without dead ends: 102 [2024-11-27 20:25:03,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:25:03,132 INFO L435 NwaCegarLoop]: 161 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:03,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:25:03,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-27 20:25:03,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-11-27 20:25:03,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 69 states have (on average 1.434782608695652) internal successors, (99), 69 states have internal predecessors, (99), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-27 20:25:03,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 161 transitions. [2024-11-27 20:25:03,180 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 161 transitions. Word has length 202 [2024-11-27 20:25:03,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:03,181 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 161 transitions. [2024-11-27 20:25:03,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-27 20:25:03,182 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 161 transitions. [2024-11-27 20:25:03,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-27 20:25:03,186 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:03,186 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:03,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b538cf-6477-4e99-8356-80781a06ff80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 20:25:03,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b538cf-6477-4e99-8356-80781a06ff80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-27 20:25:03,390 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:03,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:03,391 INFO L85 PathProgramCache]: Analyzing trace with hash 616888652, now seen corresponding path program 1 times [2024-11-27 20:25:03,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:03,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637643148] [2024-11-27 20:25:03,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:03,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:03,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:03,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:25:03,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:03,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637643148] [2024-11-27 20:25:03,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637643148] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:03,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:03,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:25:03,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277579703] [2024-11-27 20:25:03,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:03,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:25:03,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:03,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:25:03,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:25:03,885 INFO L87 Difference]: Start difference. First operand 102 states and 161 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:25:04,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:04,092 INFO L93 Difference]: Finished difference Result 300 states and 470 transitions. [2024-11-27 20:25:04,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:25:04,094 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 202 [2024-11-27 20:25:04,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:04,096 INFO L225 Difference]: With dead ends: 300 [2024-11-27 20:25:04,099 INFO L226 Difference]: Without dead ends: 201 [2024-11-27 20:25:04,100 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:25:04,101 INFO L435 NwaCegarLoop]: 226 mSDtfsCounter, 148 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:04,103 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 427 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:25:04,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-27 20:25:04,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 195. [2024-11-27 20:25:04,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 150 states have (on average 1.4666666666666666) internal successors, (220), 152 states have internal predecessors, (220), 41 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (41), 39 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-27 20:25:04,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 302 transitions. [2024-11-27 20:25:04,147 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 302 transitions. Word has length 202 [2024-11-27 20:25:04,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:04,148 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 302 transitions. [2024-11-27 20:25:04,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:25:04,148 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 302 transitions. [2024-11-27 20:25:04,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-27 20:25:04,156 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:04,157 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:04,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:25:04,157 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:04,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:04,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1072055090, now seen corresponding path program 1 times [2024-11-27 20:25:04,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:04,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278891897] [2024-11-27 20:25:04,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:04,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:04,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:04,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:25:04,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:04,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278891897] [2024-11-27 20:25:04,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278891897] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:04,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:04,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:25:04,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431769074] [2024-11-27 20:25:04,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:04,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:25:04,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:04,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:25:04,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:25:04,994 INFO L87 Difference]: Start difference. First operand 195 states and 302 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:25:05,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:05,154 INFO L93 Difference]: Finished difference Result 462 states and 712 transitions. [2024-11-27 20:25:05,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:25:05,157 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 202 [2024-11-27 20:25:05,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:05,164 INFO L225 Difference]: With dead ends: 462 [2024-11-27 20:25:05,164 INFO L226 Difference]: Without dead ends: 270 [2024-11-27 20:25:05,165 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:25:05,169 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 74 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:05,169 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 450 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:25:05,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2024-11-27 20:25:05,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 245. [2024-11-27 20:25:05,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 195 states have (on average 1.471794871794872) internal successors, (287), 198 states have internal predecessors, (287), 45 states have call successors, (45), 4 states have call predecessors, (45), 4 states have return successors, (45), 42 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-27 20:25:05,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 377 transitions. [2024-11-27 20:25:05,218 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 377 transitions. Word has length 202 [2024-11-27 20:25:05,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:05,219 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 377 transitions. [2024-11-27 20:25:05,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:25:05,219 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 377 transitions. [2024-11-27 20:25:05,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-27 20:25:05,226 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:05,226 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:05,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:25:05,226 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:05,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:05,228 INFO L85 PathProgramCache]: Analyzing trace with hash -200759798, now seen corresponding path program 1 times [2024-11-27 20:25:05,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:05,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042961627] [2024-11-27 20:25:05,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:05,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:08,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:25:08,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:08,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042961627] [2024-11-27 20:25:08,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042961627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:08,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:08,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 20:25:08,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592887623] [2024-11-27 20:25:08,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:08,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 20:25:08,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:08,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 20:25:08,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:25:08,152 INFO L87 Difference]: Start difference. First operand 245 states and 377 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-27 20:25:09,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:09,532 INFO L93 Difference]: Finished difference Result 1301 states and 1990 transitions. [2024-11-27 20:25:09,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 20:25:09,533 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) Word has length 202 [2024-11-27 20:25:09,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:09,542 INFO L225 Difference]: With dead ends: 1301 [2024-11-27 20:25:09,544 INFO L226 Difference]: Without dead ends: 1059 [2024-11-27 20:25:09,545 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2024-11-27 20:25:09,546 INFO L435 NwaCegarLoop]: 169 mSDtfsCounter, 988 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 988 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:09,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [988 Valid, 929 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 20:25:09,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2024-11-27 20:25:09,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 576. [2024-11-27 20:25:09,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 466 states have (on average 1.497854077253219) internal successors, (698), 473 states have internal predecessors, (698), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 93 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 20:25:09,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 898 transitions. [2024-11-27 20:25:09,618 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 898 transitions. Word has length 202 [2024-11-27 20:25:09,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:09,618 INFO L471 AbstractCegarLoop]: Abstraction has 576 states and 898 transitions. [2024-11-27 20:25:09,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-27 20:25:09,619 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 898 transitions. [2024-11-27 20:25:09,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-27 20:25:09,625 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:09,625 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:09,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:25:09,626 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:09,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:09,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1604678536, now seen corresponding path program 1 times [2024-11-27 20:25:09,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:09,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927998876] [2024-11-27 20:25:09,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:09,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:32,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:25:32,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:32,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927998876] [2024-11-27 20:25:32,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927998876] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:32,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:32,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-27 20:25:32,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455239668] [2024-11-27 20:25:32,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:32,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 20:25:32,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:32,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 20:25:32,036 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-27 20:25:32,036 INFO L87 Difference]: Start difference. First operand 576 states and 898 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-27 20:25:38,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:38,347 INFO L93 Difference]: Finished difference Result 1589 states and 2413 transitions. [2024-11-27 20:25:38,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 20:25:38,348 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) Word has length 202 [2024-11-27 20:25:38,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:38,355 INFO L225 Difference]: With dead ends: 1589 [2024-11-27 20:25:38,355 INFO L226 Difference]: Without dead ends: 1251 [2024-11-27 20:25:38,356 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=185, Invalid=517, Unknown=0, NotChecked=0, Total=702 [2024-11-27 20:25:38,357 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 771 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:38,357 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 961 Invalid, 1183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-27 20:25:38,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2024-11-27 20:25:38,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 624. [2024-11-27 20:25:38,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 514 states have (on average 1.5038910505836576) internal successors, (773), 521 states have internal predecessors, (773), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 93 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 20:25:38,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 973 transitions. [2024-11-27 20:25:38,423 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 973 transitions. Word has length 202 [2024-11-27 20:25:38,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:38,424 INFO L471 AbstractCegarLoop]: Abstraction has 624 states and 973 transitions. [2024-11-27 20:25:38,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-27 20:25:38,424 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 973 transitions. [2024-11-27 20:25:38,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-27 20:25:38,427 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:38,427 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:38,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 20:25:38,428 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:38,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:38,429 INFO L85 PathProgramCache]: Analyzing trace with hash 2027380362, now seen corresponding path program 1 times [2024-11-27 20:25:38,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:38,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921513476] [2024-11-27 20:25:38,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:38,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:39,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:25:39,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:39,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921513476] [2024-11-27 20:25:39,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921513476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:39,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:39,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 20:25:39,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345835338] [2024-11-27 20:25:39,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:39,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 20:25:39,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:39,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 20:25:39,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:25:39,793 INFO L87 Difference]: Start difference. First operand 624 states and 973 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:25:41,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:41,301 INFO L93 Difference]: Finished difference Result 1611 states and 2503 transitions. [2024-11-27 20:25:41,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:25:41,302 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 202 [2024-11-27 20:25:41,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:41,308 INFO L225 Difference]: With dead ends: 1611 [2024-11-27 20:25:41,308 INFO L226 Difference]: Without dead ends: 1273 [2024-11-27 20:25:41,310 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:25:41,311 INFO L435 NwaCegarLoop]: 196 mSDtfsCounter, 325 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:41,311 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 990 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 20:25:41,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2024-11-27 20:25:41,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 641. [2024-11-27 20:25:41,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 531 states have (on average 1.5065913370998116) internal successors, (800), 538 states have internal predecessors, (800), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 93 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 20:25:41,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1000 transitions. [2024-11-27 20:25:41,394 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1000 transitions. Word has length 202 [2024-11-27 20:25:41,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:41,394 INFO L471 AbstractCegarLoop]: Abstraction has 641 states and 1000 transitions. [2024-11-27 20:25:41,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:25:41,397 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1000 transitions. [2024-11-27 20:25:41,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-27 