./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-86.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_68c76e12-ec67-4752-9053-3a1071ff9ded/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c76e12-ec67-4752-9053-3a1071ff9ded/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_68c76e12-ec67-4752-9053-3a1071ff9ded/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c76e12-ec67-4752-9053-3a1071ff9ded/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-86.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c76e12-ec67-4752-9053-3a1071ff9ded/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c76e12-ec67-4752-9053-3a1071ff9ded/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 32bit --witnessprinter.graph.data.programhash 56df4eb5f1ce718ca5531ff4f8afda450f18f02286533668c4676eba9d6cba09 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:53:26,347 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:53:26,406 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c76e12-ec67-4752-9053-3a1071ff9ded/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 01:53:26,411 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:53:26,411 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:53:26,436 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:53:26,436 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:53:26,437 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:53:26,437 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:53:26,437 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:53:26,437 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:53:26,437 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:53:26,438 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:53:26,438 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:53:26,438 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:53:26,438 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:53:26,438 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:53:26,439 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:53:26,439 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:53:26,439 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:53:26,439 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:53:26,439 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:53:26,439 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:53:26,439 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:53:26,440 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:53:26,440 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:53:26,440 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:53:26,440 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:53:26,440 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:53:26,440 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:53:26,440 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:53:26,441 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:53:26,441 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:53:26,441 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:53:26,441 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:53:26,441 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:53:26,441 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:53:26,441 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:53:26,442 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:53:26,442 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:53:26,442 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:53:26,442 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:53:26,442 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:53:26,442 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:53:26,442 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:53:26,443 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:53:26,443 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:53:26,443 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:53:26,443 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_68c76e12-ec67-4752-9053-3a1071ff9ded/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 56df4eb5f1ce718ca5531ff4f8afda450f18f02286533668c4676eba9d6cba09 [2024-11-24 01:53:26,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:53:26,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:53:26,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:53:26,749 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:53:26,749 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:53:26,750 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c76e12-ec67-4752-9053-3a1071ff9ded/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-86.i [2024-11-24 01:53:29,651 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c76e12-ec67-4752-9053-3a1071ff9ded/bin/uautomizer-verify-LYvppIcaGC/data/621b33cf9/f569804527364f2eacaa6dd951dfb3ce/FLAGb6c610e9a [2024-11-24 01:53:29,905 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:53:29,909 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c76e12-ec67-4752-9053-3a1071ff9ded/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-86.i [2024-11-24 01:53:29,922 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c76e12-ec67-4752-9053-3a1071ff9ded/bin/uautomizer-verify-LYvppIcaGC/data/621b33cf9/f569804527364f2eacaa6dd951dfb3ce/FLAGb6c610e9a [2024-11-24 01:53:30,206 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c76e12-ec67-4752-9053-3a1071ff9ded/bin/uautomizer-verify-LYvppIcaGC/data/621b33cf9/f569804527364f2eacaa6dd951dfb3ce [2024-11-24 01:53:30,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:53:30,209 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:53:30,210 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:53:30,210 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:53:30,214 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:53:30,215 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:53:30" (1/1) ... [2024-11-24 01:53:30,216 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e0f1223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:30, skipping insertion in model container [2024-11-24 01:53:30,216 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:53:30" (1/1) ... [2024-11-24 01:53:30,235 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:53:30,364 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_68c76e12-ec67-4752-9053-3a1071ff9ded/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-86.i[919,932] [2024-11-24 01:53:30,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:53:30,462 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:53:30,472 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_68c76e12-ec67-4752-9053-3a1071ff9ded/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-86.i[919,932] [2024-11-24 01:53:30,508 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:53:30,526 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:53:30,526 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:30 WrapperNode [2024-11-24 01:53:30,526 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:53:30,527 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:53:30,527 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:53:30,528 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:53:30,541 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:30" (1/1) ... [2024-11-24 01:53:30,550 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:30" (1/1) ... [2024-11-24 01:53:30,608 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 247 [2024-11-24 01:53:30,609 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:53:30,609 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:53:30,609 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:53:30,609 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:53:30,627 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:30" (1/1) ... [2024-11-24 01:53:30,628 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:30" (1/1) ... [2024-11-24 01:53:30,633 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:30" (1/1) ... [2024-11-24 01:53:30,671 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]. [2024-11-24 01:53:30,671 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:30" (1/1) ... [2024-11-24 01:53:30,671 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:30" (1/1) ... [2024-11-24 01:53:30,687 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:30" (1/1) ... [2024-11-24 01:53:30,688 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:30" (1/1) ... [2024-11-24 01:53:30,696 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:30" (1/1) ... [2024-11-24 01:53:30,698 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:30" (1/1) ... [2024-11-24 01:53:30,700 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:30" (1/1) ... [2024-11-24 01:53:30,708 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:53:30,709 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:53:30,709 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:53:30,709 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:53:30,714 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:30" (1/1) ... [2024-11-24 01:53:30,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:53:30,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c76e12-ec67-4752-9053-3a1071ff9ded/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:53:30,757 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c76e12-ec67-4752-9053-3a1071ff9ded/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:53:30,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c76e12-ec67-4752-9053-3a1071ff9ded/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:53:30,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:53:30,785 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 01:53:30,785 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 01:53:30,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:53:30,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:53:30,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:53:30,875 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:53:30,876 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:53:31,499 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2024-11-24 01:53:31,499 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:53:31,515 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:53:31,516 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 01:53:31,516 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:53:31 BoogieIcfgContainer [2024-11-24 01:53:31,516 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:53:31,518 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:53:31,518 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:53:31,524 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:53:31,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:53:30" (1/3) ... [2024-11-24 01:53:31,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2552eb88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:53:31, skipping insertion in model container [2024-11-24 01:53:31,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:30" (2/3) ... [2024-11-24 01:53:31,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2552eb88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:53:31, skipping insertion in model container [2024-11-24 01:53:31,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:53:31" (3/3) ... [2024-11-24 01:53:31,527 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-cn_file-86.i [2024-11-24 01:53:31,543 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:53:31,544 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pr-cn_file-86.i that has 2 procedures, 103 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 01:53:31,615 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:53:31,628 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;@79a32c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:53:31,628 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:53:31,634 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 69 states have (on average 1.4782608695652173) internal successors, (102), 70 states have internal predecessors, (102), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-24 01:53:31,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-24 01:53:31,655 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:31,657 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:53:31,657 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:31,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:31,664 INFO L85 PathProgramCache]: Analyzing trace with hash 690971058, now seen corresponding path program 1 times [2024-11-24 01:53:31,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:31,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602139287] [2024-11-24 01:53:31,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:31,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:32,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2024-11-24 01:53:32,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:32,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602139287] [2024-11-24 01:53:32,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602139287] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:53:32,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544716940] [2024-11-24 01:53:32,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:32,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:53:32,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c76e12-ec67-4752-9053-3a1071ff9ded/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:53:32,055 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c76e12-ec67-4752-9053-3a1071ff9ded/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:53:32,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c76e12-ec67-4752-9053-3a1071ff9ded/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:53:32,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:32,314 INFO L256 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 01:53:32,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:53:32,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2024-11-24 01:53:32,357 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:53:32,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544716940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:53:32,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:53:32,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 01:53:32,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349479236] [2024-11-24 01:53:32,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:53:32,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 01:53:32,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:32,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 01:53:32,392 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:53:32,397 INFO L87 Difference]: Start difference. First operand has 103 states, 69 states have (on average 1.4782608695652173) internal successors, (102), 70 states have internal predecessors, (102), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-24 01:53:32,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:32,427 INFO L93 Difference]: Finished difference Result 199 states and 353 transitions. [2024-11-24 01:53:32,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 01:53:32,429 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) Word has length 196 [2024-11-24 01:53:32,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:32,468 INFO L225 Difference]: With dead ends: 199 [2024-11-24 01:53:32,468 INFO L226 Difference]: Without dead ends: 99 [2024-11-24 01:53:32,472 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:53:32,478 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:53:32,480 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:53:32,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-24 01:53:32,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-11-24 01:53:32,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 66 states have (on average 1.4242424242424243) internal successors, (94), 66 states have internal predecessors, (94), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-24 01:53:32,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 156 transitions. [2024-11-24 01:53:32,533 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 156 transitions. Word has length 196 [2024-11-24 01:53:32,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:32,534 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 156 transitions. [2024-11-24 01:53:32,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-24 01:53:32,534 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 156 transitions. [2024-11-24 01:53:32,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-24 01:53:32,540 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:32,540 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:53:32,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c76e12-ec67-4752-9053-3a1071ff9ded/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 01:53:32,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c76e12-ec67-4752-9053-3a1071ff9ded/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:53:32,741 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:32,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:32,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1419951696, now seen corresponding path program 1 times [2024-11-24 01:53:32,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:32,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636844997] [2024-11-24 01:53:32,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:32,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:32,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:33,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:53:33,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:33,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636844997] [2024-11-24 01:53:33,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636844997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:53:33,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:53:33,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:53:33,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707982296] [2024-11-24 01:53:33,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:53:33,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:53:33,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:33,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:53:33,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:53:33,236 INFO L87 Difference]: Start difference. First operand 99 states and 156 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:53:33,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:33,273 INFO L93 Difference]: Finished difference Result 196 states and 311 transitions. [2024-11-24 01:53:33,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:53:33,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 196 [2024-11-24 01:53:33,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:33,276 INFO L225 Difference]: With dead ends: 196 [2024-11-24 01:53:33,276 INFO L226 Difference]: Without dead ends: 100 [2024-11-24 01:53:33,281 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 [2024-11-24 01:53:33,281 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 0 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 304 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 [2024-11-24 01:53:33,282 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 304 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:53:33,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-24 01:53:33,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-11-24 01:53:33,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 67 states have (on average 1.4179104477611941) internal successors, (95), 67 states have internal predecessors, (95), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-24 01:53:33,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 157 transitions. [2024-11-24 01:53:33,296 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 157 transitions. Word has length 196 [2024-11-24 01:53:33,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:33,298 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 157 transitions. [2024-11-24 01:53:33,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:53:33,298 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 157 transitions. [2024-11-24 01:53:33,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-24 01:53:33,301 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:33,301 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:53:33,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:53:33,301 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:33,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:33,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1595151922, now seen corresponding path program 1 times [2024-11-24 01:53:33,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:33,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450193793] [2024-11-24 01:53:33,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:33,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:33,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:53:33,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:33,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450193793] [2024-11-24 01:53:33,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450193793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:53:33,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:53:33,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:53:33,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854202259] [2024-11-24 01:53:33,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:53:33,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:53:33,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:33,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:53:33,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:53:33,782 INFO L87 Difference]: Start difference. First operand 100 states and 157 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:53:34,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:34,176 INFO L93 Difference]: Finished difference Result 295 states and 466 transitions. [2024-11-24 01:53:34,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:53:34,181 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 196 [2024-11-24 01:53:34,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:34,184 INFO L225 Difference]: With dead ends: 295 [2024-11-24 01:53:34,184 INFO L226 Difference]: Without dead ends: 198 [2024-11-24 01:53:34,185 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:53:34,186 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 153 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:53:34,187 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 532 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:53:34,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-24 01:53:34,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 153. [2024-11-24 01:53:34,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 88 states have (on average 1.3181818181818181) internal successors, (116), 88 states have internal predecessors, (116), 62 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-24 01:53:34,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 240 transitions. [2024-11-24 01:53:34,231 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 240 transitions. Word has length 196 [2024-11-24 01:53:34,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:34,232 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 240 transitions. [2024-11-24 01:53:34,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:53:34,232 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 240 transitions. [2024-11-24 01:53:34,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-24 01:53:34,235 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:34,235 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:53:34,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 01:53:34,236 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:34,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:34,236 INFO L85 PathProgramCache]: Analyzing trace with hash 2017853748, now seen corresponding path program 1 times [2024-11-24 01:53:34,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:34,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769682571] [2024-11-24 01:53:34,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:34,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:41,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:53:41,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:41,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769682571] [2024-11-24 01:53:41,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769682571] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:53:41,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:53:41,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-24 01:53:41,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304882605] [2024-11-24 01:53:41,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:53:41,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-24 01:53:41,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:41,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-24 01:53:41,043 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:53:41,044 INFO L87 Difference]: Start difference. First operand 153 states and 240 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:53:42,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:42,703 INFO L93 Difference]: Finished difference Result 395 states and 618 transitions. [2024-11-24 01:53:42,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 01:53:42,704 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 196 [2024-11-24 01:53:42,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:42,707 INFO L225 Difference]: With dead ends: 395 [2024-11-24 01:53:42,707 INFO L226 Difference]: Without dead ends: 298 [2024-11-24 01:53:42,708 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2024-11-24 01:53:42,709 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 493 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 1321 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:53:42,709 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 1321 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-24 01:53:42,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-11-24 01:53:42,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 195. [2024-11-24 01:53:42,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 130 states have (on average 1.3923076923076922) internal successors, (181), 130 states have internal predecessors, (181), 62 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-24 01:53:42,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 305 transitions. [2024-11-24 01:53:42,736 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 305 transitions. Word has length 196 [2024-11-24 01:53:42,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:42,737 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 305 transitions. [2024-11-24 01:53:42,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:53:42,737 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 305 transitions. [2024-11-24 01:53:42,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-24 01:53:42,739 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:42,740 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:53:42,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 01:53:42,740 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:42,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:42,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1006736498, now seen corresponding path program 1 times [2024-11-24 01:53:42,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:42,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587560470] [2024-11-24 01:53:42,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:42,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:42,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:42,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:53:42,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:42,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587560470] [2024-11-24 01:53:42,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587560470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:53:42,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:53:42,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:53:42,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380089820] [2024-11-24 01:53:42,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:53:42,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:53:42,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:42,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:53:42,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:53:42,867 INFO L87 Difference]: Start difference. First operand 195 states and 305 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:53:42,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:42,934 INFO L93 Difference]: Finished difference Result 388 states and 611 transitions. [2024-11-24 01:53:42,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:53:42,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 196 [2024-11-24 01:53:42,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:42,937 INFO L225 Difference]: With dead ends: 388 [2024-11-24 01:53:42,937 INFO L226 Difference]: Without dead ends: 291 [2024-11-24 01:53:42,940 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 [2024-11-24 01:53:42,943 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 148 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:53:42,943 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 351 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:53:42,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-11-24 01:53:42,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 289. [2024-11-24 01:53:42,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 192 states have (on average 1.390625) internal successors, (267), 192 states have internal predecessors, (267), 93 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:53:42,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 453 transitions. [2024-11-24 01:53:42,997 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 453 transitions. Word has length 196 [2024-11-24 01:53:43,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:43,001 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 453 transitions. [2024-11-24 01:53:43,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:53:43,002 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 453 transitions. [2024-11-24 01:53:43,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-24 01:53:43,004 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:43,004 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:53:43,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 01:53:43,005 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:43,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:43,005 INFO L85 PathProgramCache]: Analyzing trace with hash -498753333, now seen corresponding path program 1 times [2024-11-24 01:53:43,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:43,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774528150] [2024-11-24 01:53:43,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:43,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:43,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:49,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:53:49,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:49,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774528150] [2024-11-24 01:53:49,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774528150] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:53:49,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:53:49,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-24 01:53:49,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315876611] [2024-11-24 01:53:49,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:53:49,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-24 01:53:49,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:49,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-24 01:53:49,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2024-11-24 01:53:49,996 INFO L87 Difference]: Start difference. First operand 289 states and 453 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:53:51,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:51,504 INFO L93 Difference]: Finished difference Result 376 states and 575 transitions. [2024-11-24 01:53:51,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-24 01:53:51,505 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 197 [2024-11-24 01:53:51,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:51,508 INFO L225 Difference]: With dead ends: 376 [2024-11-24 01:53:51,509 INFO L226 Difference]: Without dead ends: 374 [2024-11-24 01:53:51,509 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2024-11-24 01:53:51,512 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 698 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:53:51,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 1094 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 01:53:51,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2024-11-24 01:53:51,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 290. [2024-11-24 01:53:51,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 193 states have (on average 1.38860103626943) internal successors, (268), 193 states have internal predecessors, (268), 93 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:53:51,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 454 transitions. [2024-11-24 01:53:51,562 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 454 transitions. Word has length 197 [2024-11-24 01:53:51,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:51,563 INFO L471 AbstractCegarLoop]: Abstraction has 290 states and 454 transitions. [2024-11-24 01:53:51,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:53:51,563 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 454 transitions. [2024-11-24 01:53:51,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-24 01:53:51,568 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:51,568 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:53:51,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 01:53:51,568 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:51,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:51,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1514301425, now seen corresponding path program 1 times [2024-11-24 01:53:51,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:51,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649968209] [2024-11-24 01:53:51,569 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:51,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:51,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:53:51,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:51,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649968209] [2024-11-24 01:53:51,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649968209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:53:51,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:53:51,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:53:51,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107423602] [2024-11-24 01:53:51,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:53:51,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:53:51,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:51,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:53:51,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:53:51,868 INFO L87 Difference]: Start difference. First operand 290 states and 454 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:53:51,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:51,956 INFO L93 Difference]: Finished difference Result 504 states and 785 transitions. [2024-11-24 01:53:51,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:53:51,957 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 197 [2024-11-24 01:53:51,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:51,959 INFO L225 Difference]: With dead ends: 504 [2024-11-24 01:53:51,959 INFO L226 Difference]: Without dead ends: 310 [2024-11-24 01:53:51,960 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:53:51,961 INFO L435 NwaCegarLoop]: 171 mSDtfsCounter, 56 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:53:51,961 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 433 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:53:51,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2024-11-24 01:53:51,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 298. [2024-11-24 01:53:51,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 199 states have (on average 1.3618090452261307) internal successors, (271), 199 states have internal predecessors, (271), 93 states have call successors, (93), 5 states have call predecessors, (93), 5 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:53:51,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 457 transitions. [2024-11-24 01:53:52,000 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 457 transitions. Word has length 197 [2024-11-24 01:53:52,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:52,001 INFO L471 AbstractCegarLoop]: Abstraction has 298 states and 457 transitions. [2024-11-24 01:53:52,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:53:52,002 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 457 transitions. [2024-11-24 01:53:52,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-24 01:53:52,005 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:52,005 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:53:52,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 01:53:52,005 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:52,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:52,006 INFO L85 PathProgramCache]: Analyzing trace with hash 704954799, now seen corresponding path program 1 times [2024-11-24 01:53:52,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:52,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135681280] [2024-11-24 01:53:52,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:52,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:52,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:57,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:53:57,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:57,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135681280] [2024-11-24 01:53:57,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135681280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:53:57,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:53:57,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-24 01:53:57,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939813347] [2024-11-24 01:53:57,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:53:57,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-24 01:53:57,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:57,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-24 01:53:57,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2024-11-24 01:53:57,533 INFO L87 Difference]: Start difference. First operand 298 states and 457 transitions. Second operand has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-24 01:53:59,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:59,593 INFO L93 Difference]: Finished difference Result 391 states and 585 transitions. [2024-11-24 01:53:59,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-24 01:53:59,594 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 197 [2024-11-24 01:53:59,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:59,597 INFO L225 Difference]: With dead ends: 391 [2024-11-24 01:53:59,599 INFO L226 Difference]: Without dead ends: 389 [2024-11-24 01:53:59,599 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=319, Invalid=941, Unknown=0, NotChecked=0, Total=1260 [2024-11-24 01:53:59,600 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 551 mSDsluCounter, 1249 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:53:59,600 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 1400 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-24 01:53:59,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2024-11-24 01:53:59,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 298. [2024-11-24 01:53:59,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 199 states have (on average 1.3618090452261307) internal successors, (271), 199 states have internal predecessors, (271), 93 states have call successors, (93), 5 states have call predecessors, (93), 5 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:53:59,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 457 transitions. [2024-11-24 01:53:59,633 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 457 transitions. Word has length 197 [2024-11-24 01:53:59,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:59,634 INFO L471 AbstractCegarLoop]: Abstraction has 298 states and 457 transitions. [2024-11-24 01:53:59,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-24 01:53:59,634 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 457 transitions. [2024-11-24 01:53:59,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-24 01:53:59,638 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:59,638 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:53:59,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 01:53:59,639 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:59,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:59,639 INFO L85 PathProgramCache]: Analyzing trace with hash -383393271, now seen corresponding path program 1 times [2024-11-24 01:53:59,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:59,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984143905] [2024-11-24 01:53:59,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:59,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:54:05,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:54:05,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:54:05,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984143905] [2024-11-24 01:54:05,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984143905] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:54:05,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:54:05,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-24 01:54:05,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169433965] [2024-11-24 01:54:05,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:54:05,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-24 01:54:05,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:54:05,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-24 01:54:05,851 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2024-11-24 01:54:05,851 INFO L87 Difference]: Start difference. First operand 298 states and 457 transitions. Second operand has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:54:08,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:54:08,561 INFO L93 Difference]: Finished difference Result 416 states and 620 transitions. [2024-11-24 01:54:08,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-24 01:54:08,562 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 197 [2024-11-24 01:54:08,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:54:08,565 INFO L225 Difference]: With dead ends: 416 [2024-11-24 01:54:08,567 INFO L226 Difference]: Without dead ends: 414 [2024-11-24 01:54:08,567 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=321, Invalid=869, Unknown=0, NotChecked=0, Total=1190 [2024-11-24 01:54:08,569 INFO L435 NwaCegarLoop]: 158 mSDtfsCounter, 666 mSDsluCounter, 1028 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:54:08,570 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 1186 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-24 01:54:08,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2024-11-24 01:54:08,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 317. [2024-11-24 01:54:08,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 218 states have (on average 1.3761467889908257) internal successors, (300), 218 states have internal predecessors, (300), 93 states have call successors, (93), 5 states have call predecessors, (93), 5 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:54:08,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 486 transitions. [2024-11-24 01:54:08,610 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 486 transitions. Word has length 197 [2024-11-24 01:54:08,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:54:08,611 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 486 transitions. [2024-11-24 01:54:08,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:54:08,612 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 486 transitions. [2024-11-24 01:54:08,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-24 01:54:08,614 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:54:08,614 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:54:08,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 01:54:08,616 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:54:08,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:54:08,617 INFO L85 PathProgramCache]: Analyzing trace with hash -125227833, now seen corresponding path program 1 times [2024-11-24 01:54:08,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:54:08,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256881920] [2024-11-24 01:54:08,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:54:08,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:54:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:54:16,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:54:16,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:54:16,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256881920] [2024-11-24 01:54:16,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256881920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:54:16,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:54:16,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-24 01:54:16,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814789346] [2024-11-24 01:54:16,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:54:16,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-24 01:54:16,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:54:16,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-24 01:54:16,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2024-11-24 01:54:16,863 INFO L87 Difference]: Start difference. First operand 317 states and 486 transitions. Second operand has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:54:26,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:54:26,630 INFO L93 Difference]: Finished difference Result 410 states and 614 transitions. [2024-11-24 01:54:26,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-24 01:54:26,631 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 197 [2024-11-24 01:54:26,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:54:26,634 INFO L225 Difference]: With dead ends: 410 [2024-11-24 01:54:26,634 INFO L226 Difference]: Without dead ends: 408 [2024-11-24 01:54:26,634 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=332, Invalid=790, Unknown=0, NotChecked=0, Total=1122 [2024-11-24 01:54:26,635 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 481 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:54:26,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 1300 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-24 01:54:26,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2024-11-24 01:54:26,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 317. [2024-11-24 01:54:26,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 218 states have (on average 1.3761467889908257) internal successors, (300), 218 states have internal predecessors, (300), 93 states have call successors, (93), 5 states have call predecessors, (93), 5 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:54:26,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 486 transitions. [2024-11-24 01:54:26,663 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 486 transitions. Word has length 197 [2024-11-24 01:54:26,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:54:26,664 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 486 transitions. [2024-11-24 01:54:26,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:54:26,664 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 486 transitions. [2024-11-24 01:54:26,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-24 01:54:26,666 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:54:26,667 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:54:26,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 01:54:26,667 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:54:26,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:54:26,668 INFO L85 PathProgramCache]: Analyzing trace with hash -523749818, now seen corresponding path program 1 times [2024-11-24 01:54:26,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:54:26,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621388712] [2024-11-24 01:54:26,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:54:26,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:54:26,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:54:44,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:54:44,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:54:44,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621388712] [2024-11-24 01:54:44,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621388712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:54:44,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:54:44,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-24 01:54:44,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613258015] [2024-11-24 01:54:44,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:54:44,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-24 01:54:44,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:54:44,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-24 01:54:44,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2024-11-24 01:54:44,977 INFO L87 Difference]: Start difference. First operand 317 states and 486 transitions. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:54:57,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:54:57,326 INFO L93 Difference]: Finished difference Result 421 states and 629 transitions. [2024-11-24 01:54:57,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-24 01:54:57,327 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 198 [2024-11-24 01:54:57,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:54:57,330 INFO L225 Difference]: With dead ends: 421 [2024-11-24 01:54:57,330 INFO L226 Difference]: Without dead ends: 419 [2024-11-24 01:54:57,331 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=388, Invalid=1018, Unknown=0, NotChecked=0, Total=1406 [2024-11-24 01:54:57,331 INFO L435 NwaCegarLoop]: 181 mSDtfsCounter, 430 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:54:57,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 1423 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-24 01:54:57,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2024-11-24 01:54:57,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 336. [2024-11-24 01:54:57,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 237 states have (on average 1.3881856540084387) internal successors, (329), 237 states have internal predecessors, (329), 93 states have call successors, (93), 5 states have call predecessors, (93), 5 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:54:57,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 515 transitions. [2024-11-24 01:54:57,363 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 515 transitions. Word has length 198 [2024-11-24 01:54:57,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:54:57,364 INFO L471 AbstractCegarLoop]: Abstraction has 336 states and 515 transitions. [2024-11-24 01:54:57,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:54:57,365 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 515 transitions. [2024-11-24 01:54:57,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-24 01:54:57,367 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:54:57,367 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:54:57,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 01:54:57,368 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:54:57,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:54:57,368 INFO L85 PathProgramCache]: Analyzing trace with hash -265584380, now seen corresponding path program 1 times [2024-11-24 01:54:57,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:54:57,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838461594] [2024-11-24 01:54:57,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:54:57,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:54:57,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:13,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:55:13,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:13,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838461594] [2024-11-24 01:55:13,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838461594] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:55:13,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:55:13,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-24 01:55:13,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477491461] [2024-11-24 01:55:13,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:55:13,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-24 01:55:13,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:13,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-24 01:55:13,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2024-11-24 01:55:13,824 INFO L87 Difference]: Start difference. First operand 336 states and 515 transitions. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:55:26,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:26,604 INFO L93 Difference]: Finished difference Result 415 states and 623 transitions. [2024-11-24 01:55:26,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-24 01:55:26,605 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 198 [2024-11-24 01:55:26,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:26,608 INFO L225 Difference]: With dead ends: 415 [2024-11-24 01:55:26,608 INFO L226 Difference]: Without dead ends: 413 [2024-11-24 01:55:26,609 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=387, Invalid=945, Unknown=0, NotChecked=0, Total=1332 [2024-11-24 01:55:26,609 INFO L435 NwaCegarLoop]: 181 mSDtfsCounter, 389 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:26,610 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 1563 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-24 01:55:26,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2024-11-24 01:55:26,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 333. [2024-11-24 01:55:26,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 234 states have (on average 1.3888888888888888) internal successors, (325), 234 states have internal predecessors, (325), 93 states have call successors, (93), 5 states have call predecessors, (93), 5 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:55:26,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 511 transitions. [2024-11-24 01:55:26,640 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 511 transitions. Word has length 198 [2024-11-24 01:55:26,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:26,641 INFO L471 AbstractCegarLoop]: Abstraction has 333 states and 511 transitions. [2024-11-24 01:55:26,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:55:26,641 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 511 transitions. [2024-11-24 01:55:26,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-24 01:55:26,642 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:26,643 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:55:26,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 01:55:26,643 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:26,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:26,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1751052208, now seen corresponding path program 1 times [2024-11-24 01:55:26,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:26,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618693378] [2024-11-24 01:55:26,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:26,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:30,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:55:30,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:30,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618693378] [2024-11-24 01:55:30,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618693378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:55:30,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:55:30,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-24 01:55:30,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113716096] [2024-11-24 01:55:30,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:55:30,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-24 01:55:30,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:30,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-24 01:55:30,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2024-11-24 01:55:30,209 INFO L87 Difference]: Start difference. First operand 333 states and 511 transitions. Second operand has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-24 01:55:31,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:31,703 INFO L93 Difference]: Finished difference Result 396 states and 594 transitions. [2024-11-24 01:55:31,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 01:55:31,704 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 198 [2024-11-24 01:55:31,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:31,706 INFO L225 Difference]: With dead ends: 396 [2024-11-24 01:55:31,706 INFO L226 Difference]: Without dead ends: 394 [2024-11-24 01:55:31,707 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=254, Invalid=802, Unknown=0, NotChecked=0, Total=1056 [2024-11-24 01:55:31,708 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 700 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1355 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:31,708 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1355 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 01:55:31,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2024-11-24 01:55:31,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 330. [2024-11-24 01:55:31,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 231 states have (on average 1.3896103896103895) internal successors, (321), 231 states have internal predecessors, (321), 93 states have call successors, (93), 5 states have call predecessors, (93), 5 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:55:31,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 507 transitions. [2024-11-24 01:55:31,737 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 507 transitions. Word has length 198 [2024-11-24 01:55:31,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:31,738 INFO L471 AbstractCegarLoop]: Abstraction has 330 states and 507 transitions. [2024-11-24 01:55:31,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-24 01:55:31,738 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 507 transitions. [2024-11-24 01:55:31,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-24 01:55:31,739 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:31,740 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:55:31,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 01:55:31,740 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:31,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:31,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1865708588, now seen corresponding path program 1 times [2024-11-24 01:55:31,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:31,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796004205] [2024-11-24 01:55:31,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:31,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:44,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:55:44,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:44,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796004205] [2024-11-24 01:55:44,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796004205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:55:44,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:55:44,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-24 01:55:44,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146327689] [2024-11-24 01:55:44,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:55:44,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-24 01:55:44,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:44,288 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-24 01:55:44,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2024-11-24 01:55:44,288 INFO L87 Difference]: Start difference. First operand 330 states and 507 transitions. Second operand has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 17 states have internal predecessors, (46), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:55:55,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:55,254 INFO L93 Difference]: Finished difference Result 418 states and 625 transitions. [2024-11-24 01:55:55,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-24 01:55:55,256 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 17 states have internal predecessors, (46), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 198 [2024-11-24 01:55:55,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:55,259 INFO L225 Difference]: With dead ends: 418 [2024-11-24 01:55:55,259 INFO L226 Difference]: Without dead ends: 416 [2024-11-24 01:55:55,260 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=337, Invalid=853, Unknown=0, NotChecked=0, Total=1190 [2024-11-24 01:55:55,261 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 665 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:55,261 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 1172 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-24 01:55:55,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2024-11-24 01:55:55,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 345. [2024-11-24 01:55:55,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 246 states have (on average 1.3983739837398375) internal successors, (344), 246 states have internal predecessors, (344), 93 states have call successors, (93), 5 states have call predecessors, (93), 5 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:55:55,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 530 transitions. [2024-11-24 01:55:55,288 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 530 transitions. Word has length 198 [2024-11-24 01:55:55,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:55,290 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 530 transitions. [2024-11-24 01:55:55,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 17 states have internal predecessors, (46), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:55:55,290 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 530 transitions. [2024-11-24 01:55:55,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-24 01:55:55,292 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:55,292 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:55:55,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 01:55:55,292 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:55,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:55,292 INFO L85 PathProgramCache]: Analyzing trace with hash -719258758, now seen corresponding path program 1 times [2024-11-24 01:55:55,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:55,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571805022] [2024-11-24 01:55:55,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:55,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:56:04,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:56:04,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:56:04,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571805022] [2024-11-24 01:56:04,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571805022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:56:04,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:56:04,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-24 01:56:04,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993118696] [2024-11-24 01:56:04,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:56:04,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-24 01:56:04,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:56:04,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-24 01:56:04,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2024-11-24 01:56:04,410 INFO L87 Difference]: Start difference. First operand 345 states and 530 transitions. Second operand has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 17 states have internal predecessors, (46), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:56:24,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:56:24,542 INFO L93 Difference]: Finished difference Result 425 states and 634 transitions. [2024-11-24 01:56:24,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-24 01:56:24,543 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 17 states have internal predecessors, (46), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 198 [2024-11-24 01:56:24,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:56:24,546 INFO L225 Difference]: With dead ends: 425 [2024-11-24 01:56:24,546 INFO L226 Difference]: Without dead ends: 423 [2024-11-24 01:56:24,547 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 20.4s TimeCoverageRelationStatistics Valid=446, Invalid=1114, Unknown=0, NotChecked=0, Total=1560 [2024-11-24 01:56:24,547 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 558 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 1268 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:56:24,548 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 1268 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-24 01:56:24,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2024-11-24 01:56:24,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 346. [2024-11-24 01:56:24,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 247 states have (on average 1.3967611336032388) internal successors, (345), 247 states have internal predecessors, (345), 93 states have call successors, (93), 5 states have call predecessors, (93), 5 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:56:24,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 531 transitions. [2024-11-24 01:56:24,578 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 531 transitions. Word has length 198 [2024-11-24 01:56:24,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:56:24,579 INFO L471 AbstractCegarLoop]: Abstraction has 346 states and 531 transitions. [2024-11-24 01:56:24,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 17 states have internal predecessors, (46), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:56:24,579 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 531 transitions. [2024-11-24 01:56:24,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-24 01:56:24,580 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:56:24,581 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:56:24,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 01:56:24,581 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:56:24,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:56:24,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1842452694, now seen corresponding path program 1 times [2024-11-24 01:56:24,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:56:24,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286412436] [2024-11-24 01:56:24,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:56:24,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:56:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:56:30,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:56:30,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:56:30,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286412436] [2024-11-24 01:56:30,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286412436] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:56:30,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:56:30,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-24 01:56:30,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147569281] [2024-11-24 01:56:30,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:56:30,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-24 01:56:30,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:56:30,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-24 01:56:30,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2024-11-24 01:56:30,667 INFO L87 Difference]: Start difference. First operand 346 states and 531 transitions. Second operand has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:56:33,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:56:33,864 INFO L93 Difference]: Finished difference Result 414 states and 621 transitions. [2024-11-24 01:56:33,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-24 01:56:33,865 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 198 [2024-11-24 01:56:33,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:56:33,866 INFO L225 Difference]: With dead ends: 414 [2024-11-24 01:56:33,866 INFO L226 Difference]: Without dead ends: 412 [2024-11-24 01:56:33,867 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=358, Invalid=902, Unknown=0, NotChecked=0, Total=1260 [2024-11-24 01:56:33,867 INFO L435 NwaCegarLoop]: 163 mSDtfsCounter, 651 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:56:33,867 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 1102 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-24 01:56:33,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2024-11-24 01:56:33,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 355. [2024-11-24 01:56:33,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 256 states have (on average 1.40625) internal successors, (360), 256 states have internal predecessors, (360), 93 states have call successors, (93), 5 states have call predecessors, (93), 5 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:56:33,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 546 transitions. [2024-11-24 01:56:33,898 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 546 transitions. Word has length 198 [2024-11-24 01:56:33,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:56:33,898 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 546 transitions. [2024-11-24 01:56:33,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:56:33,899 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 546 transitions. [2024-11-24 01:56:33,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-24 01:56:33,900 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:56:33,900 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:56:33,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-24 01:56:33,900 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:56:33,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:56:33,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1306064772, now seen corresponding path program 1 times [2024-11-24 01:56:33,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:56:33,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705416366] [2024-11-24 01:56:33,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:56:33,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:56:33,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:56:42,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:56:42,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:56:42,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705416366] [2024-11-24 01:56:42,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705416366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:56:42,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:56:42,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-24 01:56:42,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595815934] [2024-11-24 01:56:42,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:56:42,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-24 01:56:42,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:56:42,721 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-24 01:56:42,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2024-11-24 01:56:42,721 INFO L87 Difference]: Start difference. First operand 355 states and 546 transitions. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-24 01:56:52,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:56:52,701 INFO L93 Difference]: Finished difference Result 402 states and 604 transitions. [2024-11-24 01:56:52,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-24 01:56:52,702 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 198 [2024-11-24 01:56:52,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:56:52,704 INFO L225 Difference]: With dead ends: 402 [2024-11-24 01:56:52,704 INFO L226 Difference]: Without dead ends: 400 [2024-11-24 01:56:52,705 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=330, Invalid=1002, Unknown=0, NotChecked=0, Total=1332 [2024-11-24 01:56:52,706 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 507 mSDsluCounter, 1561 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 1731 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:56:52,706 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 1731 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1051 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-24 01:56:52,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2024-11-24 01:56:52,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 346. [2024-11-24 01:56:52,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 247 states have (on average 1.3967611336032388) internal successors, (345), 247 states have internal predecessors, (345), 93 states have call successors, (93), 5 states have call predecessors, (93), 5 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:56:52,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 531 transitions. [2024-11-24 01:56:52,736 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 531 transitions. Word has length 198 [2024-11-24 01:56:52,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:56:52,736 INFO L471 AbstractCegarLoop]: Abstraction has 346 states and 531 transitions. [2024-11-24 01:56:52,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-24 01:56:52,737 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 531 transitions. [2024-11-24 01:56:52,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-24 01:56:52,738 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:56:52,738 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:56:52,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-24 01:56:52,738 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:56:52,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:56:52,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1921794249, now seen corresponding path program 1 times [2024-11-24 01:56:52,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:56:52,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310810204] [2024-11-24 01:56:52,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:56:52,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:56:52,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:57:13,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:57:13,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:57:13,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310810204] [2024-11-24 01:57:13,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310810204] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:57:13,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:57:13,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-24 01:57:13,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826772729] [2024-11-24 01:57:13,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:57:13,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-24 01:57:13,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:57:13,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-24 01:57:13,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-24 01:57:13,355 INFO L87 Difference]: Start difference. First operand 346 states and 531 transitions. Second operand has 20 states, 20 states have (on average 2.35) internal successors, (47), 20 states have internal predecessors, (47), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:57:31,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:57:31,681 INFO L93 Difference]: Finished difference Result 419 states and 626 transitions. [2024-11-24 01:57:31,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-24 01:57:31,682 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 20 states have internal predecessors, (47), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 199 [2024-11-24 01:57:31,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:57:31,685 INFO L225 Difference]: With dead ends: 419 [2024-11-24 01:57:31,685 INFO L226 Difference]: Without dead ends: 417 [2024-11-24 01:57:31,686 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 22.6s TimeCoverageRelationStatistics Valid=428, Invalid=1132, Unknown=0, NotChecked=0, Total=1560 [2024-11-24 01:57:31,686 INFO L435 NwaCegarLoop]: 186 mSDtfsCounter, 483 mSDsluCounter, 1307 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:57:31,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 1493 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-24 01:57:31,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2024-11-24 01:57:31,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 355. [2024-11-24 01:57:31,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 256 states have (on average 1.40625) internal successors, (360), 256 states have internal predecessors, (360), 93 states have call successors, (93), 5 states have call predecessors, (93), 5 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:57:31,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 546 transitions. [2024-11-24 01:57:31,720 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 546 transitions. Word has length 199 [2024-11-24 01:57:31,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:57:31,721 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 546 transitions. [2024-11-24 01:57:31,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 20 states have internal predecessors, (47), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:57:31,721 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 546 transitions. [2024-11-24 01:57:31,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-24 01:57:31,723 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:57:31,723 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:57:31,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-24 01:57:31,723 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:57:31,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:57:31,724 INFO L85 PathProgramCache]: Analyzing trace with hash -775344419, now seen corresponding path program 1 times [2024-11-24 01:57:31,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:57:31,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780265631] [2024-11-24 01:57:31,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:57:31,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:57:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:57:48,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:57:48,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:57:48,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780265631] [2024-11-24 01:57:48,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780265631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:57:48,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:57:48,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-24 01:57:48,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542076566] [2024-11-24 01:57:48,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:57:48,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-24 01:57:48,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:57:48,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-24 01:57:48,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2024-11-24 01:57:48,493 INFO L87 Difference]: Start difference. First operand 355 states and 546 transitions. Second operand has 20 states, 20 states have (on average 2.35) internal successors, (47), 20 states have internal predecessors, (47), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:58:02,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:58:02,058 INFO L93 Difference]: Finished difference Result 419 states and 626 transitions. [2024-11-24 01:58:02,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-24 01:58:02,059 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 20 states have internal predecessors, (47), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 199 [2024-11-24 01:58:02,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:58:02,062 INFO L225 Difference]: With dead ends: 419 [2024-11-24 01:58:02,062 INFO L226 Difference]: Without dead ends: 417 [2024-11-24 01:58:02,063 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=432, Invalid=1128, Unknown=0, NotChecked=0, Total=1560 [2024-11-24 01:58:02,064 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 489 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:58:02,064 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 1247 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-24 01:58:02,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2024-11-24 01:58:02,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 346. [2024-11-24 01:58:02,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 247 states have (on average 1.3967611336032388) internal successors, (345), 247 states have internal predecessors, (345), 93 states have call successors, (93), 5 states have call predecessors, (93), 5 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:58:02,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 531 transitions. [2024-11-24 01:58:02,103 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 531 transitions. Word has length 199 [2024-11-24 01:58:02,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:58:02,104 INFO L471 AbstractCegarLoop]: Abstraction has 346 states and 531 transitions. [2024-11-24 01:58:02,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 20 states have internal predecessors, (47), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:58:02,104 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 531 transitions. [2024-11-24 01:58:02,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-24 01:58:02,106 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:58:02,106 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:58:02,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-24 01:58:02,107 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:58:02,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:58:02,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1786367033, now seen corresponding path program 1 times [2024-11-24 01:58:02,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:58:02,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008763816] [2024-11-24 01:58:02,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:58:02,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:58:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:58:24,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:58:24,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:58:24,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008763816] [2024-11-24 01:58:24,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008763816] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:58:24,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:58:24,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-24 01:58:24,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084619547] [2024-11-24 01:58:24,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:58:24,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-24 01:58:24,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:58:24,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-24 01:58:24,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2024-11-24 01:58:24,657 INFO L87 Difference]: Start difference. First operand 346 states and 531 transitions. Second operand has 20 states, 20 states have (on average 2.35) internal successors, (47), 20 states have internal predecessors, (47), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:58:42,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:58:42,644 INFO L93 Difference]: Finished difference Result 415 states and 622 transitions. [2024-11-24 01:58:42,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-24 01:58:42,645 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 20 states have internal predecessors, (47), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 199 [2024-11-24 01:58:42,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:58:42,647 INFO L225 Difference]: With dead ends: 415 [2024-11-24 01:58:42,647 INFO L226 Difference]: Without dead ends: 413 [2024-11-24 01:58:42,648 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 21.5s TimeCoverageRelationStatistics Valid=429, Invalid=1053, Unknown=0, NotChecked=0, Total=1482 [2024-11-24 01:58:42,649 INFO L435 NwaCegarLoop]: 186 mSDtfsCounter, 315 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:58:42,650 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 1509 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-11-24 01:58:42,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2024-11-24 01:58:42,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 346. [2024-11-24 01:58:42,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 247 states have (on average 1.3967611336032388) internal successors, (345), 247 states have internal predecessors, (345), 93 states have call successors, (93), 5 states have call predecessors, (93), 5 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:58:42,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 531 transitions. [2024-11-24 01:58:42,684 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 531 transitions. Word has length 199 [2024-11-24 01:58:42,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:58:42,684 INFO L471 AbstractCegarLoop]: Abstraction has 346 states and 531 transitions. [2024-11-24 01:58:42,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 20 states have internal predecessors, (47), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:58:42,685 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 531 transitions. [2024-11-24 01:58:42,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-24 01:58:42,686 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:58:42,687 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:58:42,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-24 01:58:42,687 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:58:42,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:58:42,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1362150433, now seen corresponding path program 1 times [2024-11-24 01:58:42,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:58:42,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726611683] [2024-11-24 01:58:42,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:58:42,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:58:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:58:58,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:58:58,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:58:58,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726611683] [2024-11-24 01:58:58,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726611683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:58:58,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:58:58,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-24 01:58:58,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867669910] [2024-11-24 01:58:58,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:58:58,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-24 01:58:58,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:58:58,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-24 01:58:58,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2024-11-24 01:58:58,354 INFO L87 Difference]: Start difference. First operand 346 states and 531 transitions. Second operand has 20 states, 20 states have (on average 2.35) internal successors, (47), 20 states have internal predecessors, (47), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:59:25,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:59:25,751 INFO L93 Difference]: Finished difference Result 414 states and 620 transitions. [2024-11-24 01:59:25,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-24 01:59:25,752 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 20 states have internal predecessors, (47), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 199 [2024-11-24 01:59:25,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:59:25,755 INFO L225 Difference]: With dead ends: 414 [2024-11-24 01:59:25,755 INFO L226 Difference]: Without dead ends: 412 [2024-11-24 01:59:25,756 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 27.2s TimeCoverageRelationStatistics Valid=553, Invalid=1339, Unknown=0, NotChecked=0, Total=1892 [2024-11-24 01:59:25,757 INFO L435 NwaCegarLoop]: 186 mSDtfsCounter, 322 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:59:25,757 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 1436 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2024-11-24 01:59:25,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2024-11-24 01:59:25,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 334. [2024-11-24 01:59:25,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 235 states have (on average 1.3872340425531915) internal successors, (326), 235 states have internal predecessors, (326), 93 states have call successors, (93), 5 states have call predecessors, (93), 5 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:59:25,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 512 transitions. [2024-11-24 01:59:25,796 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 512 transitions. Word has length 199 [2024-11-24 01:59:25,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:59:25,797 INFO L471 AbstractCegarLoop]: Abstraction has 334 states and 512 transitions. [2024-11-24 01:59:25,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 20 states have internal predecessors, (47), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:59:25,797 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 512 transitions. [2024-11-24 01:59:25,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-24 01:59:25,799 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:59:25,799 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:59:25,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-24 01:59:25,799 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:59:25,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:59:25,800 INFO L85 PathProgramCache]: Analyzing trace with hash 607363203, now seen corresponding path program 1 times [2024-11-24 01:59:25,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:59:25,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295128038] [2024-11-24 01:59:25,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:59:25,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:59:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:59:41,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:59:41,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:59:41,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295128038] [2024-11-24 01:59:41,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295128038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:59:41,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:59:41,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-24 01:59:41,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392156320] [2024-11-24 01:59:41,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:59:41,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-24 01:59:41,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:59:41,244 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-24 01:59:41,244 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2024-11-24 01:59:41,245 INFO L87 Difference]: Start difference. First operand 334 states and 512 transitions. Second operand has 20 states, 20 states have (on average 2.35) internal successors, (47), 20 states have internal predecessors, (47), 3 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2024-11-24 01:59:58,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:59:58,008 INFO L93 Difference]: Finished difference Result 418 states and 625 transitions. [2024-11-24 01:59:58,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-24 01:59:58,009 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 20 states have internal predecessors, (47), 3 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 199 [2024-11-24 01:59:58,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:59:58,012 INFO L225 Difference]: With dead ends: 418 [2024-11-24 01:59:58,013 INFO L226 Difference]: Without dead ends: 416 [2024-11-24 01:59:58,015 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 19.7s TimeCoverageRelationStatistics Valid=396, Invalid=1086, Unknown=0, NotChecked=0, Total=1482 [2024-11-24 01:59:58,017 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 836 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:59:58,018 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 1365 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-24 01:59:58,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2024-11-24 01:59:58,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 347. [2024-11-24 01:59:58,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 248 states have (on average 1.3951612903225807) internal successors, (346), 248 states have internal predecessors, (346), 93 states have call successors, (93), 5 states have call predecessors, (93), 5 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:59:58,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 532 transitions. [2024-11-24 01:59:58,058 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 532 transitions. Word has length 199 [2024-11-24 01:59:58,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:59:58,058 INFO L471 AbstractCegarLoop]: Abstraction has 347 states and 532 transitions. [2024-11-24 01:59:58,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 20 states have internal predecessors, (47), 3 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2024-11-24 01:59:58,059 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 532 transitions. [2024-11-24 01:59:58,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-24 01:59:58,060 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:59:58,061 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:59:58,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-24 01:59:58,061 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:59:58,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:59:58,062 INFO L85 PathProgramCache]: Analyzing trace with hash -403754047, now seen corresponding path program 1 times [2024-11-24 01:59:58,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:59:58,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801460166] [2024-11-24 01:59:58,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:59:58,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:59:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:00:11,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 02:00:11,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:00:11,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801460166] [2024-11-24 02:00:11,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801460166] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:00:11,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:00:11,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-11-24 02:00:11,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024055054] [2024-11-24 02:00:11,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:00:11,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-24 02:00:11,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:00:11,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-24 02:00:11,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2024-11-24 02:00:11,618 INFO L87 Difference]: Start difference. First operand 347 states and 532 transitions. Second operand has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-24 02:01:00,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:01:00,600 INFO L93 Difference]: Finished difference Result 666 states and 996 transitions. [2024-11-24 02:01:00,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-24 02:01:00,601 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 199 [2024-11-24 02:01:00,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:01:00,605 INFO L225 Difference]: With dead ends: 666 [2024-11-24 02:01:00,606 INFO L226 Difference]: Without dead ends: 664 [2024-11-24 02:01:00,607 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 968 ImplicationChecksByTransitivity, 45.3s TimeCoverageRelationStatistics Valid=872, Invalid=3034, Unknown=0, NotChecked=0, Total=3906 [2024-11-24 02:01:00,608 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 1193 mSDsluCounter, 1947 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 2204 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2024-11-24 02:01:00,608 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1193 Valid, 2204 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2024-11-24 02:01:00,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2024-11-24 02:01:00,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 452. [2024-11-24 02:01:00,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 320 states have (on average 1.390625) internal successors, (445), 320 states have internal predecessors, (445), 124 states have call successors, (124), 7 states have call predecessors, (124), 7 states have return successors, (124), 124 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-24 02:01:00,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 693 transitions. [2024-11-24 02:01:00,664 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 693 transitions. Word has length 199 [2024-11-24 02:01:00,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:01:00,665 INFO L471 AbstractCegarLoop]: Abstraction has 452 states and 693 transitions. [2024-11-24 02:01:00,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-24 02:01:00,665 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 693 transitions. [2024-11-24 02:01:00,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-24 02:01:00,667 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:01:00,667 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:01:00,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-24 02:01:00,667 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:01:00,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:01:00,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1131292288, now seen corresponding path program 1 times [2024-11-24 02:01:00,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:01:00,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265938520] [2024-11-24 02:01:00,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:01:00,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:01:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:01:22,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 02:01:22,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:01:22,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265938520] [2024-11-24 02:01:22,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265938520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:01:22,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:01:22,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-24 02:01:22,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19567859] [2024-11-24 02:01:22,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:01:22,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-24 02:01:22,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:01:22,326 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-24 02:01:22,326 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2024-11-24 02:01:22,326 INFO L87 Difference]: Start difference. First operand 452 states and 693 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 states have internal predecessors, (48), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 02:01:39,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:01:39,668 INFO L93 Difference]: Finished difference Result 527 states and 791 transitions. [2024-11-24 02:01:39,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-24 02:01:39,670 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 states have internal predecessors, (48), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 200 [2024-11-24 02:01:39,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:01:39,673 INFO L225 Difference]: With dead ends: 527 [2024-11-24 02:01:39,673 INFO L226 Difference]: Without dead ends: 525 [2024-11-24 02:01:39,674 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 22.3s TimeCoverageRelationStatistics Valid=445, Invalid=1115, Unknown=0, NotChecked=0, Total=1560 [2024-11-24 02:01:39,675 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 477 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 1458 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-24 02:01:39,676 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 1458 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-24 02:01:39,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2024-11-24 02:01:39,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 462. [2024-11-24 02:01:39,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 330 states have (on average 1.396969696969697) internal successors, (461), 330 states have internal predecessors, (461), 124 states have call successors, (124), 7 states have call predecessors, (124), 7 states have return successors, (124), 124 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-24 02:01:39,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 709 transitions. [2024-11-24 02:01:39,724 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 709 transitions. Word has length 200 [2024-11-24 02:01:39,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:01:39,725 INFO L471 AbstractCegarLoop]: Abstraction has 462 states and 709 transitions. [2024-11-24 02:01:39,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 states have internal predecessors, (48), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 02:01:39,725 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 709 transitions. [2024-11-24 02:01:39,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-24 02:01:39,727 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:01:39,727 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:01:39,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-24 02:01:39,727 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:01:39,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:01:39,728 INFO L85 PathProgramCache]: Analyzing trace with hash -2142409538, now seen corresponding path program 1 times [2024-11-24 02:01:39,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:01:39,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105581712] [2024-11-24 02:01:39,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:01:39,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:01:39,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:02:04,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 02:02:04,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:02:04,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105581712] [2024-11-24 02:02:04,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105581712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:02:04,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:02:04,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2024-11-24 02:02:04,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987051425] [2024-11-24 02:02:04,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:02:04,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-24 02:02:04,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:02:04,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-24 02:02:04,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2024-11-24 02:02:04,080 INFO L87 Difference]: Start difference. First operand 462 states and 709 transitions. Second operand has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 22 states have internal predecessors, (48), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-24 02:02:26,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:02:26,298 INFO L93 Difference]: Finished difference Result 515 states and 776 transitions. [2024-11-24 02:02:26,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-24 02:02:26,299 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 22 states have internal predecessors, (48), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 200 [2024-11-24 02:02:26,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:02:26,302 INFO L225 Difference]: With dead ends: 515 [2024-11-24 02:02:26,303 INFO L226 Difference]: Without dead ends: 513 [2024-11-24 02:02:26,304 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 26.1s TimeCoverageRelationStatistics Valid=455, Invalid=1267, Unknown=0, NotChecked=0, Total=1722 [2024-11-24 02:02:26,304 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 483 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2024-11-24 02:02:26,305 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 1720 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2024-11-24 02:02:26,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2024-11-24 02:02:26,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 450. [2024-11-24 02:02:26,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 318 states have (on average 1.389937106918239) internal successors, (442), 318 states have internal predecessors, (442), 124 states have call successors, (124), 7 states have call predecessors, (124), 7 states have return successors, (124), 124 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-24 02:02:26,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 690 transitions. [2024-11-24 02:02:26,350 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 690 transitions. Word has length 200 [2024-11-24 02:02:26,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:02:26,351 INFO L471 AbstractCegarLoop]: Abstraction has 450 states and 690 transitions. [2024-11-24 02:02:26,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 22 states have internal predecessors, (48), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-24 02:02:26,352 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 690 transitions. [2024-11-24 02:02:26,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2024-11-24 02:02:26,356 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:02:26,356 INFO L218 NwaCegarLoop]: trace histogram [62, 62, 62, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-24 02:02:26,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-24 02:02:26,356 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:02:26,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:02:26,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1060048766, now seen corresponding path program 1 times [2024-11-24 02:02:26,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:02:26,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450374938] [2024-11-24 02:02:26,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:02:26,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:02:26,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:02:39,580 INFO L134 CoverageAnalysis]: Checked inductivity of 7632 backedges. 5 proven. 63 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2024-11-24 02:02:39,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:02:39,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450374938] [2024-11-24 02:02:39,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450374938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:02:39,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761719223] [2024-11-24 02:02:39,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:02:39,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:02:39,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c76e12-ec67-4752-9053-3a1071ff9ded/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:02:39,587 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c76e12-ec67-4752-9053-3a1071ff9ded/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:02:39,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c76e12-ec67-4752-9053-3a1071ff9ded/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 02:02:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:02:40,235 INFO L256 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-11-24 02:02:40,258 INFO L279 TraceCheckSpWp]: Computing forward predicates...