./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-25.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-25.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 f1241e523133433f99c0121037f16460566a059895fab50b5b7744778f20a2e5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 06:06:25,883 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 06:06:25,954 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 06:06:25,960 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 06:06:25,961 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 06:06:25,983 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 06:06:25,984 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 06:06:25,985 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 06:06:25,985 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 06:06:25,985 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 06:06:25,986 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 06:06:25,986 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 06:06:25,986 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 06:06:25,987 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 06:06:25,987 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 06:06:25,987 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 06:06:25,987 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 06:06:25,987 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 06:06:25,987 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 06:06:25,987 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 06:06:25,988 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 06:06:25,988 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 06:06:25,988 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 06:06:25,988 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 06:06:25,988 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 06:06:25,988 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 06:06:25,988 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 06:06:25,988 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 06:06:25,988 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 06:06:25,989 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 06:06:25,989 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 06:06:25,989 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 06:06:25,989 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:06:25,989 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 06:06:25,989 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 06:06:25,989 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 06:06:25,990 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 06:06:25,990 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 06:06:25,990 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 06:06:25,990 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 06:06:25,990 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 06:06:25,990 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 06:06:25,990 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 06:06:25,990 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> f1241e523133433f99c0121037f16460566a059895fab50b5b7744778f20a2e5 [2025-03-17 06:06:26,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 06:06:26,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 06:06:26,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 06:06:26,257 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 06:06:26,257 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 06:06:26,258 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-25.i [2025-03-17 06:06:27,547 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/105d6beac/bf8d9278ba7e4781a44075afbb262c55/FLAG610178b78 [2025-03-17 06:06:27,833 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 06:06:27,834 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-25.i [2025-03-17 06:06:27,846 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/105d6beac/bf8d9278ba7e4781a44075afbb262c55/FLAG610178b78 [2025-03-17 06:06:27,863 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/105d6beac/bf8d9278ba7e4781a44075afbb262c55 [2025-03-17 06:06:27,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 06:06:27,868 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 06:06:27,870 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 06:06:27,870 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 06:06:27,874 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 06:06:27,875 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:06:27" (1/1) ... [2025-03-17 06:06:27,876 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59fc2581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:27, skipping insertion in model container [2025-03-17 06:06:27,876 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:06:27" (1/1) ... [2025-03-17 06:06:27,897 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 06:06:28,005 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-25.i[917,930] [2025-03-17 06:06:28,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:06:28,092 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 06:06:28,104 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-25.i[917,930] [2025-03-17 06:06:28,136 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:06:28,159 INFO L204 MainTranslator]: Completed translation [2025-03-17 06:06:28,160 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:28 WrapperNode [2025-03-17 06:06:28,160 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 06:06:28,161 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 06:06:28,161 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 06:06:28,161 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 06:06:28,167 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:28" (1/1) ... [2025-03-17 06:06:28,180 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:28" (1/1) ... [2025-03-17 06:06:28,223 INFO L138 Inliner]: procedures = 30, calls = 176, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 565 [2025-03-17 06:06:28,228 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 06:06:28,228 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 06:06:28,229 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 06:06:28,230 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 06:06:28,237 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:28" (1/1) ... [2025-03-17 06:06:28,237 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:28" (1/1) ... [2025-03-17 06:06:28,247 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:28" (1/1) ... [2025-03-17 06:06:28,257 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2025-03-17 06:06:28,257 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:28" (1/1) ... [2025-03-17 06:06:28,257 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:28" (1/1) ... [2025-03-17 06:06:28,277 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:28" (1/1) ... [2025-03-17 06:06:28,282 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:28" (1/1) ... [2025-03-17 06:06:28,287 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:28" (1/1) ... [2025-03-17 06:06:28,292 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:28" (1/1) ... [2025-03-17 06:06:28,296 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 06:06:28,297 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 06:06:28,297 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 06:06:28,297 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 06:06:28,298 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:28" (1/1) ... [2025-03-17 06:06:28,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:06:28,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:06:28,338 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 06:06:28,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 06:06:28,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 06:06:28,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2025-03-17 06:06:28,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2025-03-17 06:06:28,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-03-17 06:06:28,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2025-03-17 06:06:28,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2025-03-17 06:06:28,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-03-17 06:06:28,367 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 06:06:28,367 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 06:06:28,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-17 06:06:28,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 06:06:28,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 06:06:28,481 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 06:06:28,483 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 06:06:29,035 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L136: havoc property_#t~mem91#1;havoc property_#t~ite107#1;havoc property_#t~mem92#1;havoc property_#t~mem93#1;havoc property_#t~ite104#1;havoc property_#t~mem103#1;havoc property_#t~mem96#1;havoc property_#t~mem94#1;havoc property_#t~mem95#1;havoc property_#t~ite100#1;havoc property_#t~mem97#1;havoc property_#t~mem98#1;havoc property_#t~mem99#1;havoc property_#t~mem101#1;havoc property_#t~mem102#1;havoc property_#t~mem106#1;havoc property_#t~mem105#1;havoc property_#t~mem108#1;havoc property_#t~mem109#1;havoc property_#t~ite120#1;havoc property_#t~mem113#1;havoc property_#t~mem110#1;havoc property_#t~ite112#1;havoc property_#t~mem111#1;havoc property_#t~mem119#1;havoc property_#t~mem114#1;havoc property_#t~mem115#1;havoc property_#t~ite118#1;havoc property_#t~mem116#1;havoc property_#t~mem117#1;havoc property_#t~short121#1;havoc property_#t~mem131#1;havoc property_#t~mem122#1;havoc property_#t~ite124#1;havoc property_#t~mem123#1;havoc property_#t~mem125#1;havoc property_#t~ite130#1;havoc property_#t~mem126#1;havoc property_#t~ite128#1;havoc property_#t~mem127#1;havoc property_#t~mem129#1;havoc property_#t~ite139#1;havoc