20:25:41,400 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:41,400 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:41,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:25:41,404 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:41,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:41,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1210127375, now seen corresponding path program 1 times [2024-11-27 20:25:41,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:41,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653575608] [2024-11-27 20:25:41,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:41,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:42,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:25:42,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:42,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653575608] [2024-11-27 20:25:42,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653575608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:42,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:42,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 20:25:42,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028662864] [2024-11-27 20:25:42,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:42,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:25:42,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:42,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:25:42,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:25:42,216 INFO L87 Difference]: Start difference. First operand 641 states and 1000 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:25:43,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:43,236 INFO L93 Difference]: Finished difference Result 2186 states and 3385 transitions. [2024-11-27 20:25:43,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 20:25:43,237 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 203 [2024-11-27 20:25:43,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:43,246 INFO L225 Difference]: With dead ends: 2186 [2024-11-27 20:25:43,246 INFO L226 Difference]: Without dead ends: 1788 [2024-11-27 20:25:43,248 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2024-11-27 20:25:43,250 INFO L435 NwaCegarLoop]: 158 mSDtfsCounter, 739 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:43,250 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 1116 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 20:25:43,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1788 states. [2024-11-27 20:25:43,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1788 to 711. [2024-11-27 20:25:43,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 601 states have (on average 1.5108153078202995) internal successors, (908), 608 states have internal predecessors, (908), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 93 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 20:25:43,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1108 transitions. [2024-11-27 20:25:43,337 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1108 transitions. Word has length 203 [2024-11-27 20:25:43,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:43,337 INFO L471 AbstractCegarLoop]: Abstraction has 711 states and 1108 transitions. [2024-11-27 20:25:43,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:25:43,338 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1108 transitions. [2024-11-27 20:25:43,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-27 20:25:43,341 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:43,341 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:43,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 20:25:43,342 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:43,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:43,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1344140881, now seen corresponding path program 1 times [2024-11-27 20:25:43,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:43,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976477120] [2024-11-27 20:25:43,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:43,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:54,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:25:54,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:54,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976477120] [2024-11-27 20:25:54,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976477120] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:54,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:54,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-27 20:25:54,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477522319] [2024-11-27 20:25:54,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:54,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 20:25:54,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:54,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 20:25:54,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:25:54,422 INFO L87 Difference]: Start difference. First operand 711 states and 1108 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:25:58,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:58,665 INFO L93 Difference]: Finished difference Result 1741 states and 2654 transitions. [2024-11-27 20:25:58,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 20:25:58,666 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 203 [2024-11-27 20:25:58,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:58,672 INFO L225 Difference]: With dead ends: 1741 [2024-11-27 20:25:58,672 INFO L226 Difference]: Without dead ends: 1370 [2024-11-27 20:25:58,673 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2024-11-27 20:25:58,674 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 1135 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:58,674 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 907 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-27 20:25:58,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2024-11-27 20:25:58,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 743. [2024-11-27 20:25:58,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 633 states have (on average 1.5086887835703002) internal successors, (955), 640 states have internal predecessors, (955), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 93 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 20:25:58,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1155 transitions. [2024-11-27 20:25:58,749 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1155 transitions. Word has length 203 [2024-11-27 20:25:58,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:58,750 INFO L471 AbstractCegarLoop]: Abstraction has 743 states and 1155 transitions. [2024-11-27 20:25:58,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:25:58,750 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1155 transitions. [2024-11-27 20:25:58,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-27 20:25:58,753 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:58,753 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:58,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 20:25:58,754 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:58,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:58,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1562995599, now seen corresponding path program 1 times [2024-11-27 20:25:58,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:58,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909965081] [2024-11-27 20:25:58,754 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:58,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:59,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:25:59,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:59,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909965081] [2024-11-27 20:25:59,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909965081] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:59,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:59,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 20:25:59,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853587377] [2024-11-27 20:25:59,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:59,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 20:25:59,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:59,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 20:25:59,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:25:59,831 INFO L87 Difference]: Start difference. First operand 743 states and 1155 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:26:00,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:26:00,928 INFO L93 Difference]: Finished difference Result 1839 states and 2819 transitions. [2024-11-27 20:26:00,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 20:26:00,929 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 203 [2024-11-27 20:26:00,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:26:00,935 INFO L225 Difference]: With dead ends: 1839 [2024-11-27 20:26:00,936 INFO L226 Difference]: Without dead ends: 1444 [2024-11-27 20:26:00,937 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2024-11-27 20:26:00,938 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 392 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:26:00,938 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 1340 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 20:26:00,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2024-11-27 20:26:01,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 714. [2024-11-27 20:26:01,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 604 states have (on average 1.5016556291390728) internal successors, (907), 611 states have internal predecessors, (907), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 93 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 20:26:01,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 1107 transitions. [2024-11-27 20:26:01,022 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 1107 transitions. Word has length 203 [2024-11-27 20:26:01,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:26:01,023 INFO L471 AbstractCegarLoop]: Abstraction has 714 states and 1107 transitions. [2024-11-27 20:26:01,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:26:01,024 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 1107 transitions. [2024-11-27 20:26:01,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-27 20:26:01,026 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:26:01,026 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:26:01,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 20:26:01,026 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:26:01,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:26:01,027 INFO L85 PathProgramCache]: Analyzing trace with hash -47899499, now seen corresponding path program 1 times [2024-11-27 20:26:01,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:26:01,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308928549] [2024-11-27 20:26:01,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:26:01,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:26:01,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:26:09,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:26:09,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:26:09,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308928549] [2024-11-27 20:26:09,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308928549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:26:09,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:26:09,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-27 20:26:09,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300276563] [2024-11-27 20:26:09,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:26:09,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 20:26:09,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:26:09,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 20:26:09,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-11-27 20:26:09,180 INFO L87 Difference]: Start difference. First operand 714 states and 1107 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-27 20:26:13,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:26:13,564 INFO L93 Difference]: Finished difference Result 2265 states and 3502 transitions. [2024-11-27 20:26:13,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 20:26:13,565 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) Word has length 203 [2024-11-27 20:26:13,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:26:13,570 INFO L225 Difference]: With dead ends: 2265 [2024-11-27 20:26:13,570 INFO L226 Difference]: Without dead ends: 1857 [2024-11-27 20:26:13,572 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2024-11-27 20:26:13,572 INFO L435 NwaCegarLoop]: 166 mSDtfsCounter, 749 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:26:13,572 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 1107 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-27 20:26:13,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2024-11-27 20:26:13,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 803. [2024-11-27 20:26:13,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 693 states have (on average 1.5194805194805194) internal successors, (1053), 700 states have internal predecessors, (1053), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 93 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 20:26:13,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1253 transitions. [2024-11-27 20:26:13,661 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1253 transitions. Word has length 203 [2024-11-27 20:26:13,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:26:13,662 INFO L471 AbstractCegarLoop]: Abstraction has 803 states and 1253 transitions. [2024-11-27 20:26:13,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-27 20:26:13,662 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1253 transitions. [2024-11-27 20:26:13,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-27 20:26:13,664 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:26:13,664 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:26:13,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 20:26:13,665 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:26:13,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:26:13,665 INFO L85 PathProgramCache]: Analyzing trace with hash 823395793, now seen corresponding path program 1 times [2024-11-27 20:26:13,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:26:13,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145395981] [2024-11-27 20:26:13,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:26:13,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:26:13,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:26:32,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:26:32,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:26:32,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145395981] [2024-11-27 20:26:32,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145395981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:26:32,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:26:32,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-27 20:26:32,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025544385] [2024-11-27 20:26:32,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:26:32,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 20:26:32,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:26:32,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 20:26:32,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:26:32,319 INFO L87 Difference]: Start difference. First operand 803 states and 1253 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:26:49,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:26:49,015 INFO L93 Difference]: Finished difference Result 2562 states and 3882 transitions. [2024-11-27 20:26:49,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-27 20:26:49,016 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 203 [2024-11-27 20:26:49,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:26:49,023 INFO L225 Difference]: With dead ends: 2562 [2024-11-27 20:26:49,024 INFO L226 Difference]: Without dead ends: 2191 [2024-11-27 20:26:49,025 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=358, Invalid=1202, Unknown=0, NotChecked=0, Total=1560 [2024-11-27 20:26:49,026 INFO L435 NwaCegarLoop]: 195 mSDtfsCounter, 1055 mSDsluCounter, 1355 mSDsCounter, 0 mSdLazyCounter, 2041 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1055 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 2139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:26:49,026 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1055 Valid, 1550 Invalid, 2139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2041 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2024-11-27 20:26:49,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2191 states. [2024-11-27 20:26:49,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2191 to 823. [2024-11-27 20:26:49,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 713 states have (on average 1.5189340813464236) internal successors, (1083), 720 states have internal predecessors, (1083), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 93 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 20:26:49,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1283 transitions. [2024-11-27 20:26:49,128 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1283 transitions. Word has length 203 [2024-11-27 20:26:49,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:26:49,129 INFO L471 AbstractCegarLoop]: Abstraction has 823 states and 1283 transitions. [2024-11-27 20:26:49,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:26:49,129 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1283 transitions. [2024-11-27 20:26:49,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-27 20:26:49,132 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:26:49,132 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:26:49,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 20:26:49,132 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:26:49,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:26:49,133 INFO L85 PathProgramCache]: Analyzing trace with hash -865547949, now seen corresponding path program 1 times [2024-11-27 20:26:49,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:26:49,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444458139] [2024-11-27 20:26:49,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:26:49,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:26:49,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:26:58,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:26:58,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:26:58,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444458139] [2024-11-27 20:26:58,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444458139] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:26:58,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:26:58,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-27 20:26:58,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041638964] [2024-11-27 20:26:58,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:26:58,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 20:26:58,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:26:58,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 20:26:58,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:26:58,030 INFO L87 Difference]: Start difference. First operand 823 states and 1283 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:27:01,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:27:01,611 INFO L93 Difference]: Finished difference Result 2284 states and 3536 transitions. [2024-11-27 20:27:01,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 20:27:01,612 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 203 [2024-11-27 20:27:01,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:27:01,617 INFO L225 Difference]: With dead ends: 2284 [2024-11-27 20:27:01,617 INFO L226 Difference]: Without dead ends: 1845 [2024-11-27 20:27:01,619 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2024-11-27 20:27:01,619 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 713 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:27:01,619 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 914 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-27 20:27:01,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1845 states. [2024-11-27 20:27:01,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1845 to 919. [2024-11-27 20:27:01,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 809 states have (on average 1.530284301606922) internal successors, (1238), 816 states have internal predecessors, (1238), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 93 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 20:27:01,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1438 transitions. [2024-11-27 20:27:01,723 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1438 transitions. Word has length 203 [2024-11-27 20:27:01,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:27:01,724 INFO L471 AbstractCegarLoop]: Abstraction has 919 states and 1438 transitions. [2024-11-27 20:27:01,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:27:01,724 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1438 transitions. [2024-11-27 20:27:01,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-27 20:27:01,727 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:27:01,727 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:27:01,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 20:27:01,727 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:27:01,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:27:01,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1987351339, now seen corresponding path program 1 times [2024-11-27 20:27:01,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:27:01,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975774810] [2024-11-27 20:27:01,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:27:01,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:27:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:27:15,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:27:15,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:27:15,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975774810] [2024-11-27 20:27:15,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975774810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:27:15,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:27:15,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-27 20:27:15,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651312481] [2024-11-27 20:27:15,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:27:15,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 20:27:15,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:27:15,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 20:27:15,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:27:15,158 INFO L87 Difference]: Start difference. First operand 919 states and 1438 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:27:19,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:27:19,111 INFO L93 Difference]: Finished difference Result 2343 states and 3612 transitions. [2024-11-27 20:27:19,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 20:27:19,112 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 203 [2024-11-27 20:27:19,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:27:19,116 INFO L225 Difference]: With dead ends: 2343 [2024-11-27 20:27:19,116 INFO L226 Difference]: Without dead ends: 1972 [2024-11-27 20:27:19,117 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2024-11-27 20:27:19,118 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 845 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:27:19,118 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 1082 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-27 20:27:19,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2024-11-27 20:27:19,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 932. [2024-11-27 20:27:19,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 822 states have (on average 1.5316301703163018) internal successors, (1259), 829 states have internal predecessors, (1259), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 93 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 20:27:19,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1459 transitions. [2024-11-27 20:27:19,218 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1459 transitions. Word has length 203 [2024-11-27 20:27:19,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:27:19,218 INFO L471 AbstractCegarLoop]: Abstraction has 932 states and 1459 transitions. [2024-11-27 20:27:19,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:27:19,219 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1459 transitions. [2024-11-27 20:27:19,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-27 20:27:19,221 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:27:19,221 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:27:19,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 20:27:19,222 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:27:19,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:27:19,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1116056047, now seen corresponding path program 1 times [2024-11-27 20:27:19,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:27:19,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117118824] [2024-11-27 20:27:19,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:27:19,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:27:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:27:19,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:27:19,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:27:19,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117118824] [2024-11-27 20:27:19,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117118824] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:27:19,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:27:19,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:27:19,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692796221] [2024-11-27 20:27:19,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:27:19,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:27:19,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:27:19,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:27:19,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:27:19,463 INFO L87 Difference]: Start difference. First operand 932 states and 1459 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:27:19,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:27:19,640 INFO L93 Difference]: Finished difference Result 1598 states and 2465 transitions. [2024-11-27 20:27:19,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:27:19,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 203 [2024-11-27 20:27:19,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:27:19,646 INFO L225 Difference]: With dead ends: 1598 [2024-11-27 20:27:19,646 INFO L226 Difference]: Without dead ends: 1147 [2024-11-27 20:27:19,647 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:27:19,648 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 122 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:27:19,649 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 485 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:27:19,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2024-11-27 20:27:19,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 740. [2024-11-27 20:27:19,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 645 states have (on average 1.4976744186046511) internal successors, (966), 648 states have internal predecessors, (966), 84 states have call successors, (84), 10 states have call predecessors, (84), 10 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-27 20:27:19,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1134 transitions. [2024-11-27 20:27:19,730 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1134 transitions. Word has length 203 [2024-11-27 20:27:19,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:27:19,731 INFO L471 AbstractCegarLoop]: Abstraction has 740 states and 1134 transitions. [2024-11-27 20:27:19,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:27:19,731 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1134 transitions. [2024-11-27 20:27:19,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-27 20:27:19,733 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:27:19,734 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:27:19,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 20:27:19,734 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:27:19,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:27:19,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1489967507, now seen corresponding path program 1 times [2024-11-27 20:27:19,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:27:19,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519290358] [2024-11-27 20:27:19,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:27:19,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:27:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:27:30,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:27:30,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:27:30,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519290358] [2024-11-27 20:27:30,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519290358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:27:30,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:27:30,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-27 20:27:30,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054070886] [2024-11-27 20:27:30,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:27:30,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 20:27:30,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:27:30,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 20:27:30,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:27:30,868 INFO L87 Difference]: Start difference. First operand 740 states and 1134 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:27:32,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:27:32,084 INFO L93 Difference]: Finished difference Result 1393 states and 2109 transitions. [2024-11-27 20:27:32,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 20:27:32,085 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 203 [2024-11-27 20:27:32,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:27:32,089 INFO L225 Difference]: With dead ends: 1393 [2024-11-27 20:27:32,090 INFO L226 Difference]: Without dead ends: 1084 [2024-11-27 20:27:32,092 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:27:32,093 INFO L435 NwaCegarLoop]: 182 mSDtfsCounter, 335 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:27:32,093 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 611 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 20:27:32,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2024-11-27 20:27:32,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 744. [2024-11-27 20:27:32,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 649 states have (on average 1.49768875192604) internal successors, (972), 652 states have internal predecessors, (972), 84 states have call successors, (84), 10 states have call predecessors, (84), 10 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-27 20:27:32,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1140 transitions. [2024-11-27 20:27:32,174 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1140 transitions. Word has length 203 [2024-11-27 20:27:32,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:27:32,174 INFO L471 AbstractCegarLoop]: Abstraction has 744 states and 1140 transitions. [2024-11-27 20:27:32,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:27:32,175 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1140 transitions. [2024-11-27 20:27:32,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-27 20:27:32,177 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:27:32,178 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:27:32,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 20:27:32,178 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:27:32,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:27:32,179 INFO L85 PathProgramCache]: Analyzing trace with hash -2102961039, now seen corresponding path program 1 times [2024-11-27 20:27:32,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:27:32,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408098469] [2024-11-27 20:27:32,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:27:32,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:27:32,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:27:48,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:27:48,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:27:48,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408098469] [2024-11-27 20:27:48,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408098469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:27:48,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:27:48,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-27 20:27:48,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352043421] [2024-11-27 20:27:48,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:27:48,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 20:27:48,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:27:48,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 20:27:48,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:27:48,623 INFO L87 Difference]: Start difference. First operand 744 states and 1140 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:27:55,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:27:55,375 INFO L93 Difference]: Finished difference Result 1713 states and 2593 transitions. [2024-11-27 20:27:55,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 20:27:55,376 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 204 [2024-11-27 20:27:55,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:27:55,381 INFO L225 Difference]: With dead ends: 1713 [2024-11-27 20:27:55,381 INFO L226 Difference]: Without dead ends: 1357 [2024-11-27 20:27:55,383 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2024-11-27 20:27:55,384 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 713 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:27:55,384 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 819 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-27 20:27:55,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2024-11-27 20:27:55,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 839. [2024-11-27 20:27:55,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 744 states have (on average 1.5040322580645162) internal successors, (1119), 747 states have internal predecessors, (1119), 84 states have call successors, (84), 10 states have call predecessors, (84), 10 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-27 20:27:55,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1287 transitions. [2024-11-27 20:27:55,462 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1287 transitions. Word has length 204 [2024-11-27 20:27:55,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:27:55,463 INFO L471 AbstractCegarLoop]: Abstraction has 839 states and 1287 transitions. [2024-11-27 20:27:55,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:27:55,463 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1287 transitions. [2024-11-27 20:27:55,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-27 20:27:55,465 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:27:55,466 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:27:55,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 20:27:55,466 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:27:55,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:27:55,467 INFO L85 PathProgramCache]: Analyzing trace with hash 386567923, now seen corresponding path program 1 times [2024-11-27 20:27:55,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:27:55,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822445844] [2024-11-27 20:27:55,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:27:55,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:27:55,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:27:55,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:27:55,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:27:55,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822445844] [2024-11-27 20:27:55,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822445844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:27:55,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:27:55,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:27:55,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716990626] [2024-11-27 20:27:55,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:27:55,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:27:55,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:27:55,961 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:27:55,961 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:27:55,961 INFO L87 Difference]: Start difference. First operand 839 states and 1287 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:27:56,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:27:56,419 INFO L93 Difference]: Finished difference Result 1550 states and 2372 transitions. [2024-11-27 20:27:56,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:27:56,420 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 204 [2024-11-27 20:27:56,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:27:56,423 INFO L225 Difference]: With dead ends: 1550 [2024-11-27 20:27:56,423 INFO L226 Difference]: Without dead ends: 1003 [2024-11-27 20:27:56,423 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:27:56,424 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 173 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:27:56,424 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 610 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 20:27:56,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2024-11-27 20:27:56,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 819. [2024-11-27 20:27:56,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 724 states have (on average 1.4958563535911602) internal successors, (1083), 727 states have internal predecessors, (1083), 84 states have call successors, (84), 10 states have call predecessors, (84), 10 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-27 20:27:56,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1251 transitions. [2024-11-27 20:27:56,505 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1251 transitions. Word has length 204 [2024-11-27 20:27:56,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:27:56,506 INFO L471 AbstractCegarLoop]: Abstraction has 819 states and 1251 transitions. [2024-11-27 20:27:56,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:27:56,507 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1251 transitions. [2024-11-27 20:27:56,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-27 20:27:56,509 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:27:56,509 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:27:56,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-27 20:27:56,509 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:27:56,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:27:56,510 INFO L85 PathProgramCache]: Analyzing trace with hash 2051457647, now seen corresponding path program 1 times [2024-11-27 20:27:56,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:27:56,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431772988] [2024-11-27 20:27:56,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:27:56,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:27:56,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:28:04,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:28:04,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:28:04,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431772988] [2024-11-27 20:28:04,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431772988] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:28:04,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:28:04,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 20:28:04,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198730190] [2024-11-27 20:28:04,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:28:04,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 20:28:04,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:28:04,591 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 20:28:04,591 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:28:04,591 INFO L87 Difference]: Start difference. First operand 819 states and 1251 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:28:07,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:28:07,312 INFO L93 Difference]: Finished difference Result 1432 states and 2160 transitions. [2024-11-27 20:28:07,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:28:07,312 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 204 [2024-11-27 20:28:07,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:28:07,315 INFO L225 Difference]: With dead ends: 1432 [2024-11-27 20:28:07,315 INFO L226 Difference]: Without dead ends: 1076 [2024-11-27 20:28:07,316 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-27 20:28:07,316 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 323 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:28:07,317 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 626 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-27 20:28:07,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2024-11-27 20:28:07,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 882. [2024-11-27 20:28:07,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 787 states have (on average 1.5006353240152477) internal successors, (1181), 790 states have internal predecessors, (1181), 84 states have call successors, (84), 10 states have call predecessors, (84), 10 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-27 20:28:07,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1349 transitions. [2024-11-27 20:28:07,379 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1349 transitions. Word has length 204 [2024-11-27 20:28:07,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:28:07,380 INFO L471 AbstractCegarLoop]: Abstraction has 882 states and 1349 transitions. [2024-11-27 20:28:07,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:28:07,380 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1349 transitions. [2024-11-27 20:28:07,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-27 20:28:07,383 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:28:07,383 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:28:07,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-27 20:28:07,383 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:28:07,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:28:07,384 INFO L85 PathProgramCache]: Analyzing trace with hash -631334589, now seen corresponding path program 1 times [2024-11-27 20:28:07,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:28:07,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288248110] [2024-11-27 20:28:07,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:28:07,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:28:07,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:29:16,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:29:16,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:29:16,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288248110] [2024-11-27 20:29:16,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288248110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:29:16,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:29:16,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 20:29:16,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034099734] [2024-11-27 20:29:16,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:29:16,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 20:29:16,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:29:16,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 20:29:16,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:29:16,442 INFO L87 Difference]: Start difference. First operand 882 states and 1349 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:29:18,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:29:18,819 INFO L93 Difference]: Finished difference Result 1874 states and 2855 transitions. [2024-11-27 20:29:18,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:29:18,821 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 204 [2024-11-27 20:29:18,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:29:18,830 INFO L225 Difference]: With dead ends: 1874 [2024-11-27 20:29:18,830 INFO L226 Difference]: Without dead ends: 1273 [2024-11-27 20:29:18,831 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:29:18,833 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 155 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:29:18,833 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 1034 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 20:29:18,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2024-11-27 20:29:18,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1156. [2024-11-27 20:29:18,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1059 states have (on average 1.4589235127478755) internal successors, (1545), 1062 states have internal predecessors, (1545), 84 states have call successors, (84), 12 states have call predecessors, (84), 12 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-27 20:29:18,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1713 transitions. [2024-11-27 20:29:18,922 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1713 transitions. Word has length 204 [2024-11-27 20:29:18,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:29:18,923 INFO L471 AbstractCegarLoop]: Abstraction has 1156 states and 1713 transitions. [2024-11-27 20:29:18,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:29:18,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1713 transitions. [2024-11-27 20:29:18,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-27 20:29:18,926 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:18,926 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:29:18,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-27 20:29:18,926 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:18,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:18,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1400787672, now seen corresponding path program 1 times [2024-11-27 20:29:18,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:18,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442446280] [2024-11-27 20:29:18,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:29:18,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:29:28,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:29:28,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:29:28,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442446280] [2024-11-27 20:29:28,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442446280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:29:28,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:29:28,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-27 20:29:28,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979099280] [2024-11-27 20:29:28,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:29:28,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 20:29:28,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:29:28,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 20:29:28,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:29:28,462 INFO L87 Difference]: Start difference. First operand 1156 states and 1713 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:29:30,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:29:30,865 INFO L93 Difference]: Finished difference Result 2499 states and 3675 transitions. [2024-11-27 20:29:30,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 20:29:30,866 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 204 [2024-11-27 20:29:30,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:29:30,874 INFO L225 Difference]: With dead ends: 2499 [2024-11-27 20:29:30,874 INFO L226 Difference]: Without dead ends: 1930 [2024-11-27 20:29:30,876 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2024-11-27 20:29:30,876 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 557 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:29:30,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [557 Valid, 570 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-27 20:29:30,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1930 states. [2024-11-27 20:29:30,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1930 to 1195. [2024-11-27 20:29:30,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 1098 states have (on average 1.4617486338797814) internal successors, (1605), 1101 states have internal predecessors, (1605), 84 states have call successors, (84), 12 states have call predecessors, (84), 12 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-27 20:29:30,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1773 transitions. [2024-11-27 20:29:30,973 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1773 transitions. Word has length 204 [2024-11-27 20:29:30,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:29:30,973 INFO L471 AbstractCegarLoop]: Abstraction has 1195 states and 1773 transitions. [2024-11-27 20:29:30,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:29:30,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1773 transitions. [2024-11-27 20:29:30,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-27 20:29:30,976 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:30,976 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:29:30,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-27 20:29:30,976 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:30,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:30,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1796534465, now seen corresponding path program 1 times [2024-11-27 20:29:30,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:30,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802519758] [2024-11-27 20:29:30,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:29:30,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:31,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:29:31,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:29:31,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:29:31,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802519758] [2024-11-27 20:29:31,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802519758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:29:31,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:29:31,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:29:31,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165945067] [2024-11-27 20:29:31,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:29:31,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:29:31,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:29:31,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:29:31,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:29:31,153 INFO L87 Difference]: Start difference. First operand 1195 states and 1773 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:29:31,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:29:31,463 INFO L93 Difference]: Finished difference Result 2178 states and 3227 transitions. [2024-11-27 20:29:31,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:29:31,464 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 204 [2024-11-27 20:29:31,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:29:31,470 INFO L225 Difference]: With dead ends: 2178 [2024-11-27 20:29:31,470 INFO L226 Difference]: Without dead ends: 1572 [2024-11-27 20:29:31,473 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:29:31,473 INFO L435 NwaCegarLoop]: 223 mSDtfsCounter, 135 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:29:31,473 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 424 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:29:31,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2024-11-27 20:29:31,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1059. [2024-11-27 20:29:31,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 962 states have (on average 1.4688149688149688) internal successors, (1413), 965 states have internal predecessors, (1413), 84 states have call successors, (84), 12 states have call predecessors, (84), 12 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-27 20:29:31,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 1581 transitions. [2024-11-27 20:29:31,596 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 1581 transitions. Word has length 204 [2024-11-27 20:29:31,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:29:31,597 INFO L471 AbstractCegarLoop]: Abstraction has 1059 states and 1581 transitions. [2024-11-27 20:29:31,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:29:31,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 1581 transitions. [2024-11-27 20:29:31,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-27 20:29:31,599 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:31,599 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:29:31,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-27 20:29:31,600 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:31,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:31,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1679227855, now seen corresponding path program 1 times [2024-11-27 20:29:31,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:31,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820467482] [2024-11-27 20:29:31,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:29:31,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:29:32,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:29:32,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:29:32,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820467482] [2024-11-27 20:29:32,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820467482] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:29:32,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:29:32,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:29:32,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170994860] [2024-11-27 20:29:32,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:29:32,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:29:32,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:29:32,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:29:32,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:29:32,469 INFO L87 Difference]: Start difference. First operand 1059 states and 1581 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:29:33,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:29:33,067 INFO L93 Difference]: Finished difference Result 2017 states and 2983 transitions. [2024-11-27 20:29:33,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:29:33,068 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 205 [2024-11-27 20:29:33,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:29:33,075 INFO L225 Difference]: With dead ends: 2017 [2024-11-27 20:29:33,075 INFO L226 Difference]: Without dead ends: 1269 [2024-11-27 20:29:33,076 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2024-11-27 20:29:33,079 INFO L435 NwaCegarLoop]: 198 mSDtfsCounter, 179 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:29:33,079 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 1053 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 20:29:33,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2024-11-27 20:29:33,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1007. [2024-11-27 20:29:33,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1007 states, 910 states have (on average 1.443956043956044) internal successors, (1314), 913 states have internal predecessors, (1314), 84 states have call successors, (84), 12 states have call predecessors, (84), 12 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-27 20:29:33,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1482 transitions. [2024-11-27 20:29:33,189 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1482 transitions. Word has length 205 [2024-11-27 20:29:33,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:29:33,189 INFO L471 AbstractCegarLoop]: Abstraction has 1007 states and 1482 transitions. [2024-11-27 20:29:33,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:29:33,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1482 transitions. [2024-11-27 20:29:33,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-27 20:29:33,192 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:33,192 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:29:33,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-27 20:29:33,192 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:33,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:33,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1092553154, now seen corresponding path program 1 times [2024-11-27 20:29:33,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:33,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152355276] [2024-11-27 20:29:33,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:29:33,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:29:34,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:29:34,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:29:34,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152355276] [2024-11-27 20:29:34,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152355276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:29:34,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:29:34,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:29:34,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234827529] [2024-11-27 20:29:34,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:29:34,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:29:34,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:29:34,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:29:34,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:29:34,194 INFO L87 Difference]: Start difference. First operand 1007 states and 1482 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:29:35,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:29:35,189 INFO L93 Difference]: Finished difference Result 2407 states and 3566 transitions. [2024-11-27 20:29:35,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:29:35,190 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 205 [2024-11-27 20:29:35,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:29:35,195 INFO L225 Difference]: With dead ends: 2407 [2024-11-27 20:29:35,195 INFO L226 Difference]: Without dead ends: 1684 [2024-11-27 20:29:35,196 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:29:35,196 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 526 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:29:35,197 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 584 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 20:29:35,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2024-11-27 20:29:35,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 969. [2024-11-27 20:29:35,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 872 states have (on average 1.4426605504587156) internal successors, (1258), 875 states have internal predecessors, (1258), 84 states have call successors, (84), 12 states have call predecessors, (84), 12 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-27 20:29:35,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1426 transitions. [2024-11-27 20:29:35,277 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1426 transitions. Word has length 205 [2024-11-27 20:29:35,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:29:35,278 INFO L471 AbstractCegarLoop]: Abstraction has 969 states and 1426 transitions. [2024-11-27 20:29:35,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:29:35,278 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1426 transitions. [2024-11-27 20:29:35,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-27 20:29:35,280 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:35,280 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:29:35,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-27 20:29:35,280 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:35,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:35,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1296400262, now seen corresponding path program 1 times [2024-11-27 20:29:35,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:35,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756739434] [2024-11-27 20:29:35,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:29:35,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:29:43,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:29:43,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:29:43,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756739434] [2024-11-27 20:29:43,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756739434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:29:43,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:29:43,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-27 20:29:43,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205140110] [2024-11-27 20:29:43,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:29:43,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:29:43,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:29:43,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:29:43,250 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:29:43,250 INFO L87 Difference]: Start difference. First operand 969 states and 1426 transitions. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:29:49,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:29:49,723 INFO L93 Difference]: Finished difference Result 2537 states and 3749 transitions. [2024-11-27 20:29:49,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 20:29:49,724 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 205 [2024-11-27 20:29:49,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:29:49,730 INFO L225 Difference]: With dead ends: 2537 [2024-11-27 20:29:49,730 INFO L226 Difference]: Without dead ends: 1852 [2024-11-27 20:29:49,732 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2024-11-27 20:29:49,732 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 608 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:29:49,733 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 669 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-27 20:29:49,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2024-11-27 20:29:49,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 858. [2024-11-27 20:29:49,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 761 states have (on average 1.445466491458607) internal successors, (1100), 764 states have internal predecessors, (1100), 84 states have call successors, (84), 12 states have call predecessors, (84), 12 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-27 20:29:49,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1268 transitions. [2024-11-27 20:29:49,816 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1268 transitions. Word has length 205 [2024-11-27 20:29:49,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:29:49,817 INFO L471 AbstractCegarLoop]: Abstraction has 858 states and 1268 transitions. [2024-11-27 20:29:49,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:29:49,818 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1268 transitions. [2024-11-27 20:29:49,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-27 20:29:49,819 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:49,819 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:29:49,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-27 20:29:49,820 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:49,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:49,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1233101764, now seen corresponding path program 1 times [2024-11-27 20:29:49,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:49,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262884317] [2024-11-27 20:29:49,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:29:49,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:49,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:02,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:30:02,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:02,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262884317] [2024-11-27 20:30:02,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262884317] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:02,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:02,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-27 20:30:02,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251153214] [2024-11-27 20:30:02,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:02,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 20:30:02,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:02,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 20:30:02,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:30:02,388 INFO L87 Difference]: Start difference. First operand 858 states and 1268 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-27 20:30:05,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:05,386 INFO L93 Difference]: Finished difference Result 2508 states and 3697 transitions. [2024-11-27 20:30:05,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 20:30:05,386 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) Word has length 205 [2024-11-27 20:30:05,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:05,390 INFO L225 Difference]: With dead ends: 2508 [2024-11-27 20:30:05,390 INFO L226 Difference]: Without dead ends: 1842 [2024-11-27 20:30:05,391 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2024-11-27 20:30:05,392 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 534 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:05,392 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 1179 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-27 20:30:05,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1842 states. [2024-11-27 20:30:05,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1842 to 909. [2024-11-27 20:30:05,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 812 states have (on average 1.4544334975369457) internal successors, (1181), 815 states have internal predecessors, (1181), 84 states have call successors, (84), 12 states have call predecessors, (84), 12 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-27 20:30:05,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1349 transitions. [2024-11-27 20:30:05,474 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1349 transitions. Word has length 205 [2024-11-27 20:30:05,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:05,474 INFO L471 AbstractCegarLoop]: Abstraction has 909 states and 1349 transitions. [2024-11-27 20:30:05,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-27 20:30:05,475 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1349 transitions. [2024-11-27 20:30:05,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-27 20:30:05,477 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:05,477 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:05,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-27 20:30:05,477 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:05,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:05,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1014247046, now seen corresponding path program 1 times [2024-11-27 20:30:05,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:05,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572540079] [2024-11-27 20:30:05,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:05,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:05,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:14,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:30:14,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:14,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572540079] [2024-11-27 20:30:14,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572540079] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:14,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:14,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-27 20:30:14,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550221468] [2024-11-27 20:30:14,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:14,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 20:30:14,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:14,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 20:30:14,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:30:14,528 INFO L87 Difference]: Start difference. First operand 909 states and 1349 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-27 20:30:17,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:17,367 INFO L93 Difference]: Finished difference Result 2438 states and 3592 transitions. [2024-11-27 20:30:17,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 20:30:17,367 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) Word has length 205 [2024-11-27 20:30:17,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:17,370 INFO L225 Difference]: With dead ends: 2438 [2024-11-27 20:30:17,371 INFO L226 Difference]: Without dead ends: 1772 [2024-11-27 20:30:17,372 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2024-11-27 20:30:17,372 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 632 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:17,372 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 1017 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-27 20:30:17,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1772 states. [2024-11-27 20:30:17,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1772 to 960. [2024-11-27 20:30:17,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 863 states have (on average 1.4623406720741599) internal successors, (1262), 866 states have internal predecessors, (1262), 84 states have call successors, (84), 12 states have call predecessors, (84), 12 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-27 20:30:17,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1430 transitions. [2024-11-27 20:30:17,451 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1430 transitions. Word has length 205 [2024-11-27 20:30:17,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:17,451 INFO L471 AbstractCegarLoop]: Abstraction has 960 states and 1430 transitions. [2024-11-27 20:30:17,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-27 20:30:17,451 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1430 transitions. [2024-11-27 20:30:17,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-27 20:30:17,452 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:17,452 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:17,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-27 20:30:17,453 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:17,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:17,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1030513540, now seen corresponding path program 1 times [2024-11-27 20:30:17,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:17,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29218011] [2024-11-27 20:30:17,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:17,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:17,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:25,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:30:25,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:25,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29218011] [2024-11-27 20:30:25,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29218011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:25,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:25,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 20:30:25,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566781522] [2024-11-27 20:30:25,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:25,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 20:30:25,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:25,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 20:30:25,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:30:25,340 INFO L87 Difference]: Start difference. First operand 960 states and 1430 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:30:26,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:26,709 INFO L93 Difference]: Finished difference Result 2000 states and 2983 transitions. [2024-11-27 20:30:26,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:30:26,709 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 205 [2024-11-27 20:30:26,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:26,712 INFO L225 Difference]: With dead ends: 2000 [2024-11-27 20:30:26,712 INFO L226 Difference]: Without dead ends: 1334 [2024-11-27 20:30:26,713 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-27 20:30:26,713 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 344 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:26,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 686 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 20:30:26,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2024-11-27 20:30:26,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 921. [2024-11-27 20:30:26,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 824 states have (on average 1.4575242718446602) internal successors, (1201), 827 states have internal predecessors, (1201), 84 states have call successors, (84), 12 states have call predecessors, (84), 12 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-27 20:30:26,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1369 transitions. [2024-11-27 20:30:26,804 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1369 transitions. Word has length 205 [2024-11-27 20:30:26,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:26,804 INFO L471 AbstractCegarLoop]: Abstraction has 921 states and 1369 transitions. [2024-11-27 20:30:26,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:30:26,804 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1369 transitions. [2024-11-27 20:30:26,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-27 20:30:26,805 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:26,805 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:26,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-27 20:30:26,806 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:26,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:26,806 INFO L85 PathProgramCache]: Analyzing trace with hash -811658822, now seen corresponding path program 1 times [2024-11-27 20:30:26,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:26,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754337419] [2024-11-27 20:30:26,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:26,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:26,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:32,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:30:32,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:32,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754337419] [2024-11-27 20:30:32,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754337419] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:32,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:32,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 20:30:32,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398308894] [2024-11-27 20:30:32,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:32,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 20:30:32,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:32,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 20:30:32,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:30:32,376 INFO L87 Difference]: Start difference. First operand 921 states and 1369 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:30:33,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:33,627 INFO L93 Difference]: Finished difference Result 1996 states and 2978 transitions. [2024-11-27 20:30:33,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:30:33,628 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 205 [2024-11-27 20:30:33,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:33,630 INFO L225 Difference]: With dead ends: 1996 [2024-11-27 20:30:33,630 INFO L226 Difference]: Without dead ends: 1295 [2024-11-27 20:30:33,631 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-27 20:30:33,632 INFO L435 NwaCegarLoop]: 175 mSDtfsCounter, 295 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:33,632 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 579 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 20:30:33,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2024-11-27 20:30:33,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 905. [2024-11-27 20:30:33,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 808 states have (on average 1.4554455445544554) internal successors, (1176), 811 states have internal predecessors, (1176), 84 states have call successors, (84), 12 states have call predecessors, (84), 12 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-27 20:30:33,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1344 transitions. [2024-11-27 20:30:33,733 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1344 transitions. Word has length 205 [2024-11-27 20:30:33,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:33,733 INFO L471 AbstractCegarLoop]: Abstraction has 905 states and 1344 transitions. [2024-11-27 20:30:33,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:30:33,734 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1344 transitions. [2024-11-27 20:30:33,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-27 20:30:33,734 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:33,734 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:33,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-27 20:30:33,735 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:33,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:33,735 INFO L85 PathProgramCache]: Analyzing trace with hash 747444893, now seen corresponding path program 1 times [2024-11-27 20:30:33,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:33,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247963960] [2024-11-27 20:30:33,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:33,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:33,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:33,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:30:33,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:33,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247963960] [2024-11-27 20:30:33,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247963960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:33,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:33,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:30:33,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280144141] [2024-11-27 20:30:33,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:33,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:30:33,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:33,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:30:33,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:30:33,838 INFO L87 Difference]: Start difference. First operand 905 states and 1344 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:30:34,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:34,081 INFO L93 Difference]: Finished difference Result 1748 states and 2581 transitions. [2024-11-27 20:30:34,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:30:34,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 206 [2024-11-27 20:30:34,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:34,085 INFO L225 Difference]: With dead ends: 1748 [2024-11-27 20:30:34,085 INFO L226 Difference]: Without dead ends: 1012 [2024-11-27 20:30:34,087 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 20:30:34,087 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 70 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:34,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 314 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:30:34,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2024-11-27 20:30:34,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 843. [2024-11-27 20:30:34,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 765 states have (on average 1.4627450980392156) internal successors, (1119), 766 states have internal predecessors, (1119), 68 states have call successors, (68), 9 states have call predecessors, (68), 9 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-27 20:30:34,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1255 transitions. [2024-11-27 20:30:34,181 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1255 transitions. Word has length 206 [2024-11-27 20:30:34,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:34,182 INFO L471 AbstractCegarLoop]: Abstraction has 843 states and 1255 transitions. [2024-11-27 20:30:34,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:30:34,182 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1255 transitions. [2024-11-27 20:30:34,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-27 20:30:34,183 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:34,184 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:34,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-27 20:30:34,184 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:34,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:34,185 INFO L85 PathProgramCache]: Analyzing trace with hash 494475533, now seen corresponding path program 1 times [2024-11-27 20:30:34,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:34,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126702107] [2024-11-27 20:30:34,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:34,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:34,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:34,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:30:34,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:34,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126702107] [2024-11-27 20:30:34,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126702107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:34,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:34,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:30:34,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020664916] [2024-11-27 20:30:34,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:34,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:30:34,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:34,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:30:34,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:30:34,279 INFO L87 Difference]: Start difference. First operand 843 states and 1255 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:30:34,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:34,463 INFO L93 Difference]: Finished difference Result 1572 states and 2336 transitions. [2024-11-27 20:30:34,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:30:34,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 206 [2024-11-27 20:30:34,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:34,467 INFO L225 Difference]: With dead ends: 1572 [2024-11-27 20:30:34,467 INFO L226 Difference]: Without dead ends: 902 [2024-11-27 20:30:34,468 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 20:30:34,469 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 65 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:34,469 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 318 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:30:34,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2024-11-27 20:30:34,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 803. [2024-11-27 20:30:34,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 725 states have (on average 1.4593103448275861) internal successors, (1058), 726 states have internal predecessors, (1058), 68 states have call successors, (68), 9 states have call predecessors, (68), 9 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-27 20:30:34,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1194 transitions. [2024-11-27 20:30:34,561 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1194 transitions. Word has length 206 [2024-11-27 20:30:34,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:34,562 INFO L471 AbstractCegarLoop]: Abstraction has 803 states and 1194 transitions. [2024-11-27 20:30:34,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:30:34,562 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1194 transitions. [2024-11-27 20:30:34,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-27 20:30:34,563 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:34,564 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:34,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-27 20:30:34,564 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:34,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:34,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1572790214, now seen corresponding path program 1 times [2024-11-27 20:30:34,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:34,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325821407] [2024-11-27 20:30:34,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:34,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:34,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:31:19,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:31:19,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:31:19,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325821407] [2024-11-27 20:31:19,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325821407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:31:19,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:31:19,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-27 20:31:19,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543193778] [2024-11-27 20:31:19,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:31:19,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:31:19,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:31:19,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:31:19,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:31:19,799 INFO L87 Difference]: Start difference. First operand 803 states and 1194 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:31:21,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:31:21,308 INFO L93 Difference]: Finished difference Result 1625 states and 2381 transitions. [2024-11-27 20:31:21,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 20:31:21,309 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 206 [2024-11-27 20:31:21,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:31:21,312 INFO L225 Difference]: With dead ends: 1625 [2024-11-27 20:31:21,313 INFO L226 Difference]: Without dead ends: 955 [2024-11-27 20:31:21,314 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:31:21,315 INFO L435 NwaCegarLoop]: 242 mSDtfsCounter, 225 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:31:21,315 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 1441 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 20:31:21,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2024-11-27 20:31:21,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 753. [2024-11-27 20:31:21,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 675 states have (on average 1.431111111111111) internal successors, (966), 676 states have internal predecessors, (966), 68 states have call successors, (68), 9 states have call predecessors, (68), 9 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-27 20:31:21,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1102 transitions. [2024-11-27 20:31:21,378 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1102 transitions. Word has length 206 [2024-11-27 20:31:21,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:31:21,379 INFO L471 AbstractCegarLoop]: Abstraction has 753 states and 1102 transitions. [2024-11-27 20:31:21,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:31:21,379 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1102 transitions. [2024-11-27 20:31:21,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-27 20:31:21,380 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:31:21,380 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:31:21,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-27 20:31:21,380 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:31:21,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:31:21,381 INFO L85 PathProgramCache]: Analyzing trace with hash -970906848, now seen corresponding path program 1 times [2024-11-27 20:31:21,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:31:21,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568515347] [2024-11-27 20:31:21,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:31:21,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:31:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:31:34,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:31:34,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:31:34,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568515347] [2024-11-27 20:31:34,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568515347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:31:34,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:31:34,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 20:31:34,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746477804] [2024-11-27 20:31:34,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:31:34,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:31:34,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:31:34,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:31:34,826 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:31:34,826 INFO L87 Difference]: Start difference. First operand 753 states and 1102 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:31:36,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:31:36,157 INFO L93 Difference]: Finished difference Result 1007 states and 1447 transitions. [2024-11-27 20:31:36,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:31:36,158 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 207 [2024-11-27 20:31:36,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:31:36,160 INFO L225 Difference]: With dead ends: 1007 [2024-11-27 20:31:36,160 INFO L226 Difference]: Without dead ends: 1005 [2024-11-27 20:31:36,161 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:31:36,161 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 147 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:31:36,161 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 863 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 20:31:36,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2024-11-27 20:31:36,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 853. [2024-11-27 20:31:36,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 775 states have (on average 1.4425806451612904) internal successors, (1118), 776 states have internal predecessors, (1118), 68 states have call successors, (68), 9 states have call predecessors, (68), 9 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-27 20:31:36,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1254 transitions. [2024-11-27 20:31:36,228 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1254 transitions. Word has length 207 [2024-11-27 20:31:36,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:31:36,228 INFO L471 AbstractCegarLoop]: Abstraction has 853 states and 1254 transitions. [2024-11-27 20:31:36,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:31:36,228 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1254 transitions. [2024-11-27 20:31:36,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-27 20:31:36,230 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:31:36,230 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:31:36,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-27 20:31:36,230 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:31:36,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:31:36,231 INFO L85 PathProgramCache]: Analyzing trace with hash -46966530, now seen corresponding path program 1 times [2024-11-27 20:31:36,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:31:36,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837317489] [2024-11-27 20:31:36,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:31:36,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:31:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:32:24,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:32:24,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:32:24,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837317489] [2024-11-27 20:32:24,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837317489] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:32:24,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:32:24,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:32:24,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999578792] [2024-11-27 20:32:24,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:32:24,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:32:24,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:32:24,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:32:24,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:32:24,611 INFO L87 Difference]: Start difference. First operand 853 states and 1254 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:32:26,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:32:26,227 INFO L93 Difference]: Finished difference Result 1853 states and 2683 transitions. [2024-11-27 20:32:26,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 20:32:26,227 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 208 [2024-11-27 20:32:26,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:32:26,231 INFO L225 Difference]: With dead ends: 1853 [2024-11-27 20:32:26,231 INFO L226 Difference]: Without dead ends: 1133 [2024-11-27 20:32:26,232 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2024-11-27 20:32:26,233 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 328 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:32:26,233 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 1036 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 20:32:26,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2024-11-27 20:32:26,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 885. [2024-11-27 20:32:26,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 807 states have (on average 1.4374225526641884) internal successors, (1160), 808 states have internal predecessors, (1160), 68 states have call successors, (68), 9 states have call predecessors, (68), 9 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-27 20:32:26,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1296 transitions. [2024-11-27 20:32:26,336 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1296 transitions. Word has length 208 [2024-11-27 20:32:26,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:32:26,337 INFO L471 AbstractCegarLoop]: Abstraction has 885 states and 1296 transitions. [2024-11-27 20:32:26,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:32:26,337 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1296 transitions. [2024-11-27 20:32:26,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-27 20:32:26,339 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:32:26,339 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:32:26,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-27 20:32:26,339 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:32:26,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:32:26,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1469057909, now seen corresponding path program 1 times [2024-11-27 20:32:26,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:32:26,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56414943] [2024-11-27 20:32:26,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:32:26,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:32:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:32:26,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:32:26,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:32:26,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56414943] [2024-11-27 20:32:26,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56414943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:32:26,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:32:26,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:32:26,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232028782] [2024-11-27 20:32:26,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:32:26,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:32:26,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:32:26,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:32:26,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:32:26,550 INFO L87 Difference]: Start difference. First operand 885 states and 1296 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:32:26,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:32:26,936 INFO L93 Difference]: Finished difference Result 1957 states and 2846 transitions. [2024-11-27 20:32:26,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:32:26,936 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 208 [2024-11-27 20:32:26,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:32:26,940 INFO L225 Difference]: With dead ends: 1957 [2024-11-27 20:32:26,940 INFO L226 Difference]: Without dead ends: 1205 [2024-11-27 20:32:26,942 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 20:32:26,942 INFO L435 NwaCegarLoop]: 223 mSDtfsCounter, 155 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:32:26,942 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 661 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:32:26,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2024-11-27 20:32:27,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 935. [2024-11-27 20:32:27,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 935 states, 857 states have (on average 1.4375729288214703) internal successors, (1232), 858 states have internal predecessors, (1232), 68 states have call successors, (68), 9 states have call predecessors, (68), 9 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-27 20:32:27,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1368 transitions. [2024-11-27 20:32:27,044 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1368 transitions. Word has length 208 [2024-11-27 20:32:27,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:32:27,045 INFO L471 AbstractCegarLoop]: Abstraction has 935 states and 1368 transitions. [2024-11-27 20:32:27,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:32:27,045 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1368 transitions. [2024-11-27 20:32:27,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-11-27 20:32:27,046 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:32:27,047 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:32:27,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-27 20:32:27,047 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:32:27,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:32:27,047 INFO L85 PathProgramCache]: Analyzing trace with hash 258030268, now seen corresponding path program 1 times [2024-11-27 20:32:27,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:32:27,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326042833] [2024-11-27 20:32:27,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:32:27,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:32:27,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:32:27,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:32:27,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:32:27,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326042833] [2024-11-27 20:32:27,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326042833] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:32:27,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:32:27,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:32:27,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097569821] [2024-11-27 20:32:27,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:32:27,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:32:27,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:32:27,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:32:27,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:32:27,136 INFO L87 Difference]: Start difference. First operand 935 states and 1368 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:32:27,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:32:27,368 INFO L93 Difference]: Finished difference Result 2086 states and 3057 transitions. [2024-11-27 20:32:27,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:32:27,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 209 [2024-11-27 20:32:27,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:32:27,373 INFO L225 Difference]: With dead ends: 2086 [2024-11-27 20:32:27,373 INFO L226 Difference]: Without dead ends: 1284 [2024-11-27 20:32:27,374 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 20:32:27,374 INFO L435 NwaCegarLoop]: 227 mSDtfsCounter, 62 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:32:27,375 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 358 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:32:27,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2024-11-27 20:32:27,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1185. [2024-11-27 20:32:27,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 1107 states have (on average 1.4525745257452574) internal successors, (1608), 1108 states have internal predecessors, (1608), 68 states have call successors, (68), 9 states have call predecessors, (68), 9 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-27 20:32:27,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1744 transitions. [2024-11-27 20:32:27,454 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1744 transitions. Word has length 209 [2024-11-27 20:32:27,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:32:27,454 INFO L471 AbstractCegarLoop]: Abstraction has 1185 states and 1744 transitions. [2024-11-27 20:32:27,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:32:27,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1744 transitions. [2024-11-27 20:32:27,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-11-27 20:32:27,456 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:32:27,456 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:32:27,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-27 20:32:27,457 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:32:27,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:32:27,457 INFO L85 PathProgramCache]: Analyzing trace with hash 95048424, now seen corresponding path program 1 times [2024-11-27 20:32:27,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:32:27,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202037511] [2024-11-27 20:32:27,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:32:27,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:32:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:32:27,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:32:27,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:32:27,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202037511] [2024-11-27 20:32:27,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202037511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:32:27,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:32:27,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:32:27,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017300190] [2024-11-27 20:32:27,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:32:27,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:32:27,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:32:27,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:32:27,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:32:27,549 INFO L87 Difference]: Start difference. First operand 1185 states and 1744 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:32:27,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:32:27,777 INFO L93 Difference]: Finished difference Result 2304 states and 3379 transitions. [2024-11-27 20:32:27,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:32:27,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 209 [2024-11-27 20:32:27,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:32:27,782 INFO L225 Difference]: With dead ends: 2304 [2024-11-27 20:32:27,782 INFO L226 Difference]: Without dead ends: 1252 [2024-11-27 20:32:27,783 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 20:32:27,784 INFO L435 NwaCegarLoop]: 195 mSDtfsCounter, 67 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:32:27,784 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 324 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:32:27,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2024-11-27 20:32:27,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1153. [2024-11-27 20:32:27,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 1075 states have (on average 1.4455813953488372) internal successors, (1554), 1076 states have internal predecessors, (1554), 68 states have call successors, (68), 9 states have call predecessors, (68), 9 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-27 20:32:27,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1690 transitions. [2024-11-27 20:32:27,887 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1690 transitions. Word has length 209 [2024-11-27 20:32:27,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:32:27,887 INFO L471 AbstractCegarLoop]: Abstraction has 1153 states and 1690 transitions. [2024-11-27 20:32:27,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:32:27,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1690 transitions. [2024-11-27 20:32:27,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-11-27 20:32:27,889 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:32:27,889 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:32:27,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-27 20:32:27,889 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:32:27,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:32:27,890 INFO L85 PathProgramCache]: Analyzing trace with hash -899821941, now seen corresponding path program 1 times [2024-11-27 20:32:27,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:32:27,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839306279] [2024-11-27 20:32:27,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:32:27,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:32:27,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:32:33,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:32:33,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:32:33,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839306279] [2024-11-27 20:32:33,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839306279] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:32:33,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:32:33,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-27 20:32:33,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553416717] [2024-11-27 20:32:33,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:32:33,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:32:33,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:32:33,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:32:33,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:32:33,142 INFO L87 Difference]: Start difference. First operand 1153 states and 1690 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:32:34,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:32:34,106 INFO L93 Difference]: Finished difference Result 2597 states and 3762 transitions. [2024-11-27 20:32:34,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 20:32:34,107 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 209 [2024-11-27 20:32:34,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:32:34,110 INFO L225 Difference]: With dead ends: 2597 [2024-11-27 20:32:34,111 INFO L226 Difference]: Without dead ends: 1577 [2024-11-27 20:32:34,112 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:32:34,112 INFO L435 NwaCegarLoop]: 229 mSDtfsCounter, 328 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:32:34,112 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 1208 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 20:32:34,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1577 states. [2024-11-27 20:32:34,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1577 to 1201. [2024-11-27 20:32:34,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1123 states have (on average 1.447907390917186) internal successors, (1626), 1124 states have internal predecessors, (1626), 68 states have call successors, (68), 9 states have call predecessors, (68), 9 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-27 20:32:34,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1762 transitions. [2024-11-27 20:32:34,220 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1762 transitions. Word has length 209 [2024-11-27 20:32:34,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:32:34,220 INFO L471 AbstractCegarLoop]: Abstraction has 1201 states and 1762 transitions. [2024-11-27 20:32:34,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:32:34,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1762 transitions. [2024-11-27 20:32:34,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-11-27 20:32:34,222 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:32:34,222 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:32:34,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-27 20:32:34,222 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:32:34,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:32:34,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1475271929, now seen corresponding path program 1 times [2024-11-27 20:32:34,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:32:34,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391211801] [2024-11-27 20:32:34,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:32:34,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:32:34,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:32:34,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 24 proven. 66 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2024-11-27 20:32:34,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:32:34,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391211801] [2024-11-27 20:32:34,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391211801] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:32:34,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771438925] [2024-11-27 20:32:34,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:32:34,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:32:34,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b538cf-6477-4e99-8356-80781a06ff80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:32:34,459 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b538cf-6477-4e99-8356-80781a06ff80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:32:34,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b538cf-6477-4e99-8356-80781a06ff80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:32:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:32:34,627 INFO L256 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 20:32:34,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:32:35,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 750 proven. 66 refuted. 0 times theorem prover too weak. 1044 trivial. 0 not checked. [2024-11-27 20:32:35,044 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:32:35,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 24 proven. 66 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2024-11-27 20:32:35,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771438925] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:32:35,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:32:35,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-27 20:32:35,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357177672] [2024-11-27 20:32:35,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:32:35,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:32:35,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:32:35,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:32:35,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:32:35,453 INFO L87 Difference]: Start difference. First operand 1201 states and 1762 transitions. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 3 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 3 states have call predecessors, (76), 3 states have call successors, (76) [2024-11-27 20:32:36,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:32:36,115 INFO L93 Difference]: Finished difference Result 2167 states and 3172 transitions. [2024-11-27 20:32:36,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 20:32:36,116 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 3 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 3 states have call predecessors, (76), 3 states have call successors, (76) Word has length 210 [2024-11-27 20:32:36,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:32:36,120 INFO L225 Difference]: With dead ends: 2167 [2024-11-27 20:32:36,120 INFO L226 Difference]: Without dead ends: 1044 [2024-11-27 20:32:36,122 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2024-11-27 20:32:36,123 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 320 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:32:36,124 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 451 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 20:32:36,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2024-11-27 20:32:36,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 982. [2024-11-27 20:32:36,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 902 states have (on average 1.4146341463414633) internal successors, (1276), 903 states have internal predecessors, (1276), 68 states have call successors, (68), 11 states have call predecessors, (68), 11 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-27 20:32:36,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1412 transitions. [2024-11-27 20:32:36,248 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1412 transitions. Word has length 210 [2024-11-27 20:32:36,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:32:36,251 INFO L471 AbstractCegarLoop]: Abstraction has 982 states and 1412 transitions. [2024-11-27 20:32:36,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 3 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 3 states have call predecessors, (76), 3 states have call successors, (76) [2024-11-27 20:32:36,251 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1412 transitions. [2024-11-27 20:32:36,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-11-27 20:32:36,253 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:32:36,253 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:32:36,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b538cf-6477-4e99-8356-80781a06ff80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 20:32:36,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b538cf-6477-4e99-8356-80781a06ff80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-27 20:32:36,454 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:32:36,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:32:36,455 INFO L85 PathProgramCache]: Analyzing trace with hash -164324321, now seen corresponding path program 1 times [2024-11-27 20:32:36,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:32:36,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229903830] [2024-11-27 20:32:36,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:32:36,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:32:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:32:40,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:32:40,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:32:40,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229903830] [2024-11-27 20:32:40,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229903830] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:32:40,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:32:40,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-27 20:32:40,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524569794] [2024-11-27 20:32:40,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:32:40,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 20:32:40,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:32:40,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 20:32:40,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:32:40,091 INFO L87 Difference]: Start difference. First operand 982 states and 1412 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:32:40,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:32:40,892 INFO L93 Difference]: Finished difference Result 1190 states and 1672 transitions. [2024-11-27 20:32:40,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 20:32:40,893 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 210 [2024-11-27 20:32:40,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:32:40,897 INFO L225 Difference]: With dead ends: 1190 [2024-11-27 20:32:40,897 INFO L226 Difference]: Without dead ends: 1188 [2024-11-27 20:32:40,898 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2024-11-27 20:32:40,899 INFO L435 NwaCegarLoop]: 182 mSDtfsCounter, 205 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:32:40,899 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 1284 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 20:32:40,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2024-11-27 20:32:41,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 982. [2024-11-27 20:32:41,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 902 states have (on average 1.4146341463414633) internal successors, (1276), 903 states have internal predecessors, (1276), 68 states have call successors, (68), 11 states have call predecessors, (68), 11 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-27 20:32:41,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1412 transitions. [2024-11-27 20:32:41,016 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1412 transitions. Word has length 210 [2024-11-27 20:32:41,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:32:41,016 INFO L471 AbstractCegarLoop]: Abstraction has 982 states and 1412 transitions. [2024-11-27 20:32:41,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:32:41,017 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1412 transitions. [2024-11-27 20:32:41,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-11-27 20:32:41,018 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:32:41,018 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:32:41,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-27 20:32:41,019 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:32:41,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:32:41,019 INFO L85 PathProgramCache]: Analyzing trace with hash 741248214, now seen corresponding path program 1 times [2024-11-27 20:32:41,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:32:41,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249734681] [2024-11-27 20:32:41,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:32:41,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:32:41,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:33:07,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:33:07,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:33:07,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249734681] [2024-11-27 20:33:07,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249734681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:33:07,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:33:07,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 20:33:07,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378485748] [2024-11-27 20:33:07,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:33:07,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 20:33:07,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:33:07,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 20:33:07,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:33:07,355 INFO L87 Difference]: Start difference. First operand 982 states and 1412 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:33:09,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:33:09,307 INFO L93 Difference]: Finished difference Result 1178 states and 1682 transitions. [2024-11-27 20:33:09,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:33:09,308 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 210 [2024-11-27 20:33:09,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:33:09,312 INFO L225 Difference]: With dead ends: 1178 [2024-11-27 20:33:09,312 INFO L226 Difference]: Without dead ends: 1176 [2024-11-27 20:33:09,313 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:33:09,313 INFO L435 NwaCegarLoop]: 207 mSDtfsCounter, 132 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:33:09,313 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 931 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 20:33:09,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2024-11-27 20:33:09,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1050. [2024-11-27 20:33:09,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 970 states have (on average 1.422680412371134) internal successors, (1380), 971 states have internal predecessors, (1380), 68 states have call successors, (68), 11 states have call predecessors, (68), 11 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-27 20:33:09,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1516 transitions. [2024-11-27 20:33:09,430 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1516 transitions. Word has length 210 [2024-11-27 20:33:09,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:33:09,431 INFO L471 AbstractCegarLoop]: Abstraction has 1050 states and 1516 transitions. [2024-11-27 20:33:09,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:33:09,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1516 transitions. [2024-11-27 20:33:09,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-11-27 20:33:09,433 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:33:09,433 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:33:09,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-27 20:33:09,433 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:33:09,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:33:09,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1314217329, now seen corresponding path program 1 times [2024-11-27 20:33:09,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:33:09,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774794020] [2024-11-27 20:33:09,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:33:09,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:33:09,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:33:58,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:33:58,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:33:58,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774794020] [2024-11-27 20:33:58,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774794020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:33:58,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:33:58,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:33:58,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818368554] [2024-11-27 20:33:58,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:33:58,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:33:58,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:33:58,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:33:58,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:33:58,197 INFO L87 Difference]: Start difference. First operand 1050 states and 1516 transitions. Second operand has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:33:59,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:33:59,635 INFO L93 Difference]: Finished difference Result 1242 states and 1755 transitions. [2024-11-27 20:33:59,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 20:33:59,636 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 211 [2024-11-27 20:33:59,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:33:59,639 INFO L225 Difference]: With dead ends: 1242 [2024-11-27 20:33:59,639 INFO L226 Difference]: Without dead ends: 1240 [2024-11-27 20:33:59,640 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:33:59,640 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 197 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:33:59,640 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 1191 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 20:33:59,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2024-11-27 20:33:59,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 976. [2024-11-27 20:33:59,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 896 states have (on average 1.4174107142857142) internal successors, (1270), 897 states have internal predecessors, (1270), 68 states have call successors, (68), 11 states have call predecessors, (68), 11 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-27 20:33:59,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1406 transitions. [2024-11-27 20:33:59,759 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1406 transitions. Word has length 211 [2024-11-27 20:33:59,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:33:59,759 INFO L471 AbstractCegarLoop]: Abstraction has 976 states and 1406 transitions. [2024-11-27 20:33:59,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:33:59,759 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1406 transitions. [2024-11-27 20:33:59,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-11-27 20:33:59,761 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:33:59,761 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:33:59,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-27 20:33:59,762 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:33:59,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:33:59,762 INFO L85 PathProgramCache]: Analyzing trace with hash 580379244, now seen corresponding path program 1 times [2024-11-27 20:33:59,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:33:59,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678801152] [2024-11-27 20:33:59,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:33:59,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:33:59,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:46,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 20:34:46,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:46,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678801152] [2024-11-27 20:34:46,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678801152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:46,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:46,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-27 20:34:46,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244133791] [2024-11-27 20:34:46,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:46,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 20:34:46,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:46,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 20:34:46,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:34:46,510 INFO L87 Difference]: Start difference. First operand 976 states and 1406 transitions. Second operand has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:34:49,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:34:49,258 INFO L93 Difference]: Finished difference Result 1186 states and 1668 transitions. [2024-11-27 20:34:49,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 20:34:49,259 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 211 [2024-11-27 20:34:49,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:34:49,261 INFO L225 Difference]: With dead ends: 1186 [2024-11-27 20:34:49,261 INFO L226 Difference]: Without dead ends: 1184 [2024-11-27 20:34:49,262 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2024-11-27 20:34:49,262 INFO L435 NwaCegarLoop]: 223 mSDtfsCounter, 201 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:34:49,262 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 1518 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-27 20:34:49,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2024-11-27 20:34:49,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 896. [2024-11-27 20:34:49,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 816 states have (on average 1.411764705882353) internal successors, (1152), 817 states have internal predecessors, (1152), 68 states have call successors, (68), 11 states have call predecessors, (68), 11 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-27 20:34:49,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1288 transitions. [2024-11-27 20:34:49,362 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1288 transitions. Word has length 211 [2024-11-27 20:34:49,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:34:49,363 INFO L471 AbstractCegarLoop]: Abstraction has 896 states and 1288 transitions. [2024-11-27 20:34:49,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 20:34:49,363 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1288 transitions. [2024-11-27 20:34:49,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-11-27 20:34:49,364 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:34:49,365 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:49,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-27 20:34:49,365 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:34:49,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:49,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1841929544, now seen corresponding path program 1 times [2024-11-27 20:34:49,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:49,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580060515] [2024-11-27 20:34:49,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:49,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:49,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:49,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 24 proven. 66 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2024-11-27 20:34:49,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:49,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580060515] [2024-11-27 20:34:49,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580060515] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:34:49,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945787746] [2024-11-27 20:34:49,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:49,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:49,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b538cf-6477-4e99-8356-80781a06ff80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:34:49,988 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b538cf-6477-4e99-8356-80781a06ff80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:34:49,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7b538cf-6477-4e99-8356-80781a06ff80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:34:50,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:50,170 INFO L256 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 20:34:50,185 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:36:00,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 750 proven. 66 refuted. 0 times theorem prover too weak. 1044 trivial. 0 not checked. [2024-11-27 20:36:00,133 INFO L312 TraceCheckSpWp]: Computing backward predicates...