./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_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_24c7a884-6943-4dce-8010-4bffd9417adb/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c7a884-6943-4dce-8010-4bffd9417adb/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_24c7a884-6943-4dce-8010-4bffd9417adb/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c7a884-6943-4dce-8010-4bffd9417adb/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-86.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c7a884-6943-4dce-8010-4bffd9417adb/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_24c7a884-6943-4dce-8010-4bffd9417adb/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 544492f8740cf75ba131482d8a9d3b25cda3fc17f885878b4449b23aaac08107 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:10:43,594 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:10:43,683 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c7a884-6943-4dce-8010-4bffd9417adb/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 01:10:43,690 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:10:43,690 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:10:43,731 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:10:43,733 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:10:43,733 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:10:43,734 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:10:43,734 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:10:43,736 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:10:43,736 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:10:43,736 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:10:43,736 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:10:43,737 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:10:43,737 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:10:43,737 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:10:43,737 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:10:43,737 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:10:43,738 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:10:43,738 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:10:43,738 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:10:43,739 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:10:43,739 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:10:43,739 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:10:43,739 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:10:43,739 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:10:43,739 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:10:43,739 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:10:43,740 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:10:43,740 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:10:43,740 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:10:43,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:10:43,740 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:10:43,740 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:10:43,741 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:10:43,741 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:10:43,742 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:10:43,742 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:10:43,742 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:10:43,742 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:10:43,742 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:10:43,742 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:10:43,743 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:10:43,743 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:10:43,743 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:10:43,743 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:10:43,743 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:10:43,743 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_24c7a884-6943-4dce-8010-4bffd9417adb/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 -> 544492f8740cf75ba131482d8a9d3b25cda3fc17f885878b4449b23aaac08107 [2024-11-24 01:10:44,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:10:44,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:10:44,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:10:44,088 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:10:44,089 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:10:44,090 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c7a884-6943-4dce-8010-4bffd9417adb/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-86.i [2024-11-24 01:10:47,120 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c7a884-6943-4dce-8010-4bffd9417adb/bin/uautomizer-verify-LYvppIcaGC/data/18c657283/cae06f1097ce48d8b7082f91f778ed7c/FLAG21bb8c549 [2024-11-24 01:10:47,393 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:10:47,397 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c7a884-6943-4dce-8010-4bffd9417adb/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-86.i [2024-11-24 01:10:47,408 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c7a884-6943-4dce-8010-4bffd9417adb/bin/uautomizer-verify-LYvppIcaGC/data/18c657283/cae06f1097ce48d8b7082f91f778ed7c/FLAG21bb8c549 [2024-11-24 01:10:47,689 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c7a884-6943-4dce-8010-4bffd9417adb/bin/uautomizer-verify-LYvppIcaGC/data/18c657283/cae06f1097ce48d8b7082f91f778ed7c [2024-11-24 01:10:47,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:10:47,693 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:10:47,694 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:10:47,694 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:10:47,699 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:10:47,700 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:10:47" (1/1) ... [2024-11-24 01:10:47,701 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c1380e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:10:47, skipping insertion in model container [2024-11-24 01:10:47,701 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:10:47" (1/1) ... [2024-11-24 01:10:47,728 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:10:47,928 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_24c7a884-6943-4dce-8010-4bffd9417adb/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-86.i[919,932] [2024-11-24 01:10:48,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:10:48,044 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:10:48,055 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_24c7a884-6943-4dce-8010-4bffd9417adb/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-86.i[919,932] [2024-11-24 01:10:48,092 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:10:48,112 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:10:48,112 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:10:48 WrapperNode [2024-11-24 01:10:48,113 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:10:48,114 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:10:48,114 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:10:48,114 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:10:48,122 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:10:48" (1/1) ... [2024-11-24 01:10:48,134 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:10:48" (1/1) ... [2024-11-24 01:10:48,217 INFO L138 Inliner]: procedures = 26, calls = 40, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 235 [2024-11-24 01:10:48,217 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:10:48,218 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:10:48,218 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:10:48,219 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:10:48,230 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:10:48" (1/1) ... [2024-11-24 01:10:48,231 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:10:48" (1/1) ... [2024-11-24 01:10:48,239 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:10:48" (1/1) ... [2024-11-24 01:10:48,271 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 01:10:48,271 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:10:48" (1/1) ... [2024-11-24 01:10:48,272 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:10:48" (1/1) ... [2024-11-24 01:10:48,291 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:10:48" (1/1) ... [2024-11-24 01:10:48,293 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:10:48" (1/1) ... [2024-11-24 01:10:48,302 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:10:48" (1/1) ... [2024-11-24 01:10:48,309 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:10:48" (1/1) ... [2024-11-24 01:10:48,314 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:10:48" (1/1) ... [2024-11-24 01:10:48,319 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:10:48,321 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:10:48,322 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:10:48,322 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:10:48,323 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:10:48" (1/1) ... [2024-11-24 01:10:48,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:10:48,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c7a884-6943-4dce-8010-4bffd9417adb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:10:48,367 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c7a884-6943-4dce-8010-4bffd9417adb/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:10:48,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c7a884-6943-4dce-8010-4bffd9417adb/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:10:48,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:10:48,409 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 01:10:48,409 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 01:10:48,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:10:48,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:10:48,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:10:48,509 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:10:48,511 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:10:49,263 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2024-11-24 01:10:49,263 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:10:49,280 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:10:49,280 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 01:10:49,281 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:10:49 BoogieIcfgContainer [2024-11-24 01:10:49,281 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:10:49,286 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:10:49,286 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:10:49,292 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:10:49,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:10:47" (1/3) ... [2024-11-24 01:10:49,293 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b93c79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:10:49, skipping insertion in model container [2024-11-24 01:10:49,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:10:48" (2/3) ... [2024-11-24 01:10:49,293 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b93c79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:10:49, skipping insertion in model container [2024-11-24 01:10:49,294 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:10:49" (3/3) ... [2024-11-24 01:10:49,295 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-ci_file-86.i [2024-11-24 01:10:49,312 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:10:49,314 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pr-ci_file-86.i that has 2 procedures, 97 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 01:10:49,392 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:10:49,405 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;@5b8552c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:10:49,405 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:10:49,411 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 67 states have (on average 1.492537313432836) internal successors, (100), 68 states have internal predecessors, (100), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-24 01:10:49,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-24 01:10:49,430 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:10:49,431 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:10:49,431 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:10:49,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:10:49,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1953080171, now seen corresponding path program 1 times [2024-11-24 01:10:49,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:10:49,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223078318] [2024-11-24 01:10:49,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:49,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:10:49,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:49,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2024-11-24 01:10:49,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:10:49,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223078318] [2024-11-24 01:10:49,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223078318] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:10:49,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600267675] [2024-11-24 01:10:49,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:49,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:10:49,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c7a884-6943-4dce-8010-4bffd9417adb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:10:49,882 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c7a884-6943-4dce-8010-4bffd9417adb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:10:49,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c7a884-6943-4dce-8010-4bffd9417adb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:10:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:50,130 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 01:10:50,139 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:10:50,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2024-11-24 01:10:50,192 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:10:50,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600267675] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:10:50,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:10:50,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 01:10:50,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567952014] [2024-11-24 01:10:50,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:10:50,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 01:10:50,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:10:50,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 01:10:50,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:10:50,234 INFO L87 Difference]: Start difference. First operand has 97 states, 67 states have (on average 1.492537313432836) internal successors, (100), 68 states have internal predecessors, (100), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-24 01:10:50,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:10:50,283 INFO L93 Difference]: Finished difference Result 187 states and 329 transitions. [2024-11-24 01:10:50,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 01:10:50,285 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) Word has length 174 [2024-11-24 01:10:50,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:10:50,295 INFO L225 Difference]: With dead ends: 187 [2024-11-24 01:10:50,295 INFO L226 Difference]: Without dead ends: 93 [2024-11-24 01:10:50,301 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 175 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 01:10:50,304 INFO L435 NwaCegarLoop]: 146 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, 146 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 01:10:50,308 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:10:50,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-24 01:10:50,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-24 01:10:50,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 64 states have (on average 1.4375) internal successors, (92), 64 states have internal predecessors, (92), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-24 01:10:50,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 146 transitions. [2024-11-24 01:10:50,385 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 146 transitions. Word has length 174 [2024-11-24 01:10:50,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:10:50,385 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 146 transitions. [2024-11-24 01:10:50,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-24 01:10:50,386 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 146 transitions. [2024-11-24 01:10:50,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-24 01:10:50,435 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:10:50,435 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:10:50,449 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c7a884-6943-4dce-8010-4bffd9417adb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 01:10:50,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c7a884-6943-4dce-8010-4bffd9417adb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-24 01:10:50,636 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:10:50,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:10:50,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1318480109, now seen corresponding path program 1 times [2024-11-24 01:10:50,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:10:50,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844597478] [2024-11-24 01:10:50,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:50,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:10:50,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:51,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-24 01:10:51,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:10:51,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844597478] [2024-11-24 01:10:51,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844597478] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:10:51,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:10:51,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:10:51,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868117764] [2024-11-24 01:10:51,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:10:51,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:10:51,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:10:51,239 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:10:51,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:10:51,240 INFO L87 Difference]: Start difference. First operand 93 states and 146 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-24 01:10:51,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:10:51,306 INFO L93 Difference]: Finished difference Result 184 states and 291 transitions. [2024-11-24 01:10:51,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:10:51,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 174 [2024-11-24 01:10:51,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:10:51,311 INFO L225 Difference]: With dead ends: 184 [2024-11-24 01:10:51,314 INFO L226 Difference]: Without dead ends: 94 [2024-11-24 01:10:51,315 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 01:10:51,316 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 0 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 284 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 01:10:51,316 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 284 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:10:51,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-24 01:10:51,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-24 01:10:51,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 65 states have (on average 1.4307692307692308) internal successors, (93), 65 states have internal predecessors, (93), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-24 01:10:51,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 147 transitions. [2024-11-24 01:10:51,344 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 147 transitions. Word has length 174 [2024-11-24 01:10:51,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:10:51,346 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 147 transitions. [2024-11-24 01:10:51,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-24 01:10:51,347 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 147 transitions. [2024-11-24 01:10:51,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-24 01:10:51,349 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:10:51,350 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:10:51,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:10:51,351 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:10:51,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:10:51,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1696623509, now seen corresponding path program 1 times [2024-11-24 01:10:51,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:10:51,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758284492] [2024-11-24 01:10:51,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:51,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:10:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:52,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-24 01:10:52,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:10:52,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758284492] [2024-11-24 01:10:52,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758284492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:10:52,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:10:52,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:10:52,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346892389] [2024-11-24 01:10:52,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:10:52,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:10:52,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:10:52,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:10:52,040 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:10:52,041 INFO L87 Difference]: Start difference. First operand 94 states and 147 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-24 01:10:52,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:10:52,434 INFO L93 Difference]: Finished difference Result 277 states and 436 transitions. [2024-11-24 01:10:52,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:10:52,436 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 174 [2024-11-24 01:10:52,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:10:52,439 INFO L225 Difference]: With dead ends: 277 [2024-11-24 01:10:52,442 INFO L226 Difference]: Without dead ends: 186 [2024-11-24 01:10:52,443 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 01:10:52,444 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 151 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:10:52,444 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 500 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:10:52,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-11-24 01:10:52,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 141. [2024-11-24 01:10:52,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 84 states have (on average 1.3333333333333333) internal successors, (112), 84 states have internal predecessors, (112), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-24 01:10:52,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 220 transitions. [2024-11-24 01:10:52,486 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 220 transitions. Word has length 174 [2024-11-24 01:10:52,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:10:52,488 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 220 transitions. [2024-11-24 01:10:52,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-24 01:10:52,489 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 220 transitions. [2024-11-24 01:10:52,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-24 01:10:52,494 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:10:52,494 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:10:52,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 01:10:52,495 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:10:52,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:10:52,495 INFO L85 PathProgramCache]: Analyzing trace with hash 2119325335, now seen corresponding path program 1 times [2024-11-24 01:10:52,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:10:52,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646247605] [2024-11-24 01:10:52,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:52,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:10:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:52,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-24 01:10:52,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:10:52,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646247605] [2024-11-24 01:10:52,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646247605] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:10:52,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:10:52,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:10:52,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711372179] [2024-11-24 01:10:52,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:10:52,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:10:52,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:10:52,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:10:52,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:10:52,988 INFO L87 Difference]: Start difference. First operand 141 states and 220 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-24 01:10:53,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:10:53,100 INFO L93 Difference]: Finished difference Result 323 states and 508 transitions. [2024-11-24 01:10:53,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:10:53,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 174 [2024-11-24 01:10:53,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:10:53,104 INFO L225 Difference]: With dead ends: 323 [2024-11-24 01:10:53,104 INFO L226 Difference]: Without dead ends: 232 [2024-11-24 01:10:53,108 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 01:10:53,109 INFO L435 NwaCegarLoop]: 200 mSDtfsCounter, 94 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:10:53,109 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 331 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:10:53,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-24 01:10:53,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 230. [2024-11-24 01:10:53,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 145 states have (on average 1.3586206896551725) internal successors, (197), 145 states have internal predecessors, (197), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-24 01:10:53,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 359 transitions. [2024-11-24 01:10:53,192 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 359 transitions. Word has length 174 [2024-11-24 01:10:53,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:10:53,194 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 359 transitions. [2024-11-24 01:10:53,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-24 01:10:53,194 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 359 transitions. [2024-11-24 01:10:53,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-24 01:10:53,199 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:10:53,199 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:10:53,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 01:10:53,199 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:10:53,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:10:53,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1301676885, now seen corresponding path program 1 times [2024-11-24 01:10:53,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:10:53,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150104833] [2024-11-24 01:10:53,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:53,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:10:53,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:11:02,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-24 01:11:02,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:11:02,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150104833] [2024-11-24 01:11:02,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150104833] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:11:02,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:11:02,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-24 01:11:02,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6663184] [2024-11-24 01:11:02,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:11:02,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-24 01:11:02,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:11:02,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-24 01:11:02,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:11:02,179 INFO L87 Difference]: Start difference. First operand 230 states and 359 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-24 01:11:04,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:11:04,118 INFO L93 Difference]: Finished difference Result 450 states and 696 transitions. [2024-11-24 01:11:04,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 01:11:04,119 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 174 [2024-11-24 01:11:04,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:11:04,123 INFO L225 Difference]: With dead ends: 450 [2024-11-24 01:11:04,124 INFO L226 Difference]: Without dead ends: 359 [2024-11-24 01:11:04,125 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2024-11-24 01:11:04,125 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 735 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:11:04,126 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [735 Valid, 972 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-24 01:11:04,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2024-11-24 01:11:04,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 272. [2024-11-24 01:11:04,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 187 states have (on average 1.3957219251336899) internal successors, (261), 187 states have internal predecessors, (261), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-24 01:11:04,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 423 transitions. [2024-11-24 01:11:04,176 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 423 transitions. Word has length 174 [2024-11-24 01:11:04,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:11:04,177 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 423 transitions. [2024-11-24 01:11:04,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-24 01:11:04,177 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 423 transitions. [2024-11-24 01:11:04,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-24 01:11:04,179 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:11:04,180 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:11:04,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 01:11:04,182 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:11:04,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:11:04,183 INFO L85 PathProgramCache]: Analyzing trace with hash 290559635, now seen corresponding path program 1 times [2024-11-24 01:11:04,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:11:04,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566963247] [2024-11-24 01:11:04,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:11:04,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:11:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:11:04,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-24 01:11:04,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:11:04,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566963247] [2024-11-24 01:11:04,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566963247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:11:04,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:11:04,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:11:04,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970356410] [2024-11-24 01:11:04,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:11:04,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:11:04,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:11:04,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:11:04,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:11:04,298 INFO L87 Difference]: Start difference. First operand 272 states and 423 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-24 01:11:04,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:11:04,390 INFO L93 Difference]: Finished difference Result 453 states and 709 transitions. [2024-11-24 01:11:04,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:11:04,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 174 [2024-11-24 01:11:04,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:11:04,396 INFO L225 Difference]: With dead ends: 453 [2024-11-24 01:11:04,396 INFO L226 Difference]: Without dead ends: 362 [2024-11-24 01:11:04,397 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 01:11:04,398 INFO L435 NwaCegarLoop]: 197 mSDtfsCounter, 137 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:11:04,398 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 326 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:11:04,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2024-11-24 01:11:04,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 271. [2024-11-24 01:11:04,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 186 states have (on average 1.39247311827957) internal successors, (259), 186 states have internal predecessors, (259), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-24 01:11:04,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 421 transitions. [2024-11-24 01:11:04,441 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 421 transitions. Word has length 174 [2024-11-24 01:11:04,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:11:04,442 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 421 transitions. [2024-11-24 01:11:04,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-24 01:11:04,443 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 421 transitions. [2024-11-24 01:11:04,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-24 01:11:04,444 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:11:04,445 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:11:04,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 01:11:04,445 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:11:04,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:11:04,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1225399612, now seen corresponding path program 1 times [2024-11-24 01:11:04,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:11:04,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944545264] [2024-11-24 01:11:04,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:11:04,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:11:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:11:15,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-24 01:11:15,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:11:15,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944545264] [2024-11-24 01:11:15,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944545264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:11:15,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:11:15,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-24 01:11:15,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031921272] [2024-11-24 01:11:15,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:11:15,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-24 01:11:15,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:11:15,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-24 01:11:15,887 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2024-11-24 01:11:15,888 INFO L87 Difference]: Start difference. First operand 271 states and 421 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-24 01:11:21,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:11:21,182 INFO L93 Difference]: Finished difference Result 358 states and 543 transitions. [2024-11-24 01:11:21,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-24 01:11:21,183 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2024-11-24 01:11:21,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:11:21,186 INFO L225 Difference]: With dead ends: 358 [2024-11-24 01:11:21,186 INFO L226 Difference]: Without dead ends: 356 [2024-11-24 01:11:21,190 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2024-11-24 01:11:21,191 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 544 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:11:21,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 1120 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-24 01:11:21,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2024-11-24 01:11:21,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 272. [2024-11-24 01:11:21,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 187 states have (on average 1.3903743315508021) internal successors, (260), 187 states have internal predecessors, (260), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-24 01:11:21,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 422 transitions. [2024-11-24 01:11:21,244 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 422 transitions. Word has length 175 [2024-11-24 01:11:21,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:11:21,246 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 422 transitions. [2024-11-24 01:11:21,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-24 01:11:21,247 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 422 transitions. [2024-11-24 01:11:21,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-24 01:11:21,249 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:11:21,250 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:11:21,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 01:11:21,250 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:11:21,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:11:21,251 INFO L85 PathProgramCache]: Analyzing trace with hash 787655146, now seen corresponding path program 1 times [2024-11-24 01:11:21,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:11:21,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432540203] [2024-11-24 01:11:21,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:11:21,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:11:21,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:11:21,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-24 01:11:21,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:11:21,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432540203] [2024-11-24 01:11:21,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432540203] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:11:21,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:11:21,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:11:21,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288688133] [2024-11-24 01:11:21,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:11:21,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:11:21,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:11:21,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:11:21,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:11:21,602 INFO L87 Difference]: Start difference. First operand 272 states and 422 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-24 01:11:21,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:11:21,707 INFO L93 Difference]: Finished difference Result 474 states and 732 transitions. [2024-11-24 01:11:21,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:11:21,708 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2024-11-24 01:11:21,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:11:21,711 INFO L225 Difference]: With dead ends: 474 [2024-11-24 01:11:21,712 INFO L226 Difference]: Without dead ends: 292 [2024-11-24 01:11:21,712 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:11:21,713 INFO L435 NwaCegarLoop]: 161 mSDtfsCounter, 56 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 403 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 01:11:21,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 403 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:11:21,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2024-11-24 01:11:21,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 280. [2024-11-24 01:11:21,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 193 states have (on average 1.3626943005181347) internal successors, (263), 193 states have internal predecessors, (263), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-24 01:11:21,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 425 transitions. [2024-11-24 01:11:21,751 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 425 transitions. Word has length 175 [2024-11-24 01:11:21,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:11:21,752 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 425 transitions. [2024-11-24 01:11:21,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-24 01:11:21,756 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 425 transitions. [2024-11-24 01:11:21,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-24 01:11:21,758 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:11:21,758 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:11:21,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 01:11:21,758 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:11:21,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:11:21,762 INFO L85 PathProgramCache]: Analyzing trace with hash -21691480, now seen corresponding path program 1 times [2024-11-24 01:11:21,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:11:21,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848590769] [2024-11-24 01:11:21,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:11:21,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:11:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:11:28,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-24 01:11:28,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:11:28,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848590769] [2024-11-24 01:11:28,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848590769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:11:28,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:11:28,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-24 01:11:28,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274481157] [2024-11-24 01:11:28,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:11:28,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-24 01:11:28,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:11:28,584 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-24 01:11:28,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-24 01:11:28,585 INFO L87 Difference]: Start difference. First operand 280 states and 425 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-24 01:11:32,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:11:32,657 INFO L93 Difference]: Finished difference Result 366 states and 544 transitions. [2024-11-24 01:11:32,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-24 01:11:32,658 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2024-11-24 01:11:32,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:11:32,660 INFO L225 Difference]: With dead ends: 366 [2024-11-24 01:11:32,660 INFO L226 Difference]: Without dead ends: 364 [2024-11-24 01:11:32,661 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2024-11-24 01:11:32,661 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 651 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:11:32,661 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 970 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-24 01:11:32,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2024-11-24 01:11:32,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 280. [2024-11-24 01:11:32,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 193 states have (on average 1.3626943005181347) internal successors, (263), 193 states have internal predecessors, (263), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-24 01:11:32,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 425 transitions. [2024-11-24 01:11:32,693 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 425 transitions. Word has length 175 [2024-11-24 01:11:32,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:11:32,693 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 425 transitions. [2024-11-24 01:11:32,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-24 01:11:32,694 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 425 transitions. [2024-11-24 01:11:32,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-24 01:11:32,696 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:11:32,696 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:11:32,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 01:11:32,696 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:11:32,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:11:32,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1110039550, now seen corresponding path program 1 times [2024-11-24 01:11:32,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:11:32,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629515826] [2024-11-24 01:11:32,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:11:32,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:11:32,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:11:43,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-24 01:11:43,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:11:43,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629515826] [2024-11-24 01:11:43,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629515826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:11:43,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:11:43,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-24 01:11:43,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123879774] [2024-11-24 01:11:43,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:11:43,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-24 01:11:43,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:11:43,779 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-24 01:11:43,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2024-11-24 01:11:43,780 INFO L87 Difference]: Start difference. First operand 280 states and 425 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-24 01:11:54,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:11:54,427 INFO L93 Difference]: Finished difference Result 398 states and 588 transitions. [2024-11-24 01:11:54,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-24 01:11:54,428 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2024-11-24 01:11:54,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:11:54,431 INFO L225 Difference]: With dead ends: 398 [2024-11-24 01:11:54,432 INFO L226 Difference]: Without dead ends: 396 [2024-11-24 01:11:54,434 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=322, Invalid=868, Unknown=0, NotChecked=0, Total=1190 [2024-11-24 01:11:54,436 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 695 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:11:54,438 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 922 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-24 01:11:54,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2024-11-24 01:11:54,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 299. [2024-11-24 01:11:54,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 212 states have (on average 1.3773584905660377) internal successors, (292), 212 states have internal predecessors, (292), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-24 01:11:54,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 454 transitions. [2024-11-24 01:11:54,489 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 454 transitions. Word has length 175 [2024-11-24 01:11:54,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:11:54,489 INFO L471 AbstractCegarLoop]: Abstraction has 299 states and 454 transitions. [2024-11-24 01:11:54,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-24 01:11:54,490 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 454 transitions. [2024-11-24 01:11:54,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-24 01:11:54,492 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:11:54,492 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:11:54,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 01:11:54,493 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:11:54,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:11:54,493 INFO L85 PathProgramCache]: Analyzing trace with hash -851874112, now seen corresponding path program 1 times [2024-11-24 01:11:54,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:11:54,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849066426] [2024-11-24 01:11:54,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:11:54,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:11:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:12:14,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-24 01:12:14,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:12:14,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849066426] [2024-11-24 01:12:14,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849066426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:12:14,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:12:14,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-24 01:12:14,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608488534] [2024-11-24 01:12:14,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:12:14,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-24 01:12:14,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:12:14,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-24 01:12:14,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2024-11-24 01:12:14,624 INFO L87 Difference]: Start difference. First operand 299 states and 454 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-24 01:12:33,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:12:33,709 INFO L93 Difference]: Finished difference Result 392 states and 582 transitions. [2024-11-24 01:12:33,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-24 01:12:33,711 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2024-11-24 01:12:33,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:12:33,713 INFO L225 Difference]: With dead ends: 392 [2024-11-24 01:12:33,713 INFO L226 Difference]: Without dead ends: 390 [2024-11-24 01:12:33,714 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 20.3s TimeCoverageRelationStatistics Valid=335, Invalid=925, Unknown=0, NotChecked=0, Total=1260 [2024-11-24 01:12:33,714 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 657 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:12:33,715 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 975 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2024-11-24 01:12:33,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2024-11-24 01:12:33,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 299. [2024-11-24 01:12:33,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 212 states have (on average 1.3773584905660377) internal successors, (292), 212 states have internal predecessors, (292), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-24 01:12:33,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 454 transitions. [2024-11-24 01:12:33,750 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 454 transitions. Word has length 175 [2024-11-24 01:12:33,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:12:33,751 INFO L471 AbstractCegarLoop]: Abstraction has 299 states and 454 transitions. [2024-11-24 01:12:33,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-24 01:12:33,751 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 454 transitions. [2024-11-24 01:12:33,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-24 01:12:33,758 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:12:33,758 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:12:33,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 01:12:33,758 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:12:33,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:12:33,758 INFO L85 PathProgramCache]: Analyzing trace with hash 699854033, now seen corresponding path program 1 times [2024-11-24 01:12:33,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:12:33,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481611647] [2024-11-24 01:12:33,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:12:33,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:12:33,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:12:40,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-24 01:12:40,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:12:40,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481611647] [2024-11-24 01:12:40,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481611647] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:12:40,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:12:40,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-24 01:12:40,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560017636] [2024-11-24 01:12:40,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:12:40,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-24 01:12:40,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:12:40,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-24 01:12:40,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2024-11-24 01:12:40,630 INFO L87 Difference]: Start difference. First operand 299 states and 454 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-24 01:12:45,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:12:45,424 INFO L93 Difference]: Finished difference Result 371 states and 552 transitions. [2024-11-24 01:12:45,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 01:12:45,425 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 176 [2024-11-24 01:12:45,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:12:45,428 INFO L225 Difference]: With dead ends: 371 [2024-11-24 01:12:45,428 INFO L226 Difference]: Without dead ends: 369 [2024-11-24 01:12:45,429 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=253, Invalid=739, Unknown=0, NotChecked=0, Total=992 [2024-11-24 01:12:45,429 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 627 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:12:45,429 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 1088 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-24 01:12:45,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2024-11-24 01:12:45,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 296. [2024-11-24 01:12:45,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 209 states have (on average 1.3779904306220097) internal successors, (288), 209 states have internal predecessors, (288), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-24 01:12:45,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 450 transitions. [2024-11-24 01:12:45,456 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 450 transitions. Word has length 176 [2024-11-24 01:12:45,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:12:45,456 INFO L471 AbstractCegarLoop]: Abstraction has 296 states and 450 transitions. [2024-11-24 01:12:45,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-24 01:12:45,457 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 450 transitions. [2024-11-24 01:12:45,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-24 01:12:45,458 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:12:45,458 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:12:45,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 01:12:45,458 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:12:45,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:12:45,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1378060533, now seen corresponding path program 1 times [2024-11-24 01:12:45,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:12:45,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952178420] [2024-11-24 01:12:45,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:12:45,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:12:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:12:57,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-24 01:12:57,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:12:57,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952178420] [2024-11-24 01:12:57,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952178420] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:12:57,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:12:57,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-24 01:12:57,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191365751] [2024-11-24 01:12:57,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:12:57,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-24 01:12:57,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:12:57,027 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-24 01:12:57,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-24 01:12:57,027 INFO L87 Difference]: Start difference. First operand 296 states and 450 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-24 01:13:12,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:13:12,849 INFO L93 Difference]: Finished difference Result 393 states and 583 transitions. [2024-11-24 01:13:12,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-24 01:13:12,852 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 176 [2024-11-24 01:13:12,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:13:12,856 INFO L225 Difference]: With dead ends: 393 [2024-11-24 01:13:12,856 INFO L226 Difference]: Without dead ends: 391 [2024-11-24 01:13:12,857 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=336, Invalid=854, Unknown=0, NotChecked=0, Total=1190 [2024-11-24 01:13:12,858 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 544 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:13:12,859 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 1087 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2024-11-24 01:13:12,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2024-11-24 01:13:12,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 308. [2024-11-24 01:13:12,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 221 states have (on average 1.3891402714932126) internal successors, (307), 221 states have internal predecessors, (307), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-24 01:13:12,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 469 transitions. [2024-11-24 01:13:12,906 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 469 transitions. Word has length 176 [2024-11-24 01:13:12,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:13:12,907 INFO L471 AbstractCegarLoop]: Abstraction has 308 states and 469 transitions. [2024-11-24 01:13:12,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-24 01:13:12,907 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 469 transitions. [2024-11-24 01:13:12,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-24 01:13:12,909 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:13:12,910 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:13:12,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 01:13:12,910 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:13:12,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:13:12,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1770456933, now seen corresponding path program 1 times [2024-11-24 01:13:12,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:13:12,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014179749] [2024-11-24 01:13:12,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:13:12,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:13:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:13:20,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-24 01:13:20,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:13:20,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014179749] [2024-11-24 01:13:20,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014179749] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:13:20,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:13:20,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-24 01:13:20,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139581972] [2024-11-24 01:13:20,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:13:20,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-24 01:13:20,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:13:20,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-24 01:13:20,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2024-11-24 01:13:20,354 INFO L87 Difference]: Start difference. First operand 308 states and 469 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-24 01:13:27,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:13:27,019 INFO L93 Difference]: Finished difference Result 400 states and 592 transitions. [2024-11-24 01:13:27,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-24 01:13:27,021 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 176 [2024-11-24 01:13:27,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:13:27,025 INFO L225 Difference]: With dead ends: 400 [2024-11-24 01:13:27,025 INFO L226 Difference]: Without dead ends: 398 [2024-11-24 01:13:27,026 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=436, Invalid=1124, Unknown=0, NotChecked=0, Total=1560 [2024-11-24 01:13:27,027 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 624 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:13:27,027 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 1024 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-24 01:13:27,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2024-11-24 01:13:27,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 309. [2024-11-24 01:13:27,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 222 states have (on average 1.3873873873873874) internal successors, (308), 222 states have internal predecessors, (308), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-24 01:13:27,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 470 transitions. [2024-11-24 01:13:27,066 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 470 transitions. Word has length 176 [2024-11-24 01:13:27,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:13:27,067 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 470 transitions. [2024-11-24 01:13:27,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-24 01:13:27,067 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 470 transitions. [2024-11-24 01:13:27,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-24 01:13:27,069 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:13:27,069 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:13:27,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 01:13:27,070 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:13:27,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:13:27,070 INFO L85 PathProgramCache]: Analyzing trace with hash 791254519, now seen corresponding path program 1 times [2024-11-24 01:13:27,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:13:27,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933828658] [2024-11-24 01:13:27,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:13:27,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:13:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:13:43,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-24 01:13:43,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:13:43,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933828658] [2024-11-24 01:13:43,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933828658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:13:43,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:13:43,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-24 01:13:43,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001286360] [2024-11-24 01:13:43,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:13:43,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-24 01:13:43,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:13:43,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-24 01:13:43,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2024-11-24 01:13:43,269 INFO L87 Difference]: Start difference. First operand 309 states and 470 transitions. Second operand has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-24 01:14:00,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:14:00,539 INFO L93 Difference]: Finished difference Result 389 states and 579 transitions. [2024-11-24 01:14:00,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-24 01:14:00,540 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 176 [2024-11-24 01:14:00,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:14:00,543 INFO L225 Difference]: With dead ends: 389 [2024-11-24 01:14:00,543 INFO L226 Difference]: Without dead ends: 387 [2024-11-24 01:14:00,544 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=359, Invalid=901, Unknown=0, NotChecked=0, Total=1260 [2024-11-24 01:14:00,545 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 570 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:14:00,546 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [570 Valid, 1003 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-11-24 01:14:00,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2024-11-24 01:14:00,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 309. [2024-11-24 01:14:00,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 222 states have (on average 1.3873873873873874) internal successors, (308), 222 states have internal predecessors, (308), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-24 01:14:00,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 470 transitions. [2024-11-24 01:14:00,582 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 470 transitions. Word has length 176 [2024-11-24 01:14:00,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:14:00,583 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 470 transitions. [2024-11-24 01:14:00,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-24 01:14:00,583 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 470 transitions. [2024-11-24 01:14:00,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-24 01:14:00,585 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:14:00,585 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:00,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 01:14:00,586 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:14:00,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:14:00,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1937704349, now seen corresponding path program 1 times [2024-11-24 01:14:00,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:14:00,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330877997] [2024-11-24 01:14:00,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:14:00,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:14:00,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:14:16,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-24 01:14:16,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:14:16,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330877997] [2024-11-24 01:14:16,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330877997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:14:16,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:14:16,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-24 01:14:16,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943553927] [2024-11-24 01:14:16,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:14:16,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-24 01:14:16,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:14:16,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-24 01:14:16,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2024-11-24 01:14:16,609 INFO L87 Difference]: Start difference. First operand 309 states and 470 transitions. Second operand has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-24 01:14:40,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:14:40,010 INFO L93 Difference]: Finished difference Result 388 states and 577 transitions. [2024-11-24 01:14:40,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-24 01:14:40,012 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 176 [2024-11-24 01:14:40,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:14:40,016 INFO L225 Difference]: With dead ends: 388 [2024-11-24 01:14:40,016 INFO L226 Difference]: Without dead ends: 386 [2024-11-24 01:14:40,018 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 23.3s TimeCoverageRelationStatistics Valid=469, Invalid=1253, Unknown=0, NotChecked=0, Total=1722 [2024-11-24 01:14:40,020 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 521 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:14:40,020 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 1141 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-11-24 01:14:40,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2024-11-24 01:14:40,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 300. [2024-11-24 01:14:40,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 213 states have (on average 1.375586854460094) internal successors, (293), 213 states have internal predecessors, (293), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-24 01:14:40,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 455 transitions. [2024-11-24 01:14:40,071 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 455 transitions. Word has length 176 [2024-11-24 01:14:40,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:14:40,072 INFO L471 AbstractCegarLoop]: Abstraction has 300 states and 455 transitions. [2024-11-24 01:14:40,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-24 01:14:40,072 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 455 transitions. [2024-11-24 01:14:40,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-24 01:14:40,074 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:14:40,075 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:40,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-24 01:14:40,076 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:14:40,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:14:40,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1574947993, now seen corresponding path program 1 times [2024-11-24 01:14:40,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:14:40,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311458824] [2024-11-24 01:14:40,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:14:40,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:14:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:15:01,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-24 01:15:01,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:15:01,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311458824] [2024-11-24 01:15:01,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311458824] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:15:01,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:15:01,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-24 01:15:01,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691697858] [2024-11-24 01:15:01,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:15:01,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-24 01:15:01,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:15:01,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-24 01:15:01,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2024-11-24 01:15:01,189 INFO L87 Difference]: Start difference. First operand 300 states and 455 transitions. Second operand has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-24 01:15:19,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:15:19,507 INFO L93 Difference]: Finished difference Result 396 states and 586 transitions. [2024-11-24 01:15:19,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 01:15:19,508 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 176 [2024-11-24 01:15:19,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:15:19,511 INFO L225 Difference]: With dead ends: 396 [2024-11-24 01:15:19,511 INFO L226 Difference]: Without dead ends: 394 [2024-11-24 01:15:19,511 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 17.6s TimeCoverageRelationStatistics Valid=282, Invalid=840, Unknown=0, NotChecked=0, Total=1122 [2024-11-24 01:15:19,512 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 351 mSDsluCounter, 1445 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:15:19,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 1630 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2024-11-24 01:15:19,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2024-11-24 01:15:19,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 328. [2024-11-24 01:15:19,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 241 states have (on average 1.3983402489626555) internal successors, (337), 241 states have internal predecessors, (337), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-24 01:15:19,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 499 transitions. [2024-11-24 01:15:19,544 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 499 transitions. Word has length 176 [2024-11-24 01:15:19,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:15:19,544 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 499 transitions. [2024-11-24 01:15:19,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-24 01:15:19,545 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 499 transitions. [2024-11-24 01:15:19,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-24 01:15:19,546 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:15:19,546 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:15:19,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-24 01:15:19,547 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:15:19,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:15:19,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1316782555, now seen corresponding path program 1 times [2024-11-24 01:15:19,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:15:19,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139629702] [2024-11-24 01:15:19,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:15:19,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:15:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:15:36,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-24 01:15:36,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:15:36,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139629702] [2024-11-24 01:15:36,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139629702] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:15:36,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:15:36,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-24 01:15:36,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195864013] [2024-11-24 01:15:36,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:15:36,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-24 01:15:36,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:15:36,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-24 01:15:36,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2024-11-24 01:15:36,366 INFO L87 Difference]: Start difference. First operand 328 states and 499 transitions. Second operand has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-24 01:15:51,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:15:51,209 INFO L93 Difference]: Finished difference Result 390 states and 580 transitions. [2024-11-24 01:15:51,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-24 01:15:51,210 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 176 [2024-11-24 01:15:51,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:15:51,213 INFO L225 Difference]: With dead ends: 390 [2024-11-24 01:15:51,213 INFO L226 Difference]: Without dead ends: 388 [2024-11-24 01:15:51,214 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=410, Invalid=996, Unknown=0, NotChecked=0, Total=1406 [2024-11-24 01:15:51,214 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 470 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:15:51,215 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 1176 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-11-24 01:15:51,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2024-11-24 01:15:51,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 328. [2024-11-24 01:15:51,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 241 states have (on average 1.3983402489626555) internal successors, (337), 241 states have internal predecessors, (337), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-24 01:15:51,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 499 transitions. [2024-11-24 01:15:51,247 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 499 transitions. Word has length 176 [2024-11-24 01:15:51,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:15:51,248 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 499 transitions. [2024-11-24 01:15:51,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-24 01:15:51,248 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 499 transitions. [2024-11-24 01:15:51,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-24 01:15:51,250 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:15:51,250 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:15:51,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-24 01:15:51,250 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:15:51,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:15:51,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1915009156, now seen corresponding path program 1 times [2024-11-24 01:15:51,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:15:51,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061059009] [2024-11-24 01:15:51,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:15:51,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:15:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:15:59,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-24 01:15:59,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:15:59,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061059009] [2024-11-24 01:15:59,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061059009] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:15:59,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:15:59,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-24 01:15:59,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662139657] [2024-11-24 01:15:59,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:15:59,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-24 01:15:59,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:15:59,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-24 01:15:59,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2024-11-24 01:15:59,196 INFO L87 Difference]: Start difference. First operand 328 states and 499 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-24 01:16:09,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:16:09,902 INFO L93 Difference]: Finished difference Result 406 states and 601 transitions. [2024-11-24 01:16:09,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-24 01:16:09,903 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 177 [2024-11-24 01:16:09,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:16:09,907 INFO L225 Difference]: With dead ends: 406 [2024-11-24 01:16:09,907 INFO L226 Difference]: Without dead ends: 404 [2024-11-24 01:16:09,908 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=507, Invalid=1385, Unknown=0, NotChecked=0, Total=1892 [2024-11-24 01:16:09,909 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 560 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 1252 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 1432 SdHoareTripleChecker+Invalid, 1338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:16:09,910 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 1432 Invalid, 1338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1252 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-24 01:16:09,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2024-11-24 01:16:09,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 338. [2024-11-24 01:16:09,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 251 states have (on average 1.406374501992032) internal successors, (353), 251 states have internal predecessors, (353), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-24 01:16:09,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 515 transitions. [2024-11-24 01:16:09,954 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 515 transitions. Word has length 177 [2024-11-24 01:16:09,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:16:09,956 INFO L471 AbstractCegarLoop]: Abstraction has 338 states and 515 transitions. [2024-11-24 01:16:09,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-24 01:16:09,957 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 515 transitions. [2024-11-24 01:16:09,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-24 01:16:09,959 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:16:09,960 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:16:09,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-24 01:16:09,960 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:16:09,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:16:09,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1368840890, now seen corresponding path program 1 times [2024-11-24 01:16:09,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:16:09,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281500333] [2024-11-24 01:16:09,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:16:09,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:16:10,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:16:26,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-24 01:16:26,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:16:26,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281500333] [2024-11-24 01:16:26,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281500333] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:16:26,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:16:26,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-24 01:16:26,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775353300] [2024-11-24 01:16:26,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:16:26,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-24 01:16:26,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:16:26,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-24 01:16:26,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2024-11-24 01:16:26,714 INFO L87 Difference]: Start difference. First operand 338 states and 515 transitions. Second operand has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-24 01:16:43,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-24 01:16:43,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:16:43,288 INFO L93 Difference]: Finished difference Result 387 states and 577 transitions. [2024-11-24 01:16:43,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-24 01:16:43,289 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 177 [2024-11-24 01:16:43,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:16:43,290 INFO L225 Difference]: With dead ends: 387 [2024-11-24 01:16:43,290 INFO L226 Difference]: Without dead ends: 385 [2024-11-24 01:16:43,291 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=390, Invalid=1092, Unknown=0, NotChecked=0, Total=1482 [2024-11-24 01:16:43,292 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 476 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:16:43,292 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 1289 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2024-11-24 01:16:43,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-11-24 01:16:43,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 328. [2024-11-24 01:16:43,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 241 states have (on average 1.3983402489626555) internal successors, (337), 241 states have internal predecessors, (337), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-24 01:16:43,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 499 transitions. [2024-11-24 01:16:43,324 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 499 transitions. Word has length 177 [2024-11-24 01:16:43,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:16:43,324 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 499 transitions. [2024-11-24 01:16:43,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-24 01:16:43,325 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 499 transitions. [2024-11-24 01:16:43,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-24 01:16:43,326 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:16:43,327 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:16:43,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-24 01:16:43,327 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:16:43,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:16:43,328 INFO L85 PathProgramCache]: Analyzing trace with hash -149199312, now seen corresponding path program 1 times [2024-11-24 01:16:43,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:16:43,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874690362] [2024-11-24 01:16:43,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:16:43,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:16:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:17:07,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-24 01:17:07,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:17:07,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874690362] [2024-11-24 01:17:07,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874690362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:17:07,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:17:07,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-24 01:17:07,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149050427] [2024-11-24 01:17:07,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:17:07,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-24 01:17:07,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:17:07,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-24 01:17:07,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-24 01:17:07,730 INFO L87 Difference]: Start difference. First operand 328 states and 499 transitions. Second operand has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-24 01:17:27,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:17:27,063 INFO L93 Difference]: Finished difference Result 391 states and 581 transitions. [2024-11-24 01:17:27,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-24 01:17:27,065 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2024-11-24 01:17:27,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:17:27,066 INFO L225 Difference]: With dead ends: 391 [2024-11-24 01:17:27,067 INFO L226 Difference]: Without dead ends: 389 [2024-11-24 01:17:27,068 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 22.8s TimeCoverageRelationStatistics Valid=453, Invalid=1187, Unknown=0, NotChecked=0, Total=1640 [2024-11-24 01:17:27,068 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 424 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 1371 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:17:27,069 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 1371 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-11-24 01:17:27,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2024-11-24 01:17:27,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 337. [2024-11-24 01:17:27,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 250 states have (on average 1.408) internal successors, (352), 250 states have internal predecessors, (352), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-24 01:17:27,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 514 transitions. [2024-11-24 01:17:27,112 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 514 transitions. Word has length 177 [2024-11-24 01:17:27,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:17:27,113 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 514 transitions. [2024-11-24 01:17:27,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-24 01:17:27,114 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 514 transitions. [2024-11-24 01:17:27,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-24 01:17:27,115 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:17:27,115 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:17:27,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-24 01:17:27,115 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:17:27,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:17:27,116 INFO L85 PathProgramCache]: Analyzing trace with hash 997250518, now seen corresponding path program 1 times [2024-11-24 01:17:27,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:17:27,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642368849] [2024-11-24 01:17:27,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:17:27,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:17:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:17:49,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-24 01:17:49,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:17:49,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642368849] [2024-11-24 01:17:49,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642368849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:17:49,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:17:49,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-24 01:17:49,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645042087] [2024-11-24 01:17:49,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:17:49,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-24 01:17:49,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:17:49,791 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-24 01:17:49,791 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2024-11-24 01:17:49,791 INFO L87 Difference]: Start difference. First operand 337 states and 514 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-24 01:18:12,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:18:12,331 INFO L93 Difference]: Finished difference Result 398 states and 590 transitions. [2024-11-24 01:18:12,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-24 01:18:12,332 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2024-11-24 01:18:12,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:18:12,337 INFO L225 Difference]: With dead ends: 398 [2024-11-24 01:18:12,337 INFO L226 Difference]: Without dead ends: 396 [2024-11-24 01:18:12,339 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 26.5s TimeCoverageRelationStatistics Valid=540, Invalid=1352, Unknown=0, NotChecked=0, Total=1892 [2024-11-24 01:18:12,341 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 553 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:18:12,341 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 1322 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-11-24 01:18:12,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2024-11-24 01:18:12,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 338. [2024-11-24 01:18:12,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 251 states have (on average 1.406374501992032) internal successors, (353), 251 states have internal predecessors, (353), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-24 01:18:12,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 515 transitions. [2024-11-24 01:18:12,375 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 515 transitions. Word has length 177 [2024-11-24 01:18:12,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:18:12,376 INFO L471 AbstractCegarLoop]: Abstraction has 338 states and 515 transitions. [2024-11-24 01:18:12,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-24 01:18:12,376 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 515 transitions. [2024-11-24 01:18:12,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-24 01:18:12,377 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:12,378 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:18:12,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-24 01:18:12,378 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:12,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:12,379 INFO L85 PathProgramCache]: Analyzing trace with hash -736005326, now seen corresponding path program 1 times [2024-11-24 01:18:12,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:12,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688074289] [2024-11-24 01:18:12,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:12,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:12,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:18:32,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-24 01:18:32,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:18:32,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688074289] [2024-11-24 01:18:32,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688074289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:18:32,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:18:32,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-24 01:18:32,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337273171] [2024-11-24 01:18:32,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:18:32,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-24 01:18:32,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:18:32,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-24 01:18:32,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2024-11-24 01:18:32,457 INFO L87 Difference]: Start difference. First operand 338 states and 515 transitions. Second operand has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-24 01:18:46,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:18:46,715 INFO L93 Difference]: Finished difference Result 387 states and 577 transitions. [2024-11-24 01:18:46,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-24 01:18:46,716 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2024-11-24 01:18:46,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:18:46,718 INFO L225 Difference]: With dead ends: 387 [2024-11-24 01:18:46,718 INFO L226 Difference]: Without dead ends: 385 [2024-11-24 01:18:46,719 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=453, Invalid=1107, Unknown=0, NotChecked=0, Total=1560 [2024-11-24 01:18:46,719 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 392 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:18:46,720 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 1325 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-24 01:18:46,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-11-24 01:18:46,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 338. [2024-11-24 01:18:46,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 251 states have (on average 1.406374501992032) internal successors, (353), 251 states have internal predecessors, (353), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-24 01:18:46,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 515 transitions. [2024-11-24 01:18:46,749 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 515 transitions. Word has length 177 [2024-11-24 01:18:46,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:18:46,749 INFO L471 AbstractCegarLoop]: Abstraction has 338 states and 515 transitions. [2024-11-24 01:18:46,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-24 01:18:46,750 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 515 transitions. [2024-11-24 01:18:46,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-24 01:18:46,751 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:46,751 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:18:46,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-24 01:18:46,751 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:46,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:46,752 INFO L85 PathProgramCache]: Analyzing trace with hash 410444504, now seen corresponding path program 1 times [2024-11-24 01:18:46,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:46,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097508348] [2024-11-24 01:18:46,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:46,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:46,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:19:01,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-24 01:19:01,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:19:01,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097508348] [2024-11-24 01:19:01,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097508348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:19:01,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:19:01,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2024-11-24 01:19:01,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908557166] [2024-11-24 01:19:01,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:19:01,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-24 01:19:01,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:19:01,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-24 01:19:01,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2024-11-24 01:19:01,445 INFO L87 Difference]: Start difference. First operand 338 states and 515 transitions. Second operand has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 22 states have internal predecessors, (45), 3 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2024-11-24 01:19:18,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:19:18,388 INFO L93 Difference]: Finished difference Result 379 states and 566 transitions. [2024-11-24 01:19:18,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-24 01:19:18,390 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 22 states have internal predecessors, (45), 3 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 177 [2024-11-24 01:19:18,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:19:18,392 INFO L225 Difference]: With dead ends: 379 [2024-11-24 01:19:18,392 INFO L226 Difference]: Without dead ends: 377 [2024-11-24 01:19:18,393 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=462, Invalid=1260, Unknown=0, NotChecked=0, Total=1722 [2024-11-24 01:19:18,394 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 538 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 1205 SdHoareTripleChecker+Invalid, 1333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:19:18,394 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 1205 Invalid, 1333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 1156 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-11-24 01:19:18,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2024-11-24 01:19:18,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 329. [2024-11-24 01:19:18,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 242 states have (on average 1.396694214876033) internal successors, (338), 242 states have internal predecessors, (338), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-24 01:19:18,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 500 transitions. [2024-11-24 01:19:18,432 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 500 transitions. Word has length 177 [2024-11-24 01:19:18,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:19:18,433 INFO L471 AbstractCegarLoop]: Abstraction has 329 states and 500 transitions. [2024-11-24 01:19:18,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 22 states have internal predecessors, (45), 3 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2024-11-24 01:19:18,433 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 500 transitions. [2024-11-24 01:19:18,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-24 01:19:18,435 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:19:18,435 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:19:18,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-24 01:19:18,435 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:19:18,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:19:18,436 INFO L85 PathProgramCache]: Analyzing trace with hash -2015424095, now seen corresponding path program 1 times [2024-11-24 01:19:18,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:19:18,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104592796] [2024-11-24 01:19:18,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:19:18,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:19:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:19:43,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-24 01:19:43,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:19:43,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104592796] [2024-11-24 01:19:43,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104592796] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:19:43,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:19:43,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-11-24 01:19:43,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742993096] [2024-11-24 01:19:43,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:19:43,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-24 01:19:43,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:19:43,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-24 01:19:43,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-11-24 01:19:43,825 INFO L87 Difference]: Start difference. First operand 329 states and 500 transitions. Second operand has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 21 states have internal predecessors, (46), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-24 01:20:06,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-24 01:20:30,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:20:30,754 INFO L93 Difference]: Finished difference Result 591 states and 874 transitions. [2024-11-24 01:20:30,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-24 01:20:30,754 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 21 states have internal predecessors, (46), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 178 [2024-11-24 01:20:30,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:20:30,756 INFO L225 Difference]: With dead ends: 591 [2024-11-24 01:20:30,756 INFO L226 Difference]: Without dead ends: 589 [2024-11-24 01:20:30,757 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 40.3s TimeCoverageRelationStatistics Valid=568, Invalid=1688, Unknown=0, NotChecked=0, Total=2256 [2024-11-24 01:20:30,757 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 776 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 1771 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 2250 SdHoareTripleChecker+Invalid, 1950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:20:30,758 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 2250 Invalid, 1950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1771 Invalid, 0 Unknown, 0 Unchecked, 15.4s Time] [2024-11-24 01:20:30,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2024-11-24 01:20:30,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 434. [2024-11-24 01:20:30,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 318 states have (on average 1.3930817610062893) internal successors, (443), 318 states have internal predecessors, (443), 108 states have call successors, (108), 7 states have call predecessors, (108), 7 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2024-11-24 01:20:30,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 659 transitions. [2024-11-24 01:20:30,807 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 659 transitions. Word has length 178 [2024-11-24 01:20:30,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:20:30,807 INFO L471 AbstractCegarLoop]: Abstraction has 434 states and 659 transitions. [2024-11-24 01:20:30,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 21 states have internal predecessors, (46), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-24 01:20:30,808 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 659 transitions. [2024-11-24 01:20:30,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-24 01:20:30,809 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:20:30,809 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:20:30,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-24 01:20:30,809 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:20:30,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:20:30,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1268425951, now seen corresponding path program 1 times [2024-11-24 01:20:30,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:20:30,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599012729] [2024-11-24 01:20:30,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:20:30,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:20:30,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:20:53,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-24 01:20:53,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:20:53,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599012729] [2024-11-24 01:20:53,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599012729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:20:53,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:20:53,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2024-11-24 01:20:53,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820567992] [2024-11-24 01:20:53,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:20:53,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-24 01:20:53,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:20:53,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-24 01:20:53,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2024-11-24 01:20:53,429 INFO L87 Difference]: Start difference. First operand 434 states and 659 transitions. Second operand has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 22 states have internal predecessors, (46), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-24 01:22:27,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:22:27,099 INFO L93 Difference]: Finished difference Result 666 states and 989 transitions. [2024-11-24 01:22:27,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-24 01:22:27,100 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 22 states have internal predecessors, (46), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 178 [2024-11-24 01:22:27,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:22:27,102 INFO L225 Difference]: With dead ends: 666 [2024-11-24 01:22:27,103 INFO L226 Difference]: Without dead ends: 664 [2024-11-24 01:22:27,104 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 949 ImplicationChecksByTransitivity, 81.0s TimeCoverageRelationStatistics Valid=951, Invalid=3081, Unknown=0, NotChecked=0, Total=4032 [2024-11-24 01:22:27,105 INFO L435 NwaCegarLoop]: 264 mSDtfsCounter, 917 mSDsluCounter, 2133 mSDsCounter, 0 mSdLazyCounter, 2202 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 2397 SdHoareTripleChecker+Invalid, 2416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 2202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:22:27,105 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 2397 Invalid, 2416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 2202 Invalid, 0 Unknown, 0 Unchecked, 22.9s Time] [2024-11-24 01:22:27,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2024-11-24 01:22:27,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 424. [2024-11-24 01:22:27,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 308 states have (on average 1.3863636363636365) internal successors, (427), 308 states have internal predecessors, (427), 108 states have call successors, (108), 7 states have call predecessors, (108), 7 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2024-11-24 01:22:27,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 643 transitions. [2024-11-24 01:22:27,160 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 643 transitions. Word has length 178 [2024-11-24 01:22:27,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:22:27,160 INFO L471 AbstractCegarLoop]: Abstraction has 424 states and 643 transitions. [2024-11-24 01:22:27,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 22 states have internal predecessors, (46), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-24 01:22:27,161 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 643 transitions. [2024-11-24 01:22:27,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2024-11-24 01:22:27,164 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:22:27,164 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:22:27,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-24 01:22:27,164 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:22:27,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:22:27,165 INFO L85 PathProgramCache]: Analyzing trace with hash 245549344, now seen corresponding path program 1 times [2024-11-24 01:22:27,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:22:27,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293800280] [2024-11-24 01:22:27,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:22:27,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:22:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:22:49,202 INFO L134 CoverageAnalysis]: Checked inductivity of 5786 backedges. 43 proven. 19 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2024-11-24 01:22:49,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:22:49,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293800280] [2024-11-24 01:22:49,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293800280] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:22:49,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134344175] [2024-11-24 01:22:49,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:22:49,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:22:49,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c7a884-6943-4dce-8010-4bffd9417adb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:22:49,205 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c7a884-6943-4dce-8010-4bffd9417adb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:22:49,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c7a884-6943-4dce-8010-4bffd9417adb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:22:49,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:22:49,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 01:22:49,471 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:22:50,392 INFO L134 CoverageAnalysis]: Checked inductivity of 5786 backedges. 387 proven. 3 refuted. 0 times theorem prover too weak. 5396 trivial. 0 not checked. [2024-11-24 01:22:50,392 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:22:51,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134344175] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:22:51,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:22:51,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 5] total 22 [2024-11-24 01:22:51,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983082154] [2024-11-24 01:22:51,891 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 01:22:51,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-24 01:22:51,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:22:51,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-24 01:22:51,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2024-11-24 01:22:51,894 INFO L87 Difference]: Start difference. First operand 424 states and 643 transitions. Second operand has 22 states, 22 states have (on average 5.7272727272727275) internal successors, (126), 22 states have internal predecessors, (126), 3 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2024-11-24 01:23:10,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:23:10,931 INFO L93 Difference]: Finished difference Result 1380 states and 2053 transitions. [2024-11-24 01:23:10,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-24 01:23:10,932 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.7272727272727275) internal successors, (126), 22 states have internal predecessors, (126), 3 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) Word has length 345 [2024-11-24 01:23:10,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:23:10,936 INFO L225 Difference]: With dead ends: 1380 [2024-11-24 01:23:10,936 INFO L226 Difference]: Without dead ends: 1089 [2024-11-24 01:23:10,938 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=403, Invalid=2459, Unknown=0, NotChecked=0, Total=2862 [2024-11-24 01:23:10,938 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 1353 mSDsluCounter, 2160 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1379 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 2819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:23:10,939 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1379 Valid, 2379 Invalid, 2819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2024-11-24 01:23:10,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2024-11-24 01:23:11,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 679. [2024-11-24 01:23:11,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 499 states have (on average 1.3667334669338678) internal successors, (682), 499 states have internal predecessors, (682), 162 states have call successors, (162), 17 states have call predecessors, (162), 17 states have return successors, (162), 162 states have call predecessors, (162), 162 states have call successors, (162) [2024-11-24 01:23:11,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1006 transitions. [2024-11-24 01:23:11,065 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1006 transitions. Word has length 345 [2024-11-24 01:23:11,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:23:11,065 INFO L471 AbstractCegarLoop]: Abstraction has 679 states and 1006 transitions. [2024-11-24 01:23:11,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.7272727272727275) internal successors, (126), 22 states have internal predecessors, (126), 3 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2024-11-24 01:23:11,066 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1006 transitions. [2024-11-24 01:23:11,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2024-11-24 01:23:11,070 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:23:11,070 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 01:23:11,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c7a884-6943-4dce-8010-4bffd9417adb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 01:23:11,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c7a884-6943-4dce-8010-4bffd9417adb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-24 01:23:11,271 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:23:11,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:23:11,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1551323284, now seen corresponding path program 1 times [2024-11-24 01:23:11,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:23:11,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646411332] [2024-11-24 01:23:11,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:23:11,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:23:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:23:27,243 INFO L134 CoverageAnalysis]: Checked inductivity of 5787 backedges. 5 proven. 58 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2024-11-24 01:23:27,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:23:27,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646411332] [2024-11-24 01:23:27,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646411332] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:23:27,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694235898] [2024-11-24 01:23:27,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:23:27,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:23:27,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c7a884-6943-4dce-8010-4bffd9417adb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:23:27,247 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c7a884-6943-4dce-8010-4bffd9417adb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:23:27,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c7a884-6943-4dce-8010-4bffd9417adb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 01:23:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:23:27,695 INFO L256 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-11-24 01:23:27,725 INFO L279 TraceCheckSpWp]: Computing forward predicates...