property_#t~mem133#1;havoc property_#t~mem132#1;havoc property_#t~mem134#1;havoc property_#t~mem135#1;havoc property_#t~ite138#1;havoc property_#t~mem137#1;havoc property_#t~mem136#1;havoc property_#t~short140#1;havoc property_#t~mem141#1;havoc property_#t~mem142#1;havoc property_#t~ite155#1;havoc property_#t~mem143#1;havoc property_#t~mem144#1;havoc property_#t~short145#1;havoc property_#t~ite152#1;havoc property_#t~mem149#1;havoc property_#t~mem146#1;havoc property_#t~mem147#1;havoc property_#t~short148#1;havoc property_#t~mem151#1;havoc property_#t~mem150#1;havoc property_#t~mem154#1;havoc property_#t~mem153#1;havoc property_#t~short156#1; [2025-03-17 06:06:29,088 INFO L? ?]: Removed 140 outVars from TransFormulas that were not future-live. [2025-03-17 06:06:29,088 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 06:06:29,101 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 06:06:29,103 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 06:06:29,103 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:06:29 BoogieIcfgContainer [2025-03-17 06:06:29,103 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 06:06:29,106 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 06:06:29,106 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 06:06:29,110 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 06:06:29,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:06:27" (1/3) ... [2025-03-17 06:06:29,112 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57402805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:06:29, skipping insertion in model container [2025-03-17 06:06:29,112 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:28" (2/3) ... [2025-03-17 06:06:29,112 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57402805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:06:29, skipping insertion in model container [2025-03-17 06:06:29,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:06:29" (3/3) ... [2025-03-17 06:06:29,114 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-25.i [2025-03-17 06:06:29,129 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 06:06:29,130 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-sp_file-25.i that has 2 procedures, 118 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-17 06:06:29,190 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 06:06:29,198 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;@535f94a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 06:06:29,198 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 06:06:29,202 INFO L276 IsEmpty]: Start isEmpty. Operand has 118 states, 97 states have (on average 1.443298969072165) internal successors, (140), 98 states have internal predecessors, (140), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-17 06:06:29,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2025-03-17 06:06:29,210 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:06:29,211 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:06:29,211 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:06:29,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:06:29,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1110243529, now seen corresponding path program 1 times [2025-03-17 06:06:29,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:06:29,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492644646] [2025-03-17 06:06:29,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:06:29,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:06:29,358 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-03-17 06:06:29,409 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-03-17 06:06:29,409 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:06:29,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:06:29,599 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2025-03-17 06:06:29,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:06:29,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492644646] [2025-03-17 06:06:29,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492644646] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:06:29,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377594099] [2025-03-17 06:06:29,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:06:29,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:06:29,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:06:29,604 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:06:29,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 06:06:29,832 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-03-17 06:06:29,927 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-03-17 06:06:29,927 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:06:29,927 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:06:29,932 INFO L256 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 06:06:29,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:06:29,965 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2025-03-17 06:06:29,966 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:06:29,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377594099] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:06:29,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:06:29,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 06:06:29,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321635982] [2025-03-17 06:06:29,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:06:29,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 06:06:29,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:06:29,993 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 06:06:29,993 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 06:06:29,996 INFO L87 Difference]: Start difference. First operand has 118 states, 97 states have (on average 1.443298969072165) internal successors, (140), 98 states have internal predecessors, (140), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-17 06:06:30,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:06:30,027 INFO L93 Difference]: Finished difference Result 233 states and 368 transitions. [2025-03-17 06:06:30,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 06:06:30,029 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 140 [2025-03-17 06:06:30,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:06:30,035 INFO L225 Difference]: With dead ends: 233 [2025-03-17 06:06:30,036 INFO L226 Difference]: Without dead ends: 116 [2025-03-17 06:06:30,041 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 06:06:30,045 INFO L435 NwaCegarLoop]: 172 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, 172 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 [2025-03-17 06:06:30,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 06:06:30,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2025-03-17 06:06:30,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2025-03-17 06:06:30,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 96 states have (on average 1.4166666666666667) internal successors, (136), 96 states have internal predecessors, (136), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-17 06:06:30,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 172 transitions. [2025-03-17 06:06:30,089 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 172 transitions. Word has length 140 [2025-03-17 06:06:30,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:06:30,089 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 172 transitions. [2025-03-17 06:06:30,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-17 06:06:30,090 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 172 transitions. [2025-03-17 06:06:30,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2025-03-17 06:06:30,096 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:06:30,097 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:06:30,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 06:06:30,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-17 06:06:30,298 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:06:30,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:06:30,299 INFO L85 PathProgramCache]: Analyzing trace with hash 2052398343, now seen corresponding path program 1 times [2025-03-17 06:06:30,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:06:30,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150595296] [2025-03-17 06:06:30,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:06:30,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:06:30,358 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-03-17 06:06:30,406 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-03-17 06:06:30,407 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:06:30,407 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:06:30,677 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-17 06:06:30,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:06:30,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150595296] [2025-03-17 06:06:30,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150595296] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:06:30,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:06:30,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 06:06:30,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133280271] [2025-03-17 06:06:30,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:06:30,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 06:06:30,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:06:30,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 06:06:30,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 06:06:30,683 INFO L87 Difference]: Start difference. First operand 116 states and 172 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-17 06:06:30,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:06:30,734 INFO L93 Difference]: Finished difference Result 233 states and 346 transitions. [2025-03-17 06:06:30,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 06:06:30,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 140 [2025-03-17 06:06:30,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:06:30,736 INFO L225 Difference]: With dead ends: 233 [2025-03-17 06:06:30,736 INFO L226 Difference]: Without dead ends: 118 [2025-03-17 06:06:30,737 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 06:06:30,738 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 0 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 06:06:30,738 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 499 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 06:06:30,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2025-03-17 06:06:30,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2025-03-17 06:06:30,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 98 states have (on average 1.4081632653061225) internal successors, (138), 98 states have internal predecessors, (138), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-17 06:06:30,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 174 transitions. [2025-03-17 06:06:30,753 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 174 transitions. Word has length 140 [2025-03-17 06:06:30,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:06:30,755 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 174 transitions. [2025-03-17 06:06:30,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-17 06:06:30,755 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 174 transitions. [2025-03-17 06:06:30,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2025-03-17 06:06:30,786 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:06:30,787 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:06:30,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 06:06:30,789 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:06:30,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:06:30,789 INFO L85 PathProgramCache]: Analyzing trace with hash 270898408, now seen corresponding path program 1 times [2025-03-17 06:06:30,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:06:30,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097365361] [2025-03-17 06:06:30,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:06:30,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:06:30,828 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-03-17 06:06:30,950 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-03-17 06:06:30,951 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:06:30,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:06:32,756 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-17 06:06:32,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:06:32,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097365361] [2025-03-17 06:06:32,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097365361] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:06:32,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:06:32,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-17 06:06:32,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318520790] [2025-03-17 06:06:32,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:06:32,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 06:06:32,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:06:32,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 06:06:32,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2025-03-17 06:06:32,758 INFO L87 Difference]: Start difference. First operand 118 states and 174 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 9 states have internal predecessors, (53), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2025-03-17 06:06:33,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:06:33,205 INFO L93 Difference]: Finished difference Result 239 states and 353 transitions. [2025-03-17 06:06:33,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:06:33,207 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 9 states have internal predecessors, (53), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 140 [2025-03-17 06:06:33,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:06:33,209 INFO L225 Difference]: With dead ends: 239 [2025-03-17 06:06:33,209 INFO L226 Difference]: Without dead ends: 122 [2025-03-17 06:06:33,209 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:06:33,210 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 141 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 06:06:33,210 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 404 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 06:06:33,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2025-03-17 06:06:33,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2025-03-17 06:06:33,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 100 states have (on average 1.4) internal successors, (140), 100 states have internal predecessors, (140), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-17 06:06:33,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 176 transitions. [2025-03-17 06:06:33,244 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 176 transitions. Word has length 140 [2025-03-17 06:06:33,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:06:33,245 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 176 transitions. [2025-03-17 06:06:33,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 9 states have internal predecessors, (53), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2025-03-17 06:06:33,246 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 176 transitions. [2025-03-17 06:06:33,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2025-03-17 06:06:33,249 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:06:33,250 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:06:33,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 06:06:33,250 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:06:33,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:06:33,251 INFO L85 PathProgramCache]: Analyzing trace with hash 682437612, now seen corresponding path program 1 times [2025-03-17 06:06:33,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:06:33,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789861568] [2025-03-17 06:06:33,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:06:33,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:06:33,281 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-03-17 06:06:33,385 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-03-17 06:06:33,386 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:06:33,386 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:06:37,119 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-17 06:06:37,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:06:37,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789861568] [2025-03-17 06:06:37,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789861568] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:06:37,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:06:37,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-17 06:06:37,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849668631] [2025-03-17 06:06:37,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:06:37,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 06:06:37,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:06:37,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 06:06:37,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2025-03-17 06:06:37,123 INFO L87 Difference]: Start difference. First operand 120 states and 176 transitions. Second operand has 14 states, 13 states have (on average 4.076923076923077) internal successors, (53), 14 states have internal predecessors, (53), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2025-03-17 06:06:38,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:06:38,482 INFO L93 Difference]: Finished difference Result 292 states and 429 transitions. [2025-03-17 06:06:38,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 06:06:38,483 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.076923076923077) internal successors, (53), 14 states have internal predecessors, (53), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 140 [2025-03-17 06:06:38,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:06:38,484 INFO L225 Difference]: With dead ends: 292 [2025-03-17 06:06:38,485 INFO L226 Difference]: Without dead ends: 173 [2025-03-17 06:06:38,485 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2025-03-17 06:06:38,486 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 379 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-17 06:06:38,486 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 657 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-17 06:06:38,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2025-03-17 06:06:38,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 134. [2025-03-17 06:06:38,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 114 states have (on average 1.412280701754386) internal successors, (161), 114 states have internal predecessors, (161), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-17 06:06:38,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 197 transitions. [2025-03-17 06:06:38,520 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 197 transitions. Word has length 140 [2025-03-17 06:06:38,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:06:38,522 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 197 transitions. [2025-03-17 06:06:38,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.076923076923077) internal successors, (53), 14 states have internal predecessors, (53), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2025-03-17 06:06:38,522 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 197 transitions. [2025-03-17 06:06:38,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-17 06:06:38,524 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:06:38,524 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:06:38,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 06:06:38,525 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:06:38,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:06:38,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1615764373, now seen corresponding path program 1 times [2025-03-17 06:06:38,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:06:38,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381276033] [2025-03-17 06:06:38,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:06:38,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:06:38,578 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-17 06:06:38,640 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-17 06:06:38,641 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:06:38,641 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:06:39,901 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-17 06:06:39,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:06:39,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381276033] [2025-03-17 06:06:39,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381276033] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:06:39,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:06:39,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-17 06:06:39,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320488584] [2025-03-17 06:06:39,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:06:39,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 06:06:39,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:06:39,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 06:06:39,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2025-03-17 06:06:39,905 INFO L87 Difference]: Start difference. First operand 134 states and 197 transitions. Second operand has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-17 06:06:40,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:06:40,767 INFO L93 Difference]: Finished difference Result 322 states and 474 transitions. [2025-03-17 06:06:40,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:06:40,768 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 141 [2025-03-17 06:06:40,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:06:40,772 INFO L225 Difference]: With dead ends: 322 [2025-03-17 06:06:40,772 INFO L226 Difference]: Without dead ends: 189 [2025-03-17 06:06:40,773 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2025-03-17 06:06:40,776 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 386 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-17 06:06:40,776 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 643 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-17 06:06:40,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2025-03-17 06:06:40,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 150. [2025-03-17 06:06:40,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 130 states have (on average 1.4230769230769231) internal successors, (185), 130 states have internal predecessors, (185), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-17 06:06:40,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 221 transitions. [2025-03-17 06:06:40,799 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 221 transitions. Word has length 141 [2025-03-17 06:06:40,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:06:40,799 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 221 transitions. [2025-03-17 06:06:40,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-17 06:06:40,799 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 221 transitions. [2025-03-17 06:06:40,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-03-17 06:06:40,802 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:06:40,803 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:06:40,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 06:06:40,803 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:06:40,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:06:40,804 INFO L85 PathProgramCache]: Analyzing trace with hash 70135334, now seen corresponding path program 1 times [2025-03-17 06:06:40,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:06:40,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281277423] [2025-03-17 06:06:40,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:06:40,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:06:40,837 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-17 06:06:40,850 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-17 06:06:40,851 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:06:40,851 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:06:41,006 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2025-03-17 06:06:41,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:06:41,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281277423] [2025-03-17 06:06:41,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281277423] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:06:41,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610408494] [2025-03-17 06:06:41,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:06:41,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:06:41,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:06:41,010 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:06:41,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 06:06:41,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-17 06:06:41,250 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-17 06:06:41,250 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:06:41,250 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:06:41,255 INFO L256 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 06:06:41,261 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:06:41,316 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-17 06:06:41,317 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:06:41,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610408494] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:06:41,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:06:41,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2025-03-17 06:06:41,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004989762] [2025-03-17 06:06:41,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:06:41,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:06:41,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:06:41,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:06:41,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-17 06:06:41,320 INFO L87 Difference]: Start difference. First operand 150 states and 221 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-17 06:06:41,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:06:41,366 INFO L93 Difference]: Finished difference Result 302 states and 445 transitions. [2025-03-17 06:06:41,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:06:41,369 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 142 [2025-03-17 06:06:41,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:06:41,370 INFO L225 Difference]: With dead ends: 302 [2025-03-17 06:06:41,370 INFO L226 Difference]: Without dead ends: 153 [2025-03-17 06:06:41,370 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-17 06:06:41,371 INFO L435 NwaCegarLoop]: 171 mSDtfsCounter, 0 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 06:06:41,371 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 666 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 06:06:41,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2025-03-17 06:06:41,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 151. [2025-03-17 06:06:41,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 131 states have (on average 1.4198473282442747) internal successors, (186), 131 states have internal predecessors, (186), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-17 06:06:41,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 222 transitions. [2025-03-17 06:06:41,399 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 222 transitions. Word has length 142 [2025-03-17 06:06:41,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:06:41,400 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 222 transitions. [2025-03-17 06:06:41,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-17 06:06:41,400 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 222 transitions. [2025-03-17 06:06:41,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-17 06:06:41,401 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:06:41,401 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:06:41,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 06:06:41,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-03-17 06:06:41,601 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:06:41,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:06:41,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1355701495, now seen corresponding path program 1 times [2025-03-17 06:06:41,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:06:41,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003412051] [2025-03-17 06:06:41,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:06:41,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:06:41,653 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-17 06:06:41,726 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-17 06:06:41,727 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:06:41,727 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:06:42,527 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-17 06:06:42,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:06:42,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003412051] [2025-03-17 06:06:42,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003412051] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:06:42,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:06:42,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 06:06:42,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694102613] [2025-03-17 06:06:42,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:06:42,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 06:06:42,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:06:42,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 06:06:42,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:06:42,530 INFO L87 Difference]: Start difference. First operand 151 states and 222 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-17 06:06:43,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:06:43,066 INFO L93 Difference]: Finished difference Result 343 states and 502 transitions. [2025-03-17 06:06:43,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:06:43,067 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 143 [2025-03-17 06:06:43,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:06:43,069 INFO L225 Difference]: With dead ends: 343 [2025-03-17 06:06:43,069 INFO L226 Difference]: Without dead ends: 193 [2025-03-17 06:06:43,069 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2025-03-17 06:06:43,070 INFO L435 NwaCegarLoop]: 189 mSDtfsCounter, 190 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 06:06:43,070 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 704 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 06:06:43,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2025-03-17 06:06:43,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 135. [2025-03-17 06:06:43,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 115 states have (on average 1.4) internal successors, (161), 115 states have internal predecessors, (161), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-17 06:06:43,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 197 transitions. [2025-03-17 06:06:43,084 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 197 transitions. Word has length 143 [2025-03-17 06:06:43,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:06:43,085 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 197 transitions. [2025-03-17 06:06:43,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-17 06:06:43,085 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 197 transitions. [2025-03-17 06:06:43,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-03-17 06:06:43,087 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:06:43,087 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:06:43,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 06:06:43,087 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:06:43,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:06:43,088 INFO L85 PathProgramCache]: Analyzing trace with hash -832815544, now seen corresponding path program 1 times [2025-03-17 06:06:43,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:06:43,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943931700] [2025-03-17 06:06:43,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:06:43,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:06:43,120 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-17 06:06:43,198 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-17 06:06:43,198 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:06:43,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:06:44,360 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-17 06:06:44,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:06:44,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943931700] [2025-03-17 06:06:44,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943931700] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:06:44,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:06:44,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-17 06:06:44,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227728904] [2025-03-17 06:06:44,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:06:44,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 06:06:44,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:06:44,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 06:06:44,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2025-03-17 06:06:44,366 INFO L87 Difference]: Start difference. First operand 135 states and 197 transitions. Second operand has 13 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-17 06:06:45,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:06:45,431 INFO L93 Difference]: Finished difference Result 304 states and 442 transitions. [2025-03-17 06:06:45,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 06:06:45,433 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 144 [2025-03-17 06:06:45,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:06:45,434 INFO L225 Difference]: With dead ends: 304 [2025-03-17 06:06:45,434 INFO L226 Difference]: Without dead ends: 170 [2025-03-17 06:06:45,435 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2025-03-17 06:06:45,436 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 533 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-17 06:06:45,436 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 560 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-17 06:06:45,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2025-03-17 06:06:45,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 135. [2025-03-17 06:06:45,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 115 states have (on average 1.391304347826087) internal successors, (160), 115 states have internal predecessors, (160), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-17 06:06:45,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 196 transitions. [2025-03-17 06:06:45,460 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 196 transitions. Word has length 144 [2025-03-17 06:06:45,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:06:45,460 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 196 transitions. [2025-03-17 06:06:45,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-17 06:06:45,461 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 196 transitions. [2025-03-17 06:06:45,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-03-17 06:06:45,461 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:06:45,462 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:06:45,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 06:06:45,462 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:06:45,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:06:45,462 INFO L85 PathProgramCache]: Analyzing trace with hash -2097225083, now seen corresponding path program 1 times [2025-03-17 06:06:45,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:06:45,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145225499] [2025-03-17 06:06:45,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:06:45,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:06:45,505 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-17 06:06:45,537 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-17 06:06:45,537 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:06:45,537 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:06:47,403 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-17 06:06:47,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:06:47,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145225499] [2025-03-17 06:06:47,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145225499] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:06:47,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:06:47,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:06:47,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777169164] [2025-03-17 06:06:47,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:06:47,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-17 06:06:47,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:06:47,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-17 06:06:47,405 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2025-03-17 06:06:47,410 INFO L87 Difference]: Start difference. First operand 135 states and 196 transitions. Second operand has 10 states, 9 states have (on average 6.333333333333333) internal successors, (57), 10 states have internal predecessors, (57), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2025-03-17 06:06:48,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:06:48,168 INFO L93 Difference]: Finished difference Result 302 states and 437 transitions. [2025-03-17 06:06:48,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:06:48,169 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.333333333333333) internal successors, (57), 10 states have internal predecessors, (57), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 144 [2025-03-17 06:06:48,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:06:48,170 INFO L225 Difference]: With dead ends: 302 [2025-03-17 06:06:48,170 INFO L226 Difference]: Without dead ends: 168 [2025-03-17 06:06:48,171 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2025-03-17 06:06:48,171 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 420 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-17 06:06:48,172 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 431 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-17 06:06:48,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2025-03-17 06:06:48,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 138. [2025-03-17 06:06:48,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 118 states have (on average 1.38135593220339) internal successors, (163), 118 states have internal predecessors, (163), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-17 06:06:48,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 199 transitions. [2025-03-17 06:06:48,204 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 199 transitions. Word has length 144 [2025-03-17 06:06:48,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:06:48,205 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 199 transitions. [2025-03-17 06:06:48,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.333333333333333) internal successors, (57), 10 states have internal predecessors, (57), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2025-03-17 06:06:48,205 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 199 transitions. [2025-03-17 06:06:48,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-03-17 06:06:48,206 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:06:48,206 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:06:48,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 06:06:48,207 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:06:48,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:06:48,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1432679736, now seen corresponding path program 1 times [2025-03-17 06:06:48,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:06:48,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692392494] [2025-03-17 06:06:48,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:06:48,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:06:48,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-17 06:06:48,278 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-17 06:06:48,278 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:06:48,278 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:06:48,690 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 48 proven. 3 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2025-03-17 06:06:48,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:06:48,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692392494] [2025-03-17 06:06:48,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692392494] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:06:48,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825494208] [2025-03-17 06:06:48,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:06:48,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:06:48,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:06:48,697 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:06:48,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 06:06:48,893 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-17 06:06:48,970 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-17 06:06:48,970 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:06:48,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:06:48,975 INFO L256 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-17 06:06:48,981 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:06:49,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-17 06:06:50,026 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2025-03-17 06:06:50,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2025-03-17 06:06:50,063 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2025-03-17 06:06:50,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 12 [2025-03-17 06:06:50,067 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 1 proven. 131 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 06:06:50,068 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:06:50,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2025-03-17 06:06:50,516 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 48 proven. 3 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2025-03-17 06:06:50,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825494208] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:06:50,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:06:50,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 21 [2025-03-17 06:06:50,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973947349] [2025-03-17 06:06:50,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:06:50,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-17 06:06:50,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:06:50,518 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-17 06:06:50,518 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2025-03-17 06:06:50,518 INFO L87 Difference]: Start difference. First operand 138 states and 199 transitions. Second operand has 21 states, 17 states have (on average 6.0) internal successors, (102), 19 states have internal predecessors, (102), 8 states have call successors, (38), 4 states have call predecessors, (38), 6 states have return successors, (38), 5 states have call predecessors, (38), 8 states have call successors, (38) [2025-03-17 06:06:51,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:06:51,727 INFO L93 Difference]: Finished difference Result 339 states and 488 transitions. [2025-03-17 06:06:51,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 06:06:51,729 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 6.0) internal successors, (102), 19 states have internal predecessors, (102), 8 states have call successors, (38), 4 states have call predecessors, (38), 6 states have return successors, (38), 5 states have call predecessors, (38), 8 states have call successors, (38) Word has length 144 [2025-03-17 06:06:51,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:06:51,731 INFO L225 Difference]: With dead ends: 339 [2025-03-17 06:06:51,731 INFO L226 Difference]: Without dead ends: 202 [2025-03-17 06:06:51,732 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 276 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=230, Invalid=826, Unknown=0, NotChecked=0, Total=1056 [2025-03-17 06:06:51,732 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 654 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-17 06:06:51,732 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 771 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-17 06:06:51,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2025-03-17 06:06:51,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 188. [2025-03-17 06:06:51,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 151 states have (on average 1.3377483443708609) internal successors, (202), 152 states have internal predecessors, (202), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2025-03-17 06:06:51,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 270 transitions. [2025-03-17 06:06:51,767 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 270 transitions. Word has length 144 [2025-03-17 06:06:51,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:06:51,767 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 270 transitions. [2025-03-17 06:06:51,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 6.0) internal successors, (102), 19 states have internal predecessors, (102), 8 states have call successors, (38), 4 states have call predecessors, (38), 6 states have return successors, (38), 5 states have call predecessors, (38), 8 states have call successors, (38) [2025-03-17 06:06:51,768 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 270 transitions. [2025-03-17 06:06:51,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2025-03-17 06:06:51,769 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:06:51,769 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:06:51,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 06:06:51,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:06:51,970 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:06:51,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:06:51,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1929097585, now seen corresponding path program 1 times [2025-03-17 06:06:51,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:06:51,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481176301] [2025-03-17 06:06:51,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:06:51,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:06:52,008 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-03-17 06:06:52,064 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-03-17 06:06:52,064 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:06:52,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:06:52,674 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-17 06:06:52,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:06:52,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481176301] [2025-03-17 06:06:52,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481176301] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:06:52,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:06:52,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-17 06:06:52,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91808052] [2025-03-17 06:06:52,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:06:52,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 06:06:52,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:06:52,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 06:06:52,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-03-17 06:06:52,676 INFO L87 Difference]: Start difference. First operand 188 states and 270 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-17 06:06:53,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:06:53,142 INFO L93 Difference]: Finished difference Result 384 states and 549 transitions. [2025-03-17 06:06:53,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:06:53,143 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 145 [2025-03-17 06:06:53,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:06:53,146 INFO L225 Difference]: With dead ends: 384 [2025-03-17 06:06:53,146 INFO L226 Difference]: Without dead ends: 241 [2025-03-17 06:06:53,149 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-03-17 06:06:53,150 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 281 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 06:06:53,150 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 579 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 06:06:53,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2025-03-17 06:06:53,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 205. [2025-03-17 06:06:53,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 168 states have (on average 1.3511904761904763) internal successors, (227), 169 states have internal predecessors, (227), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2025-03-17 06:06:53,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 295 transitions. [2025-03-17 06:06:53,181 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 295 transitions. Word has length 145 [2025-03-17 06:06:53,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:06:53,182 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 295 transitions. [2025-03-17 06:06:53,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-17 06:06:53,182 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 295 transitions. [2025-03-17 06:06:53,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2025-03-17 06:06:53,184 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:06:53,184 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:06:53,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 06:06:53,184 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:06:53,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:06:53,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1323830829, now seen corresponding path program 1 times [2025-03-17 06:06:53,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:06:53,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819790497] [2025-03-17 06:06:53,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:06:53,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:06:53,216 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-17 06:06:53,325 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-17 06:06:53,325 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:06:53,326 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:07:03,449 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-17 06:07:03,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:07:03,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819790497] [2025-03-17 06:07:03,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819790497] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:07:03,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:07:03,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2025-03-17 06:07:03,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570391112] [2025-03-17 06:07:03,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:07:03,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-17 06:07:03,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:07:03,451 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-17 06:07:03,451 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2025-03-17 06:07:03,451 INFO L87 Difference]: Start difference. First operand 205 states and 295 transitions. Second operand has 24 states, 21 states have (on average 2.857142857142857) internal successors, (60), 24 states have internal predecessors, (60), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 6 states have call successors, (18) [2025-03-17 06:07:10,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-17 06:07:14,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:07:14,709 INFO L93 Difference]: Finished difference Result 428 states and 612 transitions. [2025-03-17 06:07:14,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-17 06:07:14,710 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 2.857142857142857) internal successors, (60), 24 states have internal predecessors, (60), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 6 states have call successors, (18) Word has length 147 [2025-03-17 06:07:14,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:07:14,712 INFO L225 Difference]: With dead ends: 428 [2025-03-17 06:07:14,713 INFO L226 Difference]: Without dead ends: 268 [2025-03-17 06:07:14,714 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=227, Invalid=1255, Unknown=0, NotChecked=0, Total=1482 [2025-03-17 06:07:14,714 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 503 mSDsluCounter, 1511 mSDsCounter, 0 mSdLazyCounter, 1991 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1644 SdHoareTripleChecker+Invalid, 2025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1991 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2025-03-17 06:07:14,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 1644 Invalid, 2025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1991 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2025-03-17 06:07:14,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2025-03-17 06:07:14,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 225. [2025-03-17 06:07:14,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 188 states have (on average 1.3670212765957446) internal successors, (257), 189 states have internal predecessors, (257), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2025-03-17 06:07:14,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 325 transitions. [2025-03-17 06:07:14,761 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 325 transitions. Word has length 147 [2025-03-17 06:07:14,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:07:14,762 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 325 transitions. [2025-03-17 06:07:14,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 2.857142857142857) internal successors, (60), 24 states have internal predecessors, (60), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 6 states have call successors, (18) [2025-03-17 06:07:14,762 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 325 transitions. [2025-03-17 06:07:14,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2025-03-17 06:07:14,763 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:07:14,763 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:07:14,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-17 06:07:14,763 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:07:14,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:07:14,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1617233836, now seen corresponding path program 1 times [2025-03-17 06:07:14,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:07:14,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514921492] [2025-03-17 06:07:14,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:07:14,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:07:14,789 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-17 06:07:14,842 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-17 06:07:14,842 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:07:14,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:07:17,802 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-17 06:07:17,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:07:17,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514921492] [2025-03-17 06:07:17,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514921492] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:07:17,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:07:17,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2025-03-17 06:07:17,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248781983] [2025-03-17 06:07:17,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:07:17,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-17 06:07:17,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:07:17,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-17 06:07:17,803 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2025-03-17 06:07:17,804 INFO L87 Difference]: Start difference. First operand 225 states and 325 transitions. Second operand has 15 states, 14 states have (on average 4.285714285714286) internal successors, (60), 15 states have internal predecessors, (60), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2025-03-17 06:07:20,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:07:20,118 INFO L93 Difference]: Finished difference Result 441 states and 633 transitions. [2025-03-17 06:07:20,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 06:07:20,119 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.285714285714286) internal successors, (60), 15 states have internal predecessors, (60), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 147 [2025-03-17 06:07:20,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:07:20,120 INFO L225 Difference]: With dead ends: 441 [2025-03-17 06:07:20,120 INFO L226 Difference]: Without dead ends: 261 [2025-03-17 06:07:20,121 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2025-03-17 06:07:20,121 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 345 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-17 06:07:20,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 1033 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-17 06:07:20,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2025-03-17 06:07:20,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 225. [2025-03-17 06:07:20,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 188 states have (on average 1.3563829787234043) internal successors, (255), 189 states have internal predecessors, (255), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2025-03-17 06:07:20,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 323 transitions. [2025-03-17 06:07:20,166 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 323 transitions. Word has length 147 [2025-03-17 06:07:20,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:07:20,166 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 323 transitions. [2025-03-17 06:07:20,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.285714285714286) internal successors, (60), 15 states have internal predecessors, (60), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2025-03-17 06:07:20,166 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 323 transitions. [2025-03-17 06:07:20,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2025-03-17 06:07:20,167 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:07:20,167 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:07:20,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-17 06:07:20,167 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:07:20,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:07:20,168 INFO L85 PathProgramCache]: Analyzing trace with hash -362216812, now seen corresponding path program 1 times [2025-03-17 06:07:20,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:07:20,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107103085] [2025-03-17 06:07:20,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:07:20,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:07:20,199 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-17 06:07:20,271 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-17 06:07:20,271 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:07:20,271 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:07:23,858 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-17 06:07:23,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:07:23,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107103085] [2025-03-17 06:07:23,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107103085] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:07:23,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:07:23,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2025-03-17 06:07:23,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889365363] [2025-03-17 06:07:23,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:07:23,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-17 06:07:23,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:07:23,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-17 06:07:23,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2025-03-17 06:07:23,861 INFO L87 Difference]: Start difference. First operand 225 states and 323 transitions. Second operand has 16 states, 15 states have (on average 4.0) internal successors, (60), 16 states have internal predecessors, (60), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) [2025-03-17 06:07:26,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:07:26,676 INFO L93 Difference]: Finished difference Result 441 states and 629 transitions. [2025-03-17 06:07:26,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:07:26,681 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.0) internal successors, (60), 16 states have internal predecessors, (60), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) Word has length 147 [2025-03-17 06:07:26,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:07:26,684 INFO L225 Difference]: With dead ends: 441 [2025-03-17 06:07:26,684 INFO L226 Difference]: Without dead ends: 261 [2025-03-17 06:07:26,685 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2025-03-17 06:07:26,687 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 425 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 1060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-17 06:07:26,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 913 Invalid, 1060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-17 06:07:26,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2025-03-17 06:07:26,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 225. [2025-03-17 06:07:26,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 188 states have (on average 1.351063829787234) internal successors, (254), 189 states have internal predecessors, (254), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2025-03-17 06:07:26,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 322 transitions. [2025-03-17 06:07:26,716 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 322 transitions. Word has length 147 [2025-03-17 06:07:26,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:07:26,717 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 322 transitions. [2025-03-17 06:07:26,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.0) internal successors, (60), 16 states have internal predecessors, (60), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) [2025-03-17 06:07:26,717 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 322 transitions. [2025-03-17 06:07:26,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2025-03-17 06:07:26,718 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:07:26,718 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:07:26,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-17 06:07:26,718 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:07:26,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:07:26,719 INFO L85 PathProgramCache]: Analyzing trace with hash -655619819, now seen corresponding path program 1 times [2025-03-17 06:07:26,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:07:26,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904452241] [2025-03-17 06:07:26,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:07:26,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:07:26,743 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-17 06:07:26,844 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-17 06:07:26,845 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:07:26,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:07:34,762 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-17 06:07:34,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:07:34,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904452241] [2025-03-17 06:07:34,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904452241] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:07:34,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:07:34,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2025-03-17 06:07:34,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225529524] [2025-03-17 06:07:34,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:07:34,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-17 06:07:34,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:07:34,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-17 06:07:34,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2025-03-17 06:07:34,763 INFO L87 Difference]: Start difference. First operand 225 states and 322 transitions. Second operand has 23 states, 20 states have (on average 3.0) internal successors, (60), 23 states have internal predecessors, (60), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 6 states have call successors, (18) [2025-03-17 06:07:42,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:07:42,525 INFO L93 Difference]: Finished difference Result 496 states and 703 transitions. [2025-03-17 06:07:42,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-17 06:07:42,526 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 3.0) internal successors, (60), 23 states have internal predecessors, (60), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 6 states have call successors, (18) Word has length 147 [2025-03-17 06:07:42,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:07:42,528 INFO L225 Difference]: With dead ends: 496 [2025-03-17 06:07:42,528 INFO L226 Difference]: Without dead ends: 316 [2025-03-17 06:07:42,529 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=252, Invalid=1388, Unknown=0, NotChecked=0, Total=1640 [2025-03-17 06:07:42,529 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 549 mSDsluCounter, 1638 mSDsCounter, 0 mSdLazyCounter, 1992 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 1787 SdHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2025-03-17 06:07:42,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 1787 Invalid, 2024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1992 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2025-03-17 06:07:42,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2025-03-17 06:07:42,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 237. [2025-03-17 06:07:42,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 200 states have (on average 1.36) internal successors, (272), 201 states have internal predecessors, (272), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2025-03-17 06:07:42,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 340 transitions. [2025-03-17 06:07:42,577 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 340 transitions. Word has length 147 [2025-03-17 06:07:42,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:07:42,578 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 340 transitions. [2025-03-17 06:07:42,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 3.0) internal successors, (60), 23 states have internal predecessors, (60), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 6 states have call successors, (18) [2025-03-17 06:07:42,578 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 340 transitions. [2025-03-17 06:07:42,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2025-03-17 06:07:42,579 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:07:42,580 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:07:42,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-17 06:07:42,580 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:07:42,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:07:42,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1509392871, now seen corresponding path program 1 times [2025-03-17 06:07:42,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:07:42,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190878526] [2025-03-17 06:07:42,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:07:42,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:07:42,617 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-17 06:07:42,838 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-17 06:07:42,838 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:07:42,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat