./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.2.prop4-back-serstep.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b08f5e-56da-407a-9c97-4817fe32cb05/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b08f5e-56da-407a-9c97-4817fe32cb05/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b08f5e-56da-407a-9c97-4817fe32cb05/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b08f5e-56da-407a-9c97-4817fe32cb05/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.2.prop4-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b08f5e-56da-407a-9c97-4817fe32cb05/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b08f5e-56da-407a-9c97-4817fe32cb05/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c5f83f2a0d7f8d1de01865d5bcc7603a4a2d6b86bdffcc4f9192de12e01f362a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:20:52,683 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:20:52,760 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b08f5e-56da-407a-9c97-4817fe32cb05/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-23 23:20:52,765 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:20:52,765 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:20:52,794 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:20:52,795 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:20:52,797 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:20:52,797 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:20:52,797 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:20:52,797 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:20:52,797 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:20:52,798 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:20:52,798 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:20:52,798 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:20:52,798 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:20:52,798 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:20:52,798 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:20:52,799 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:20:52,799 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:20:52,799 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:20:52,799 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:20:52,799 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:20:52,799 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:20:52,799 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:20:52,799 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:20:52,799 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:20:52,800 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:20:52,800 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:20:52,800 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:20:52,800 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:20:52,800 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:20:52,800 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:20:52,800 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:20:52,800 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:20:52,801 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:20:52,802 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:20:52,802 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:20:52,802 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:20:52,802 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:20:52,803 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:20:52,803 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:20:52,803 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:20:52,803 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:20:52,803 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:20:52,803 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_36b08f5e-56da-407a-9c97-4817fe32cb05/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5f83f2a0d7f8d1de01865d5bcc7603a4a2d6b86bdffcc4f9192de12e01f362a [2024-11-23 23:20:53,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:20:53,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:20:53,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:20:53,130 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:20:53,131 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:20:53,134 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b08f5e-56da-407a-9c97-4817fe32cb05/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.2.prop4-back-serstep.c [2024-11-23 23:20:56,196 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b08f5e-56da-407a-9c97-4817fe32cb05/bin/uautomizer-verify-LYvppIcaGC/data/5f8f8b6c3/779558c143fa429492f9a2fa758fa944/FLAGaee5ccb1a [2024-11-23 23:20:56,844 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:20:56,847 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b08f5e-56da-407a-9c97-4817fe32cb05/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.2.prop4-back-serstep.c [2024-11-23 23:20:56,877 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b08f5e-56da-407a-9c97-4817fe32cb05/bin/uautomizer-verify-LYvppIcaGC/data/5f8f8b6c3/779558c143fa429492f9a2fa758fa944/FLAGaee5ccb1a [2024-11-23 23:20:56,898 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b08f5e-56da-407a-9c97-4817fe32cb05/bin/uautomizer-verify-LYvppIcaGC/data/5f8f8b6c3/779558c143fa429492f9a2fa758fa944 [2024-11-23 23:20:56,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:20:56,901 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:20:56,903 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:20:56,903 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:20:56,908 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:20:56,909 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:20:56" (1/1) ... [2024-11-23 23:20:56,909 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21a5fd52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:56, skipping insertion in model container [2024-11-23 23:20:56,909 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:20:56" (1/1) ... [2024-11-23 23:20:57,003 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:20:57,249 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_36b08f5e-56da-407a-9c97-4817fe32cb05/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.2.prop4-back-serstep.c[1175,1188] [2024-11-23 23:20:58,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:20:58,151 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:20:58,163 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_36b08f5e-56da-407a-9c97-4817fe32cb05/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.2.prop4-back-serstep.c[1175,1188] [2024-11-23 23:20:58,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:20:58,671 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:20:58,672 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:58 WrapperNode [2024-11-23 23:20:58,672 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:20:58,673 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:20:58,673 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:20:58,673 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:20:58,683 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:58" (1/1) ... [2024-11-23 23:20:58,815 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:58" (1/1) ... [2024-11-23 23:21:00,701 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 18804 [2024-11-23 23:21:00,702 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:21:00,704 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:21:00,704 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:21:00,705 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:21:00,722 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:58" (1/1) ... [2024-11-23 23:21:00,726 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:58" (1/1) ... [2024-11-23 23:21:01,413 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:58" (1/1) ... [2024-11-23 23:21:01,823 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-23 23:21:01,824 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:58" (1/1) ... [2024-11-23 23:21:01,824 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:58" (1/1) ... [2024-11-23 23:21:02,328 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:58" (1/1) ... [2024-11-23 23:21:02,365 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:58" (1/1) ... [2024-11-23 23:21:02,463 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:58" (1/1) ... [2024-11-23 23:21:02,527 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:58" (1/1) ... [2024-11-23 23:21:02,590 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:58" (1/1) ... [2024-11-23 23:21:02,949 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:21:02,950 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:21:02,950 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:21:02,951 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:21:02,952 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:58" (1/1) ... [2024-11-23 23:21:02,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:21:02,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b08f5e-56da-407a-9c97-4817fe32cb05/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:21:02,990 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b08f5e-56da-407a-9c97-4817fe32cb05/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:21:02,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b08f5e-56da-407a-9c97-4817fe32cb05/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:21:03,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:21:03,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:21:03,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:21:03,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:21:04,133 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:21:04,135 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:21:50,468 INFO L? ?]: Removed 9992 outVars from TransFormulas that were not future-live. [2024-11-23 23:21:50,468 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:21:50,584 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:21:50,585 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-23 23:21:50,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:21:50 BoogieIcfgContainer [2024-11-23 23:21:50,585 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:21:50,589 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:21:50,589 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:21:50,596 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:21:50,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:20:56" (1/3) ... [2024-11-23 23:21:50,598 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@479c2fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:21:50, skipping insertion in model container [2024-11-23 23:21:50,599 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:58" (2/3) ... [2024-11-23 23:21:50,599 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@479c2fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:21:50, skipping insertion in model container [2024-11-23 23:21:50,599 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:21:50" (3/3) ... [2024-11-23 23:21:50,601 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.needham.2.prop4-back-serstep.c [2024-11-23 23:21:50,621 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:21:50,626 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.needham.2.prop4-back-serstep.c that has 1 procedures, 6742 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 23:21:50,821 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:21:50,836 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;@65f246c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:21:50,837 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:21:50,863 INFO L276 IsEmpty]: Start isEmpty. Operand has 6742 states, 6740 states have (on average 1.5037091988130564) internal successors, (10135), 6741 states have internal predecessors, (10135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:21:50,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2024-11-23 23:21:50,909 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:21:50,910 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:21:50,911 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:21:50,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:21:50,917 INFO L85 PathProgramCache]: Analyzing trace with hash -695185611, now seen corresponding path program 1 times [2024-11-23 23:21:50,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:21:50,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176576131] [2024-11-23 23:21:50,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:21:50,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:21:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:21:54,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:21:54,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:21:54,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176576131] [2024-11-23 23:21:54,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176576131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:21:54,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:21:54,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:21:54,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645916385] [2024-11-23 23:21:54,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:21:54,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:21:54,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:21:54,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:21:54,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:21:54,138 INFO L87 Difference]: Start difference. First operand has 6742 states, 6740 states have (on average 1.5037091988130564) internal successors, (10135), 6741 states have internal predecessors, (10135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 132.25) internal successors, (529), 4 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:21:54,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:21:54,609 INFO L93 Difference]: Finished difference Result 13273 states and 19957 transitions. [2024-11-23 23:21:54,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:21:54,612 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 132.25) internal successors, (529), 4 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 529 [2024-11-23 23:21:54,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:21:54,670 INFO L225 Difference]: With dead ends: 13273 [2024-11-23 23:21:54,670 INFO L226 Difference]: Without dead ends: 6741 [2024-11-23 23:21:54,687 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:21:54,690 INFO L435 NwaCegarLoop]: 10129 mSDtfsCounter, 0 mSDsluCounter, 20252 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30381 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:21:54,691 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30381 Invalid, 11 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:21:54,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6741 states. [2024-11-23 23:21:54,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6741 to 6741. [2024-11-23 23:21:54,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6741 states, 6740 states have (on average 1.503412462908012) internal successors, (10133), 6740 states have internal predecessors, (10133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:21:54,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6741 states to 6741 states and 10133 transitions. [2024-11-23 23:21:54,952 INFO L78 Accepts]: Start accepts. Automaton has 6741 states and 10133 transitions. Word has length 529 [2024-11-23 23:21:54,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:21:54,955 INFO L471 AbstractCegarLoop]: Abstraction has 6741 states and 10133 transitions. [2024-11-23 23:21:54,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.25) internal successors, (529), 4 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:21:54,956 INFO L276 IsEmpty]: Start isEmpty. Operand 6741 states and 10133 transitions. [2024-11-23 23:21:54,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2024-11-23 23:21:54,971 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:21:54,971 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:21:54,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 23:21:54,972 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:21:54,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:21:54,973 INFO L85 PathProgramCache]: Analyzing trace with hash -74218902, now seen corresponding path program 1 times [2024-11-23 23:21:54,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:21:54,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683592745] [2024-11-23 23:21:54,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:21:54,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:21:55,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:21:56,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:21:56,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:21:56,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683592745] [2024-11-23 23:21:56,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683592745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:21:56,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:21:56,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:21:56,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640977638] [2024-11-23 23:21:56,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:21:56,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:21:56,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:21:56,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:21:56,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:21:56,345 INFO L87 Difference]: Start difference. First operand 6741 states and 10133 transitions. Second operand has 4 states, 4 states have (on average 132.5) internal successors, (530), 4 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:21:56,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:21:56,621 INFO L93 Difference]: Finished difference Result 13274 states and 19955 transitions. [2024-11-23 23:21:56,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:21:56,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 132.5) internal successors, (530), 4 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 530 [2024-11-23 23:21:56,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:21:56,646 INFO L225 Difference]: With dead ends: 13274 [2024-11-23 23:21:56,646 INFO L226 Difference]: Without dead ends: 6743 [2024-11-23 23:21:56,653 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 [2024-11-23 23:21:56,657 INFO L435 NwaCegarLoop]: 10129 mSDtfsCounter, 0 mSDsluCounter, 20248 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30377 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:21:56,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30377 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:21:56,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6743 states. [2024-11-23 23:21:56,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6743 to 6743. [2024-11-23 23:21:56,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6743 states, 6742 states have (on average 1.5032631266686443) internal successors, (10135), 6742 states have internal predecessors, (10135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:21:56,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6743 states to 6743 states and 10135 transitions. [2024-11-23 23:21:56,818 INFO L78 Accepts]: Start accepts. Automaton has 6743 states and 10135 transitions. Word has length 530 [2024-11-23 23:21:56,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:21:56,822 INFO L471 AbstractCegarLoop]: Abstraction has 6743 states and 10135 transitions. [2024-11-23 23:21:56,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.5) internal successors, (530), 4 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:21:56,823 INFO L276 IsEmpty]: Start isEmpty. Operand 6743 states and 10135 transitions. [2024-11-23 23:21:56,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2024-11-23 23:21:56,842 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:21:56,843 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:21:56,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:21:56,844 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:21:56,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:21:56,848 INFO L85 PathProgramCache]: Analyzing trace with hash 896218798, now seen corresponding path program 1 times [2024-11-23 23:21:56,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:21:56,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685046775] [2024-11-23 23:21:56,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:21:56,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:21:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:21:58,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:21:58,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:21:58,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685046775] [2024-11-23 23:21:58,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685046775] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:21:58,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:21:58,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:21:58,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010664367] [2024-11-23 23:21:58,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:21:58,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:21:58,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:21:58,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:21:58,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:21:58,357 INFO L87 Difference]: Start difference. First operand 6743 states and 10135 transitions. Second operand has 5 states, 5 states have (on average 106.2) internal successors, (531), 5 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:21:58,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:21:58,827 INFO L93 Difference]: Finished difference Result 19756 states and 29699 transitions. [2024-11-23 23:21:58,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:21:58,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 106.2) internal successors, (531), 5 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 531 [2024-11-23 23:21:58,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:21:58,883 INFO L225 Difference]: With dead ends: 19756 [2024-11-23 23:21:58,887 INFO L226 Difference]: Without dead ends: 13223 [2024-11-23 23:21:58,896 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:21:58,897 INFO L435 NwaCegarLoop]: 10127 mSDtfsCounter, 9533 mSDsluCounter, 30062 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9533 SdHoareTripleChecker+Valid, 40189 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:21:58,898 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9533 Valid, 40189 Invalid, 22 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:21:58,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13223 states. [2024-11-23 23:21:59,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13223 to 7577. [2024-11-23 23:21:59,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7577 states, 7576 states have (on average 1.5027719112988385) internal successors, (11385), 7576 states have internal predecessors, (11385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:21:59,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7577 states to 7577 states and 11385 transitions. [2024-11-23 23:21:59,126 INFO L78 Accepts]: Start accepts. Automaton has 7577 states and 11385 transitions. Word has length 531 [2024-11-23 23:21:59,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:21:59,127 INFO L471 AbstractCegarLoop]: Abstraction has 7577 states and 11385 transitions. [2024-11-23 23:21:59,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 106.2) internal successors, (531), 5 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:21:59,128 INFO L276 IsEmpty]: Start isEmpty. Operand 7577 states and 11385 transitions. [2024-11-23 23:21:59,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3695 [2024-11-23 23:21:59,452 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:21:59,455 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1] [2024-11-23 23:21:59,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:21:59,455 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:21:59,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:21:59,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1911882481, now seen corresponding path program 1 times [2024-11-23 23:21:59,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:21:59,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220743073] [2024-11-23 23:21:59,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:21:59,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:22:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:22:15,602 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 422 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:22:15,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:22:15,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220743073] [2024-11-23 23:22:15,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220743073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:22:15,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:22:15,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:22:15,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853935910] [2024-11-23 23:22:15,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:22:15,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:22:15,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:22:15,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:22:15,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:22:15,614 INFO L87 Difference]: Start difference. First operand 7577 states and 11385 transitions. Second operand has 3 states, 3 states have (on average 1231.3333333333333) internal successors, (3694), 3 states have internal predecessors, (3694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:22:15,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:22:15,784 INFO L93 Difference]: Finished difference Result 14111 states and 21208 transitions. [2024-11-23 23:22:15,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:22:15,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1231.3333333333333) internal successors, (3694), 3 states have internal predecessors, (3694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3694 [2024-11-23 23:22:15,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:22:15,809 INFO L225 Difference]: With dead ends: 14111 [2024-11-23 23:22:15,809 INFO L226 Difference]: Without dead ends: 7578 [2024-11-23 23:22:15,817 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:22:15,819 INFO L435 NwaCegarLoop]: 10130 mSDtfsCounter, 0 mSDsluCounter, 10124 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20254 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:22:15,820 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20254 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:22:15,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7578 states. [2024-11-23 23:22:15,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7578 to 7578. [2024-11-23 23:22:15,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7578 states, 7577 states have (on average 1.5027055562887686) internal successors, (11386), 7577 states have internal predecessors, (11386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:22:15,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7578 states to 7578 states and 11386 transitions. [2024-11-23 23:22:15,987 INFO L78 Accepts]: Start accepts. Automaton has 7578 states and 11386 transitions. Word has length 3694 [2024-11-23 23:22:15,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:22:15,990 INFO L471 AbstractCegarLoop]: Abstraction has 7578 states and 11386 transitions. [2024-11-23 23:22:15,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1231.3333333333333) internal successors, (3694), 3 states have internal predecessors, (3694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:22:15,992 INFO L276 IsEmpty]: Start isEmpty. Operand 7578 states and 11386 transitions. [2024-11-23 23:22:16,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3695 [2024-11-23 23:22:16,193 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:22:16,196 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1] [2024-11-23 23:22:16,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:22:16,200 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:22:16,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:22:16,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1237255488, now seen corresponding path program 1 times [2024-11-23 23:22:16,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:22:16,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381510903] [2024-11-23 23:22:16,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:22:16,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:22:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:22:29,524 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 422 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:22:29,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:22:29,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381510903] [2024-11-23 23:22:29,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381510903] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:22:29,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:22:29,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:22:29,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673345457] [2024-11-23 23:22:29,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:22:29,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:22:29,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:22:29,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:22:29,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:22:29,537 INFO L87 Difference]: Start difference. First operand 7578 states and 11386 transitions. Second operand has 3 states, 3 states have (on average 1231.3333333333333) internal successors, (3694), 3 states have internal predecessors, (3694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:22:29,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:22:29,692 INFO L93 Difference]: Finished difference Result 14113 states and 21210 transitions. [2024-11-23 23:22:29,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:22:29,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1231.3333333333333) internal successors, (3694), 3 states have internal predecessors, (3694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3694 [2024-11-23 23:22:29,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:22:29,712 INFO L225 Difference]: With dead ends: 14113 [2024-11-23 23:22:29,712 INFO L226 Difference]: Without dead ends: 7579 [2024-11-23 23:22:29,721 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:22:29,722 INFO L435 NwaCegarLoop]: 10130 mSDtfsCounter, 0 mSDsluCounter, 10124 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20254 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:22:29,722 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20254 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:22:29,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7579 states. [2024-11-23 23:22:29,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7579 to 7579. [2024-11-23 23:22:29,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7579 states, 7578 states have (on average 1.5026392187912379) internal successors, (11387), 7578 states have internal predecessors, (11387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:22:29,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7579 states to 7579 states and 11387 transitions. [2024-11-23 23:22:29,903 INFO L78 Accepts]: Start accepts. Automaton has 7579 states and 11387 transitions. Word has length 3694 [2024-11-23 23:22:29,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:22:29,906 INFO L471 AbstractCegarLoop]: Abstraction has 7579 states and 11387 transitions. [2024-11-23 23:22:29,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1231.3333333333333) internal successors, (3694), 3 states have internal predecessors, (3694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:22:29,907 INFO L276 IsEmpty]: Start isEmpty. Operand 7579 states and 11387 transitions. [2024-11-23 23:22:30,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3695 [2024-11-23 23:22:30,274 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:22:30,276 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1] [2024-11-23 23:22:30,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:22:30,277 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:22:30,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:22:30,280 INFO L85 PathProgramCache]: Analyzing trace with hash -494211153, now seen corresponding path program 1 times [2024-11-23 23:22:30,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:22:30,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067382040] [2024-11-23 23:22:30,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:22:30,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:22:34,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:22:40,979 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 422 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:22:40,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:22:40,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067382040] [2024-11-23 23:22:40,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067382040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:22:40,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:22:40,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:22:40,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911241150] [2024-11-23 23:22:40,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:22:40,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:22:40,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:22:40,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:22:40,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:22:40,988 INFO L87 Difference]: Start difference. First operand 7579 states and 11387 transitions. Second operand has 3 states, 3 states have (on average 1231.3333333333333) internal successors, (3694), 3 states have internal predecessors, (3694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:22:41,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:22:41,173 INFO L93 Difference]: Finished difference Result 14115 states and 21212 transitions. [2024-11-23 23:22:41,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:22:41,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1231.3333333333333) internal successors, (3694), 3 states have internal predecessors, (3694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3694 [2024-11-23 23:22:41,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:22:41,195 INFO L225 Difference]: With dead ends: 14115 [2024-11-23 23:22:41,195 INFO L226 Difference]: Without dead ends: 7580 [2024-11-23 23:22:41,202 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:22:41,203 INFO L435 NwaCegarLoop]: 10130 mSDtfsCounter, 0 mSDsluCounter, 10124 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20254 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:22:41,203 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20254 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:22:41,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7580 states. [2024-11-23 23:22:41,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7580 to 7580. [2024-11-23 23:22:41,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7580 states, 7579 states have (on average 1.5025728987993139) internal successors, (11388), 7579 states have internal predecessors, (11388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:22:41,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7580 states to 7580 states and 11388 transitions. [2024-11-23 23:22:41,324 INFO L78 Accepts]: Start accepts. Automaton has 7580 states and 11388 transitions. Word has length 3694 [2024-11-23 23:22:41,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:22:41,328 INFO L471 AbstractCegarLoop]: Abstraction has 7580 states and 11388 transitions. [2024-11-23 23:22:41,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1231.3333333333333) internal successors, (3694), 3 states have internal predecessors, (3694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:22:41,330 INFO L276 IsEmpty]: Start isEmpty. Operand 7580 states and 11388 transitions. [2024-11-23 23:22:41,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3695 [2024-11-23 23:22:41,479 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:22:41,482 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1] [2024-11-23 23:22:41,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 23:22:41,482 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:22:41,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:22:41,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1425612384, now seen corresponding path program 1 times [2024-11-23 23:22:41,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:22:41,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653394362] [2024-11-23 23:22:41,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:22:41,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:22:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:22:53,594 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2024-11-23 23:22:53,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:22:53,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653394362] [2024-11-23 23:22:53,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653394362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:22:53,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:22:53,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:22:53,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064221544] [2024-11-23 23:22:53,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:22:53,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:22:53,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:22:53,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:22:53,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:22:53,603 INFO L87 Difference]: Start difference. First operand 7580 states and 11388 transitions. Second operand has 5 states, 5 states have (on average 655.8) internal successors, (3279), 5 states have internal predecessors, (3279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:22:53,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:22:53,789 INFO L93 Difference]: Finished difference Result 14120 states and 21217 transitions. [2024-11-23 23:22:53,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:22:53,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 655.8) internal successors, (3279), 5 states have internal predecessors, (3279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3694 [2024-11-23 23:22:53,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:22:53,822 INFO L225 Difference]: With dead ends: 14120 [2024-11-23 23:22:53,822 INFO L226 Difference]: Without dead ends: 7584 [2024-11-23 23:22:53,825 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:22:53,826 INFO L435 NwaCegarLoop]: 10129 mSDtfsCounter, 0 mSDsluCounter, 20248 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30377 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:22:53,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30377 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:22:53,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7584 states. [2024-11-23 23:22:53,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7584 to 7580. [2024-11-23 23:22:53,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7580 states, 7579 states have (on average 1.5025728987993139) internal successors, (11388), 7579 states have internal predecessors, (11388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:22:53,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7580 states to 7580 states and 11388 transitions. [2024-11-23 23:22:53,946 INFO L78 Accepts]: Start accepts. Automaton has 7580 states and 11388 transitions. Word has length 3694 [2024-11-23 23:22:53,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:22:53,952 INFO L471 AbstractCegarLoop]: Abstraction has 7580 states and 11388 transitions. [2024-11-23 23:22:53,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 655.8) internal successors, (3279), 5 states have internal predecessors, (3279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:22:53,953 INFO L276 IsEmpty]: Start isEmpty. Operand 7580 states and 11388 transitions. [2024-11-23 23:22:54,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3696 [2024-11-23 23:22:54,048 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:22:54,050 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1] [2024-11-23 23:22:54,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:22:54,050 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:22:54,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:22:54,054 INFO L85 PathProgramCache]: Analyzing trace with hash -335420737, now seen corresponding path program 1 times [2024-11-23 23:22:54,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:22:54,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409739209] [2024-11-23 23:22:54,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:22:54,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:22:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:23:07,888 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 422 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:23:07,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:23:07,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409739209] [2024-11-23 23:23:07,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409739209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:23:07,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:23:07,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:23:07,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292218097] [2024-11-23 23:23:07,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:23:07,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:23:07,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:23:07,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:23:07,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:23:07,897 INFO L87 Difference]: Start difference. First operand 7580 states and 11388 transitions. Second operand has 4 states, 4 states have (on average 923.75) internal successors, (3695), 4 states have internal predecessors, (3695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:23:08,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:23:08,880 INFO L93 Difference]: Finished difference Result 14118 states and 21214 transitions. [2024-11-23 23:23:08,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:23:08,882 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 923.75) internal successors, (3695), 4 states have internal predecessors, (3695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3695 [2024-11-23 23:23:08,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:23:08,899 INFO L225 Difference]: With dead ends: 14118 [2024-11-23 23:23:08,899 INFO L226 Difference]: Without dead ends: 7580 [2024-11-23 23:23:08,905 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:23:08,906 INFO L435 NwaCegarLoop]: 9790 mSDtfsCounter, 9595 mSDsluCounter, 9786 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9595 SdHoareTripleChecker+Valid, 19576 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:23:08,906 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9595 Valid, 19576 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 23:23:08,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7580 states. [2024-11-23 23:23:09,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7580 to 7580. [2024-11-23 23:23:09,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7580 states, 7579 states have (on average 1.502440955271144) internal successors, (11387), 7579 states have internal predecessors, (11387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:23:09,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7580 states to 7580 states and 11387 transitions. [2024-11-23 23:23:09,125 INFO L78 Accepts]: Start accepts. Automaton has 7580 states and 11387 transitions. Word has length 3695 [2024-11-23 23:23:09,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:23:09,126 INFO L471 AbstractCegarLoop]: Abstraction has 7580 states and 11387 transitions. [2024-11-23 23:23:09,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 923.75) internal successors, (3695), 4 states have internal predecessors, (3695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:23:09,134 INFO L276 IsEmpty]: Start isEmpty. Operand 7580 states and 11387 transitions. [2024-11-23 23:23:09,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3697 [2024-11-23 23:23:09,330 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:23:09,336 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1] [2024-11-23 23:23:09,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 23:23:09,336 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:23:09,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:23:09,346 INFO L85 PathProgramCache]: Analyzing trace with hash -763541487, now seen corresponding path program 1 times [2024-11-23 23:23:09,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:23:09,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314955373] [2024-11-23 23:23:09,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:23:09,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:23:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:23:21,651 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 422 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:23:21,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:23:21,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314955373] [2024-11-23 23:23:21,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314955373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:23:21,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:23:21,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:23:21,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109977457] [2024-11-23 23:23:21,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:23:21,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:23:21,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:23:21,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:23:21,669 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:23:21,671 INFO L87 Difference]: Start difference. First operand 7580 states and 11387 transitions. Second operand has 4 states, 4 states have (on average 924.0) internal successors, (3696), 4 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:23:23,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:23:23,707 INFO L93 Difference]: Finished difference Result 14066 states and 21160 transitions. [2024-11-23 23:23:23,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:23:23,709 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 924.0) internal successors, (3696), 4 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3696 [2024-11-23 23:23:23,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:23:23,724 INFO L225 Difference]: With dead ends: 14066 [2024-11-23 23:23:23,725 INFO L226 Difference]: Without dead ends: 7528 [2024-11-23 23:23:23,732 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:23:23,734 INFO L435 NwaCegarLoop]: 9503 mSDtfsCounter, 9481 mSDsluCounter, 9497 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9481 SdHoareTripleChecker+Valid, 19000 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:23:23,734 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9481 Valid, 19000 Invalid, 1092 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [53 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-23 23:23:23,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7528 states. [2024-11-23 23:23:23,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7528 to 7528. [2024-11-23 23:23:23,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7528 states, 7527 states have (on average 1.498737876976219) internal successors, (11281), 7527 states have internal predecessors, (11281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:23:23,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7528 states to 7528 states and 11281 transitions. [2024-11-23 23:23:23,899 INFO L78 Accepts]: Start accepts. Automaton has 7528 states and 11281 transitions. Word has length 3696 [2024-11-23 23:23:23,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:23:23,904 INFO L471 AbstractCegarLoop]: Abstraction has 7528 states and 11281 transitions. [2024-11-23 23:23:23,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 924.0) internal successors, (3696), 4 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:23:23,905 INFO L276 IsEmpty]: Start isEmpty. Operand 7528 states and 11281 transitions. [2024-11-23 23:23:24,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3698 [2024-11-23 23:23:24,068 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:23:24,070 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1] [2024-11-23 23:23:24,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 23:23:24,071 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:23:24,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:23:24,079 INFO L85 PathProgramCache]: Analyzing trace with hash 504463735, now seen corresponding path program 1 times [2024-11-23 23:23:24,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:23:24,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407455244] [2024-11-23 23:23:24,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:23:24,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:23:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:23:34,508 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 422 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:23:34,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:23:34,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407455244] [2024-11-23 23:23:34,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407455244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:23:34,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:23:34,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:23:34,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816997602] [2024-11-23 23:23:34,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:23:34,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:23:34,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:23:34,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:23:34,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:23:34,516 INFO L87 Difference]: Start difference. First operand 7528 states and 11281 transitions. Second operand has 5 states, 5 states have (on average 739.4) internal successors, (3697), 5 states have internal predecessors, (3697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:23:34,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:23:34,748 INFO L93 Difference]: Finished difference Result 14015 states and 21002 transitions. [2024-11-23 23:23:34,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:23:34,750 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 739.4) internal successors, (3697), 5 states have internal predecessors, (3697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3697 [2024-11-23 23:23:34,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:23:34,765 INFO L225 Difference]: With dead ends: 14015 [2024-11-23 23:23:34,765 INFO L226 Difference]: Without dead ends: 7529 [2024-11-23 23:23:34,771 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:23:34,771 INFO L435 NwaCegarLoop]: 10001 mSDtfsCounter, 9489 mSDsluCounter, 19997 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9489 SdHoareTripleChecker+Valid, 29998 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:23:34,772 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9489 Valid, 29998 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:23:34,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7529 states. [2024-11-23 23:23:34,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7529 to 7529. [2024-11-23 23:23:34,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7529 states, 7528 states have (on average 1.4986716259298618) internal successors, (11282), 7528 states have internal predecessors, (11282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:23:34,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7529 states to 7529 states and 11282 transitions. [2024-11-23 23:23:34,875 INFO L78 Accepts]: Start accepts. Automaton has 7529 states and 11282 transitions. Word has length 3697 [2024-11-23 23:23:34,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:23:34,876 INFO L471 AbstractCegarLoop]: Abstraction has 7529 states and 11282 transitions. [2024-11-23 23:23:34,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 739.4) internal successors, (3697), 5 states have internal predecessors, (3697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:23:34,877 INFO L276 IsEmpty]: Start isEmpty. Operand 7529 states and 11282 transitions. [2024-11-23 23:23:34,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3698 [2024-11-23 23:23:34,938 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:23:34,940 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1] [2024-11-23 23:23:34,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 23:23:34,940 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:23:34,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:23:34,943 INFO L85 PathProgramCache]: Analyzing trace with hash -2027334345, now seen corresponding path program 1 times [2024-11-23 23:23:34,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:23:34,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298563491] [2024-11-23 23:23:34,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:23:34,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:23:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:23:45,375 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 422 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:23:45,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:23:45,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298563491] [2024-11-23 23:23:45,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298563491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:23:45,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:23:45,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:23:45,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440103862] [2024-11-23 23:23:45,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:23:45,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:23:45,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:23:45,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:23:45,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:23:45,384 INFO L87 Difference]: Start difference. First operand 7529 states and 11282 transitions. Second operand has 5 states, 5 states have (on average 739.4) internal successors, (3697), 5 states have internal predecessors, (3697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:23:46,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:23:46,100 INFO L93 Difference]: Finished difference Result 14016 states and 21002 transitions. [2024-11-23 23:23:46,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:23:46,101 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 739.4) internal successors, (3697), 5 states have internal predecessors, (3697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3697 [2024-11-23 23:23:46,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:23:46,118 INFO L225 Difference]: With dead ends: 14016 [2024-11-23 23:23:46,119 INFO L226 Difference]: Without dead ends: 7529 [2024-11-23 23:23:46,124 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:23:46,124 INFO L435 NwaCegarLoop]: 9687 mSDtfsCounter, 19481 mSDsluCounter, 9684 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19481 SdHoareTripleChecker+Valid, 19371 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:23:46,125 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19481 Valid, 19371 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 23:23:46,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7529 states. [2024-11-23 23:23:46,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7529 to 7529. [2024-11-23 23:23:46,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7529 states, 7528 states have (on average 1.498538788522848) internal successors, (11281), 7528 states have internal predecessors, (11281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:23:46,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7529 states to 7529 states and 11281 transitions. [2024-11-23 23:23:46,216 INFO L78 Accepts]: Start accepts. Automaton has 7529 states and 11281 transitions. Word has length 3697 [2024-11-23 23:23:46,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:23:46,217 INFO L471 AbstractCegarLoop]: Abstraction has 7529 states and 11281 transitions. [2024-11-23 23:23:46,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 739.4) internal successors, (3697), 5 states have internal predecessors, (3697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:23:46,218 INFO L276 IsEmpty]: Start isEmpty. Operand 7529 states and 11281 transitions. [2024-11-23 23:23:46,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3699 [2024-11-23 23:23:46,423 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:23:46,427 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1] [2024-11-23 23:23:46,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 23:23:46,428 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:23:46,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:23:46,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1211983630, now seen corresponding path program 1 times [2024-11-23 23:23:46,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:23:46,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644581026] [2024-11-23 23:23:46,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:23:46,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:23:50,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:23:57,226 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 422 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:23:57,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:23:57,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644581026] [2024-11-23 23:23:57,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644581026] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:23:57,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:23:57,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:23:57,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114834065] [2024-11-23 23:23:57,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:23:57,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:23:57,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:23:57,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:23:57,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:23:57,235 INFO L87 Difference]: Start difference. First operand 7529 states and 11281 transitions. Second operand has 4 states, 4 states have (on average 924.5) internal successors, (3698), 4 states have internal predecessors, (3698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:23:58,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:23:58,641 INFO L93 Difference]: Finished difference Result 14016 states and 21000 transitions. [2024-11-23 23:23:58,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:23:58,642 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 924.5) internal successors, (3698), 4 states have internal predecessors, (3698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3698 [2024-11-23 23:23:58,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:23:58,670 INFO L225 Difference]: With dead ends: 14016 [2024-11-23 23:23:58,670 INFO L226 Difference]: Without dead ends: 7529 [2024-11-23 23:23:58,682 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:23:58,684 INFO L435 NwaCegarLoop]: 9502 mSDtfsCounter, 9464 mSDsluCounter, 9496 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9464 SdHoareTripleChecker+Valid, 18998 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:23:58,684 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9464 Valid, 18998 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-23 23:23:58,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7529 states. [2024-11-23 23:23:58,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7529 to 7529. [2024-11-23 23:23:58,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7529 states, 7528 states have (on average 1.4982731137088203) internal successors, (11279), 7528 states have internal predecessors, (11279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:23:58,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7529 states to 7529 states and 11279 transitions. [2024-11-23 23:23:58,853 INFO L78 Accepts]: Start accepts. Automaton has 7529 states and 11279 transitions. Word has length 3698 [2024-11-23 23:23:58,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:23:58,854 INFO L471 AbstractCegarLoop]: Abstraction has 7529 states and 11279 transitions. [2024-11-23 23:23:58,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 924.5) internal successors, (3698), 4 states have internal predecessors, (3698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:23:58,855 INFO L276 IsEmpty]: Start isEmpty. Operand 7529 states and 11279 transitions. [2024-11-23 23:23:58,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3700 [2024-11-23 23:23:58,955 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:23:58,958 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:23:58,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 23:23:58,959 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:23:58,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:23:58,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1775913713, now seen corresponding path program 1 times [2024-11-23 23:23:58,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:23:58,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678885733] [2024-11-23 23:23:58,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:23:58,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:24:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:24:08,277 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 422 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:24:08,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:24:08,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678885733] [2024-11-23 23:24:08,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678885733] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:24:08,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:24:08,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:24:08,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161812688] [2024-11-23 23:24:08,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:24:08,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:24:08,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:24:08,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:24:08,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:24:08,282 INFO L87 Difference]: Start difference. First operand 7529 states and 11279 transitions. Second operand has 5 states, 5 states have (on average 739.8) internal successors, (3699), 5 states have internal predecessors, (3699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:24:08,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:24:08,432 INFO L93 Difference]: Finished difference Result 14017 states and 20998 transitions. [2024-11-23 23:24:08,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:24:08,433 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 739.8) internal successors, (3699), 5 states have internal predecessors, (3699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3699 [2024-11-23 23:24:08,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:24:08,441 INFO L225 Difference]: With dead ends: 14017 [2024-11-23 23:24:08,441 INFO L226 Difference]: Without dead ends: 7530 [2024-11-23 23:24:08,446 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:24:08,447 INFO L435 NwaCegarLoop]: 10000 mSDtfsCounter, 9472 mSDsluCounter, 19995 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9472 SdHoareTripleChecker+Valid, 29995 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:24:08,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9472 Valid, 29995 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:24:08,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7530 states. [2024-11-23 23:24:08,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7530 to 7530. [2024-11-23 23:24:08,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7530 states, 7529 states have (on average 1.498206933191659) internal successors, (11280), 7529 states have internal predecessors, (11280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:24:08,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7530 states to 7530 states and 11280 transitions. [2024-11-23 23:24:08,538 INFO L78 Accepts]: Start accepts. Automaton has 7530 states and 11280 transitions. Word has length 3699 [2024-11-23 23:24:08,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:24:08,539 INFO L471 AbstractCegarLoop]: Abstraction has 7530 states and 11280 transitions. [2024-11-23 23:24:08,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 739.8) internal successors, (3699), 5 states have internal predecessors, (3699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:24:08,541 INFO L276 IsEmpty]: Start isEmpty. Operand 7530 states and 11280 transitions. [2024-11-23 23:24:08,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3700 [2024-11-23 23:24:08,626 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:24:08,628 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:24:08,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 23:24:08,628 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:24:08,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:24:08,631 INFO L85 PathProgramCache]: Analyzing trace with hash 596453583, now seen corresponding path program 1 times [2024-11-23 23:24:08,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:24:08,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577442466] [2024-11-23 23:24:08,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:24:08,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:24:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:24:17,897 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 422 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:24:17,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:24:17,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577442466] [2024-11-23 23:24:17,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577442466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:24:17,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:24:17,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:24:17,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126726265] [2024-11-23 23:24:17,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:24:17,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:24:17,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:24:17,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:24:17,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:24:17,908 INFO L87 Difference]: Start difference. First operand 7530 states and 11280 transitions. Second operand has 5 states, 5 states have (on average 739.8) internal successors, (3699), 5 states have internal predecessors, (3699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:24:18,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:24:18,652 INFO L93 Difference]: Finished difference Result 14018 states and 20998 transitions. [2024-11-23 23:24:18,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:24:18,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 739.8) internal successors, (3699), 5 states have internal predecessors, (3699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3699 [2024-11-23 23:24:18,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:24:18,660 INFO L225 Difference]: With dead ends: 14018 [2024-11-23 23:24:18,660 INFO L226 Difference]: Without dead ends: 7530 [2024-11-23 23:24:18,664 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:24:18,665 INFO L435 NwaCegarLoop]: 9683 mSDtfsCounter, 19379 mSDsluCounter, 9680 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19379 SdHoareTripleChecker+Valid, 19363 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:24:18,665 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19379 Valid, 19363 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 23:24:18,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7530 states. [2024-11-23 23:24:18,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7530 to 7530. [2024-11-23 23:24:18,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7530 states, 7529 states have (on average 1.4980741134280782) internal successors, (11279), 7529 states have internal predecessors, (11279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:24:18,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7530 states to 7530 states and 11279 transitions. [2024-11-23 23:24:18,798 INFO L78 Accepts]: Start accepts. Automaton has 7530 states and 11279 transitions. Word has length 3699 [2024-11-23 23:24:18,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:24:18,800 INFO L471 AbstractCegarLoop]: Abstraction has 7530 states and 11279 transitions. [2024-11-23 23:24:18,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 739.8) internal successors, (3699), 5 states have internal predecessors, (3699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:24:18,801 INFO L276 IsEmpty]: Start isEmpty. Operand 7530 states and 11279 transitions. [2024-11-23 23:24:18,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3701 [2024-11-23 23:24:18,996 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:24:18,998 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:24:18,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 23:24:18,999 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:24:19,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:24:19,001 INFO L85 PathProgramCache]: Analyzing trace with hash 971807297, now seen corresponding path program 1 times [2024-11-23 23:24:19,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:24:19,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356370925] [2024-11-23 23:24:19,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:24:19,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:24:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:24:27,437 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 422 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:24:27,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:24:27,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356370925] [2024-11-23 23:24:27,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356370925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:24:27,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:24:27,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:24:27,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144601880] [2024-11-23 23:24:27,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:24:27,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:24:27,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:24:27,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:24:27,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:24:27,444 INFO L87 Difference]: Start difference. First operand 7530 states and 11279 transitions. Second operand has 4 states, 4 states have (on average 925.0) internal successors, (3700), 4 states have internal predecessors, (3700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:24:28,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:24:28,438 INFO L93 Difference]: Finished difference Result 14018 states and 20996 transitions. [2024-11-23 23:24:28,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:24:28,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 925.0) internal successors, (3700), 4 states have internal predecessors, (3700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3700 [2024-11-23 23:24:28,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:24:28,447 INFO L225 Difference]: With dead ends: 14018 [2024-11-23 23:24:28,447 INFO L226 Difference]: Without dead ends: 7530 [2024-11-23 23:24:28,453 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:24:28,453 INFO L435 NwaCegarLoop]: 9501 mSDtfsCounter, 9413 mSDsluCounter, 9495 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9413 SdHoareTripleChecker+Valid, 18996 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:24:28,453 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9413 Valid, 18996 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 23:24:28,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7530 states. [2024-11-23 23:24:28,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7530 to 7530. [2024-11-23 23:24:28,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7530 states, 7529 states have (on average 1.4978084739009165) internal successors, (11277), 7529 states have internal predecessors, (11277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:24:28,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7530 states to 7530 states and 11277 transitions. [2024-11-23 23:24:28,555 INFO L78 Accepts]: Start accepts. Automaton has 7530 states and 11277 transitions. Word has length 3700 [2024-11-23 23:24:28,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:24:28,556 INFO L471 AbstractCegarLoop]: Abstraction has 7530 states and 11277 transitions. [2024-11-23 23:24:28,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 925.0) internal successors, (3700), 4 states have internal predecessors, (3700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:24:28,558 INFO L276 IsEmpty]: Start isEmpty. Operand 7530 states and 11277 transitions. [2024-11-23 23:24:28,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3702 [2024-11-23 23:24:28,753 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:24:28,756 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:24:28,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 23:24:28,756 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:24:28,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:24:28,759 INFO L85 PathProgramCache]: Analyzing trace with hash 336777607, now seen corresponding path program 1 times [2024-11-23 23:24:28,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:24:28,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208172347] [2024-11-23 23:24:28,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:24:28,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:24:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:24:38,447 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 422 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:24:38,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:24:38,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208172347] [2024-11-23 23:24:38,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208172347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:24:38,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:24:38,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:24:38,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959935532] [2024-11-23 23:24:38,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:24:38,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:24:38,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:24:38,454 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:24:38,454 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:24:38,455 INFO L87 Difference]: Start difference. First operand 7530 states and 11277 transitions. Second operand has 5 states, 5 states have (on average 740.2) internal successors, (3701), 5 states have internal predecessors, (3701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:24:38,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:24:38,828 INFO L93 Difference]: Finished difference Result 14019 states and 20994 transitions. [2024-11-23 23:24:38,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:24:38,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 740.2) internal successors, (3701), 5 states have internal predecessors, (3701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3701 [2024-11-23 23:24:38,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:24:38,834 INFO L225 Difference]: With dead ends: 14019 [2024-11-23 23:24:38,834 INFO L226 Difference]: Without dead ends: 7531 [2024-11-23 23:24:38,838 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:24:38,839 INFO L435 NwaCegarLoop]: 9995 mSDtfsCounter, 9421 mSDsluCounter, 19985 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9421 SdHoareTripleChecker+Valid, 29980 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:24:38,839 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9421 Valid, 29980 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:24:38,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7531 states. [2024-11-23 23:24:38,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7531 to 7531. [2024-11-23 23:24:38,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7531 states, 7530 states have (on average 1.497742363877822) internal successors, (11278), 7530 states have internal predecessors, (11278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:24:38,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7531 states to 7531 states and 11278 transitions. [2024-11-23 23:24:38,928 INFO L78 Accepts]: Start accepts. Automaton has 7531 states and 11278 transitions. Word has length 3701 [2024-11-23 23:24:38,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:24:38,929 INFO L471 AbstractCegarLoop]: Abstraction has 7531 states and 11278 transitions. [2024-11-23 23:24:38,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 740.2) internal successors, (3701), 5 states have internal predecessors, (3701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:24:38,930 INFO L276 IsEmpty]: Start isEmpty. Operand 7531 states and 11278 transitions. [2024-11-23 23:24:39,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3702 [2024-11-23 23:24:39,106 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:24:39,108 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:24:39,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 23:24:39,109 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:24:39,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:24:39,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1318398649, now seen corresponding path program 1 times [2024-11-23 23:24:39,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:24:39,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956475835] [2024-11-23 23:24:39,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:24:39,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:24:42,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:24:47,579 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 422 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:24:47,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:24:47,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956475835] [2024-11-23 23:24:47,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956475835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:24:47,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:24:47,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:24:47,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130967844] [2024-11-23 23:24:47,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:24:47,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:24:47,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:24:47,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:24:47,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:24:47,587 INFO L87 Difference]: Start difference. First operand 7531 states and 11278 transitions. Second operand has 5 states, 5 states have (on average 740.2) internal successors, (3701), 5 states have internal predecessors, (3701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:24:48,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:24:48,265 INFO L93 Difference]: Finished difference Result 14019 states and 20993 transitions. [2024-11-23 23:24:48,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:24:48,266 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 740.2) internal successors, (3701), 5 states have internal predecessors, (3701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3701 [2024-11-23 23:24:48,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:24:48,269 INFO L225 Difference]: With dead ends: 14019 [2024-11-23 23:24:48,269 INFO L226 Difference]: Without dead ends: 7530 [2024-11-23 23:24:48,272 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:24:48,273 INFO L435 NwaCegarLoop]: 9683 mSDtfsCounter, 9949 mSDsluCounter, 9681 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9949 SdHoareTripleChecker+Valid, 19364 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:24:48,273 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9949 Valid, 19364 Invalid, 663 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 23:24:48,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7530 states. [2024-11-23 23:24:48,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7530 to 7530. [2024-11-23 23:24:48,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7530 states, 7529 states have (on average 1.4976756541373357) internal successors, (11276), 7529 states have internal predecessors, (11276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:24:48,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7530 states to 7530 states and 11276 transitions. [2024-11-23 23:24:48,357 INFO L78 Accepts]: Start accepts. Automaton has 7530 states and 11276 transitions. Word has length 3701 [2024-11-23 23:24:48,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:24:48,357 INFO L471 AbstractCegarLoop]: Abstraction has 7530 states and 11276 transitions. [2024-11-23 23:24:48,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 740.2) internal successors, (3701), 5 states have internal predecessors, (3701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:24:48,358 INFO L276 IsEmpty]: Start isEmpty. Operand 7530 states and 11276 transitions. [2024-11-23 23:24:48,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3703 [2024-11-23 23:24:48,447 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:24:48,449 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:24:48,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 23:24:48,450 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:24:48,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:24:48,452 INFO L85 PathProgramCache]: Analyzing trace with hash -257003791, now seen corresponding path program 1 times [2024-11-23 23:24:48,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:24:48,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21244659] [2024-11-23 23:24:48,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:24:48,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:24:50,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:24:55,979 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 422 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:24:55,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:24:55,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21244659] [2024-11-23 23:24:55,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21244659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:24:55,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:24:55,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:24:55,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908989670] [2024-11-23 23:24:55,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:24:55,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:24:55,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:24:55,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:24:55,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:24:55,987 INFO L87 Difference]: Start difference. First operand 7530 states and 11276 transitions. Second operand has 5 states, 5 states have (on average 740.4) internal successors, (3702), 5 states have internal predecessors, (3702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:24:57,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:24:57,106 INFO L93 Difference]: Finished difference Result 14018 states and 20990 transitions. [2024-11-23 23:24:57,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:24:57,107 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 740.4) internal successors, (3702), 5 states have internal predecessors, (3702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3702 [2024-11-23 23:24:57,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:24:57,112 INFO L225 Difference]: With dead ends: 14018 [2024-11-23 23:24:57,112 INFO L226 Difference]: Without dead ends: 7530 [2024-11-23 23:24:57,116 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:24:57,116 INFO L435 NwaCegarLoop]: 9500 mSDtfsCounter, 19868 mSDsluCounter, 9495 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19868 SdHoareTripleChecker+Valid, 18995 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:24:57,116 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19868 Valid, 18995 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 23:24:57,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7530 states. [2024-11-23 23:24:57,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7530 to 7530. [2024-11-23 23:24:57,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7530 states, 7529 states have (on average 1.497410014610174) internal successors, (11274), 7529 states have internal predecessors, (11274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:24:57,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7530 states to 7530 states and 11274 transitions. [2024-11-23 23:24:57,203 INFO L78 Accepts]: Start accepts. Automaton has 7530 states and 11274 transitions. Word has length 3702 [2024-11-23 23:24:57,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:24:57,204 INFO L471 AbstractCegarLoop]: Abstraction has 7530 states and 11274 transitions. [2024-11-23 23:24:57,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 740.4) internal successors, (3702), 5 states have internal predecessors, (3702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:24:57,205 INFO L276 IsEmpty]: Start isEmpty. Operand 7530 states and 11274 transitions. [2024-11-23 23:24:57,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3704 [2024-11-23 23:24:57,293 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:24:57,295 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:24:57,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 23:24:57,295 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:24:57,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:24:57,298 INFO L85 PathProgramCache]: Analyzing trace with hash 5999327, now seen corresponding path program 1 times [2024-11-23 23:24:57,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:24:57,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161844307] [2024-11-23 23:24:57,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:24:57,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:25:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat