./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-84.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-84.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 645cc8cd2ca5c3df18e88a30b2b1ec0d9c7b704a87e37ccd990a4988acc7530a --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 06:13:46,040 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 06:13:46,095 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 06:13:46,100 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 06:13:46,103 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 06:13:46,117 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 06:13:46,117 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 06:13:46,117 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 06:13:46,118 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 06:13:46,118 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 06:13:46,118 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 06:13:46,118 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 06:13:46,118 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 06:13:46,118 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 06:13:46,118 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 06:13:46,118 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 06:13:46,118 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 06:13:46,118 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 06:13:46,118 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 06:13:46,118 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 06:13:46,118 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 06:13:46,118 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 06:13:46,118 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 06:13:46,119 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 06:13:46,119 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 06:13:46,119 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 06:13:46,119 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 06:13:46,119 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 06:13:46,119 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 06:13:46,119 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 06:13:46,119 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 06:13:46,119 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 06:13:46,119 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:13:46,119 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 06:13:46,119 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 06:13:46,119 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 06:13:46,119 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 06:13:46,119 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 06:13:46,119 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 06:13:46,119 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 06:13:46,119 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 06:13:46,119 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 06:13:46,119 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 06:13:46,120 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 -> 645cc8cd2ca5c3df18e88a30b2b1ec0d9c7b704a87e37ccd990a4988acc7530a [2025-03-17 06:13:46,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 06:13:46,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 06:13:46,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 06:13:46,361 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 06:13:46,361 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 06:13:46,362 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-84.i [2025-03-17 06:13:47,531 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5466ade25/68db1b8d78db4c55929d57cfe48779bc/FLAG50f46cb4b [2025-03-17 06:13:47,783 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 06:13:47,784 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-84.i [2025-03-17 06:13:47,794 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5466ade25/68db1b8d78db4c55929d57cfe48779bc/FLAG50f46cb4b [2025-03-17 06:13:48,083 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5466ade25/68db1b8d78db4c55929d57cfe48779bc [2025-03-17 06:13:48,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 06:13:48,087 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 06:13:48,088 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 06:13:48,089 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 06:13:48,092 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 06:13:48,093 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:13:48" (1/1) ... [2025-03-17 06:13:48,095 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a17b3c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:13:48, skipping insertion in model container [2025-03-17 06:13:48,095 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:13:48" (1/1) ... [2025-03-17 06:13:48,110 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 06:13:48,217 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-84.i[917,930] [2025-03-17 06:13:48,280 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:13:48,290 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 06:13:48,298 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-84.i[917,930] [2025-03-17 06:13:48,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:13:48,348 INFO L204 MainTranslator]: Completed translation [2025-03-17 06:13:48,348 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:13:48 WrapperNode [2025-03-17 06:13:48,348 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 06:13:48,350 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 06:13:48,350 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 06:13:48,350 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 06:13:48,354 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:13:48" (1/1) ... [2025-03-17 06:13:48,364 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:13:48" (1/1) ... [2025-03-17 06:13:48,393 INFO L138 Inliner]: procedures = 30, calls = 154, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 436 [2025-03-17 06:13:48,393 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 06:13:48,394 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 06:13:48,394 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 06:13:48,394 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 06:13:48,400 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:13:48" (1/1) ... [2025-03-17 06:13:48,400 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:13:48" (1/1) ... [2025-03-17 06:13:48,406 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:13:48" (1/1) ... [2025-03-17 06:13:48,417 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2025-03-17 06:13:48,417 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:13:48" (1/1) ... [2025-03-17 06:13:48,417 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:13:48" (1/1) ... [2025-03-17 06:13:48,427 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:13:48" (1/1) ... [2025-03-17 06:13:48,428 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:13:48" (1/1) ... [2025-03-17 06:13:48,430 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:13:48" (1/1) ... [2025-03-17 06:13:48,431 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:13:48" (1/1) ... [2025-03-17 06:13:48,437 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 06:13:48,438 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 06:13:48,438 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 06:13:48,438 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 06:13:48,439 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:13:48" (1/1) ... [2025-03-17 06:13:48,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:13:48,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:13:48,469 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 06:13:48,475 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 06:13:48,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 06:13:48,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2025-03-17 06:13:48,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2025-03-17 06:13:48,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2025-03-17 06:13:48,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-03-17 06:13:48,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2025-03-17 06:13:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-03-17 06:13:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 06:13:48,491 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 06:13:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-17 06:13:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 06:13:48,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 06:13:48,574 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 06:13:48,577 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 06:13:48,990 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L135: havoc property_#t~ite90#1;havoc property_#t~mem87#1;havoc property_#t~mem86#1;havoc property_#t~mem73#1;havoc property_#t~mem74#1;havoc property_#t~ite77#1;havoc property_#t~mem75#1;havoc property_#t~mem76#1;havoc property_#t~mem78#1;havoc property_#t~ite85#1;havoc property_#t~mem79#1;havoc property_#t~mem80#1;havoc property_#t~ite83#1;havoc property_#t~mem81#1;havoc property_#t~mem82#1;havoc property_#t~mem84#1;havoc property_#t~mem89#1;havoc property_#t~mem88#1;havoc property_#t~mem91#1;havoc property_#t~ite95#1;havoc property_#t~mem94#1;havoc property_#t~mem92#1;havoc property_#t~mem93#1;havoc property_#t~short96#1;havoc property_#t~mem97#1;havoc property_#t~mem98#1;havoc property_#t~ite107#1;havoc property_#t~mem99#1;havoc property_#t~mem100#1;havoc property_#t~mem101#1;havoc property_#t~ite106#1;havoc property_#t~mem105#1;havoc property_#t~mem104#1;havoc property_#t~mem102#1;havoc property_#t~mem103#1;havoc property_#t~short108#1;havoc property_#t~mem109#1;havoc property_#t~mem110#1;havoc property_#t~ite115#1;havoc property_#t~mem111#1;havoc property_#t~mem114#1;havoc property_#t~mem112#1;havoc property_#t~mem113#1;havoc property_#t~short116#1;havoc property_#t~mem118#1;havoc property_#t~mem117#1;havoc property_#t~short119#1; [2025-03-17 06:13:49,014 INFO L? ?]: Removed 96 outVars from TransFormulas that were not future-live. [2025-03-17 06:13:49,014 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 06:13:49,021 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 06:13:49,023 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 06:13:49,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:13:49 BoogieIcfgContainer [2025-03-17 06:13:49,024 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 06:13:49,025 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 06:13:49,026 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 06:13:49,029 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 06:13:49,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:13:48" (1/3) ... [2025-03-17 06:13:49,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d5bcfd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:13:49, skipping insertion in model container [2025-03-17 06:13:49,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:13:48" (2/3) ... [2025-03-17 06:13:49,031 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d5bcfd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:13:49, skipping insertion in model container [2025-03-17 06:13:49,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:13:49" (3/3) ... [2025-03-17 06:13:49,032 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-84.i [2025-03-17 06:13:49,043 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 06:13:49,044 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-sp_file-84.i that has 2 procedures, 97 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-17 06:13:49,088 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 06:13:49,097 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;@50313981, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 06:13:49,097 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 06:13:49,100 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 74 states have (on average 1.364864864864865) internal successors, (101), 75 states have internal predecessors, (101), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-17 06:13:49,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2025-03-17 06:13:49,112 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:13:49,112 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:13:49,113 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:13:49,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:13:49,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1422528057, now seen corresponding path program 1 times [2025-03-17 06:13:49,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:13:49,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192083342] [2025-03-17 06:13:49,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:13:49,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:13:49,223 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-03-17 06:13:49,275 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-03-17 06:13:49,275 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:13:49,275 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:13:49,427 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2025-03-17 06:13:49,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:13:49,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192083342] [2025-03-17 06:13:49,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192083342] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:13:49,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436804630] [2025-03-17 06:13:49,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:13:49,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:13:49,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:13:49,432 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 06:13:49,434 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 06:13:49,560 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-03-17 06:13:49,641 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-03-17 06:13:49,641 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:13:49,641 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:13:49,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 06:13:49,653 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:13:49,669 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2025-03-17 06:13:49,669 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:13:49,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436804630] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:13:49,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:13:49,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 06:13:49,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548728984] [2025-03-17 06:13:49,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:13:49,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 06:13:49,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:13:49,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 06:13:49,689 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 06:13:49,691 INFO L87 Difference]: Start difference. First operand has 97 states, 74 states have (on average 1.364864864864865) internal successors, (101), 75 states have internal predecessors, (101), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2025-03-17 06:13:49,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:13:49,710 INFO L93 Difference]: Finished difference Result 191 states and 300 transitions. [2025-03-17 06:13:49,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 06:13:49,711 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 146 [2025-03-17 06:13:49,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:13:49,715 INFO L225 Difference]: With dead ends: 191 [2025-03-17 06:13:49,717 INFO L226 Difference]: Without dead ends: 95 [2025-03-17 06:13:49,720 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 147 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 06:13:49,722 INFO L435 NwaCegarLoop]: 137 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, 137 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 06:13:49,722 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 06:13:49,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2025-03-17 06:13:49,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2025-03-17 06:13:49,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 73 states have (on average 1.3287671232876712) internal successors, (97), 73 states have internal predecessors, (97), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-17 06:13:49,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 137 transitions. [2025-03-17 06:13:49,754 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 137 transitions. Word has length 146 [2025-03-17 06:13:49,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:13:49,755 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 137 transitions. [2025-03-17 06:13:49,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2025-03-17 06:13:49,755 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 137 transitions. [2025-03-17 06:13:49,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2025-03-17 06:13:49,757 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:13:49,757 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:13:49,765 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 06:13:49,958 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 06:13:49,958 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:13:49,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:13:49,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1143692971, now seen corresponding path program 1 times [2025-03-17 06:13:49,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:13:49,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437020648] [2025-03-17 06:13:49,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:13:49,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:13:50,002 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-03-17 06:13:50,043 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-03-17 06:13:50,046 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:13:50,046 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:13:50,757 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-17 06:13:50,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:13:50,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437020648] [2025-03-17 06:13:50,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437020648] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:13:50,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:13:50,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 06:13:50,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051741129] [2025-03-17 06:13:50,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:13:50,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:13:50,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:13:50,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:13:50,762 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:13:50,762 INFO L87 Difference]: Start difference. First operand 95 states and 137 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-03-17 06:13:51,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:13:51,052 INFO L93 Difference]: Finished difference Result 284 states and 410 transitions. [2025-03-17 06:13:51,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:13:51,054 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 146 [2025-03-17 06:13:51,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:13:51,056 INFO L225 Difference]: With dead ends: 284 [2025-03-17 06:13:51,056 INFO L226 Difference]: Without dead ends: 190 [2025-03-17 06:13:51,057 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-17 06:13:51,057 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 102 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 06:13:51,059 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 414 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 06:13:51,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2025-03-17 06:13:51,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 161. [2025-03-17 06:13:51,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 118 states have (on average 1.2881355932203389) internal successors, (152), 118 states have internal predecessors, (152), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2025-03-17 06:13:51,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 232 transitions. [2025-03-17 06:13:51,090 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 232 transitions. Word has length 146 [2025-03-17 06:13:51,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:13:51,091 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 232 transitions. [2025-03-17 06:13:51,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-03-17 06:13:51,091 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 232 transitions. [2025-03-17 06:13:51,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-03-17 06:13:51,094 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:13:51,094 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:13:51,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 06:13:51,095 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:13:51,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:13:51,095 INFO L85 PathProgramCache]: Analyzing trace with hash 510976775, now seen corresponding path program 1 times [2025-03-17 06:13:51,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:13:51,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505911715] [2025-03-17 06:13:51,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:13:51,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:13:51,140 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-03-17 06:13:51,170 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-03-17 06:13:51,171 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:13:51,171 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:13:51,314 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-17 06:13:51,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:13:51,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505911715] [2025-03-17 06:13:51,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505911715] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:13:51,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:13:51,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 06:13:51,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761078619] [2025-03-17 06:13:51,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:13:51,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 06:13:51,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:13:51,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 06:13:51,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 06:13:51,317 INFO L87 Difference]: Start difference. First operand 161 states and 232 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-03-17 06:13:51,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:13:51,345 INFO L93 Difference]: Finished difference Result 258 states and 372 transitions. [2025-03-17 06:13:51,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 06:13:51,347 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 154 [2025-03-17 06:13:51,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:13:51,349 INFO L225 Difference]: With dead ends: 258 [2025-03-17 06:13:51,349 INFO L226 Difference]: Without dead ends: 164 [2025-03-17 06:13:51,349 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 06:13:51,350 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 1 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 06:13:51,350 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 393 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 06:13:51,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2025-03-17 06:13:51,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 163. [2025-03-17 06:13:51,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 120 states have (on average 1.2833333333333334) internal successors, (154), 120 states have internal predecessors, (154), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2025-03-17 06:13:51,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 234 transitions. [2025-03-17 06:13:51,368 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 234 transitions. Word has length 154 [2025-03-17 06:13:51,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:13:51,369 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 234 transitions. [2025-03-17 06:13:51,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-03-17 06:13:51,369 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 234 transitions. [2025-03-17 06:13:51,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-03-17 06:13:51,371 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:13:51,371 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:13:51,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 06:13:51,371 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:13:51,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:13:51,372 INFO L85 PathProgramCache]: Analyzing trace with hash 511900296, now seen corresponding path program 1 times [2025-03-17 06:13:51,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:13:51,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850702352] [2025-03-17 06:13:51,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:13:51,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:13:51,407 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-03-17 06:13:51,635 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-03-17 06:13:51,635 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:13:51,635 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:13:56,657 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-17 06:13:56,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:13:56,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850702352] [2025-03-17 06:13:56,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850702352] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:13:56,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:13:56,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2025-03-17 06:13:56,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525516643] [2025-03-17 06:13:56,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:13:56,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-17 06:13:56,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:13:56,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-17 06:13:56,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2025-03-17 06:13:56,659 INFO L87 Difference]: Start difference. First operand 163 states and 234 transitions. Second operand has 18 states, 16 states have (on average 3.5625) internal successors, (57), 18 states have internal predecessors, (57), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) [2025-03-17 06:13:58,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:13:58,930 INFO L93 Difference]: Finished difference Result 313 states and 447 transitions. [2025-03-17 06:13:58,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 06:13:58,930 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.5625) internal successors, (57), 18 states have internal predecessors, (57), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) Word has length 154 [2025-03-17 06:13:58,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:13:58,934 INFO L225 Difference]: With dead ends: 313 [2025-03-17 06:13:58,934 INFO L226 Difference]: Without dead ends: 217 [2025-03-17 06:13:58,935 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2025-03-17 06:13:58,937 INFO L435 NwaCegarLoop]: 93 mSDtfsCounter, 235 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-17 06:13:58,937 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 819 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1412 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-17 06:13:58,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2025-03-17 06:13:58,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 189. [2025-03-17 06:13:58,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 146 states have (on average 1.3082191780821917) internal successors, (191), 146 states have internal predecessors, (191), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2025-03-17 06:13:58,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 271 transitions. [2025-03-17 06:13:58,962 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 271 transitions. Word has length 154 [2025-03-17 06:13:58,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:13:58,963 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 271 transitions. [2025-03-17 06:13:58,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.5625) internal successors, (57), 18 states have internal predecessors, (57), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) [2025-03-17 06:13:58,963 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 271 transitions. [2025-03-17 06:13:58,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-03-17 06:13:58,964 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:13:58,964 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:13:58,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 06:13:58,965 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:13:58,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:13:58,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1315597991, now seen corresponding path program 1 times [2025-03-17 06:13:58,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:13:58,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465654034] [2025-03-17 06:13:58,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:13:58,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:13:58,988 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-03-17 06:13:59,177 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-03-17 06:13:59,177 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:13:59,177 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:14:04,219 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-17 06:14:04,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:14:04,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465654034] [2025-03-17 06:14:04,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465654034] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:14:04,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:14:04,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2025-03-17 06:14:04,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731308617] [2025-03-17 06:14:04,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:14:04,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-17 06:14:04,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:14:04,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-17 06:14:04,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2025-03-17 06:14:04,222 INFO L87 Difference]: Start difference. First operand 189 states and 271 transitions. Second operand has 20 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 20 states have internal predecessors, (58), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) [2025-03-17 06:14:07,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:14:07,712 INFO L93 Difference]: Finished difference Result 456 states and 640 transitions. [2025-03-17 06:14:07,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-17 06:14:07,712 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 20 states have internal predecessors, (58), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) Word has length 155 [2025-03-17 06:14:07,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:14:07,714 INFO L225 Difference]: With dead ends: 456 [2025-03-17 06:14:07,714 INFO L226 Difference]: Without dead ends: 344 [2025-03-17 06:14:07,715 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=255, Invalid=1151, Unknown=0, NotChecked=0, Total=1406 [2025-03-17 06:14:07,715 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 451 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 2003 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1375 SdHoareTripleChecker+Invalid, 2019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-17 06:14:07,715 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 1375 Invalid, 2019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2003 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-17 06:14:07,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2025-03-17 06:14:07,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 195. [2025-03-17 06:14:07,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 152 states have (on average 1.3223684210526316) internal successors, (201), 152 states have internal predecessors, (201), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2025-03-17 06:14:07,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 281 transitions. [2025-03-17 06:14:07,745 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 281 transitions. Word has length 155 [2025-03-17 06:14:07,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:14:07,745 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 281 transitions. [2025-03-17 06:14:07,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 20 states have internal predecessors, (58), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) [2025-03-17 06:14:07,745 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 281 transitions. [2025-03-17 06:14:07,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-03-17 06:14:07,746 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:14:07,746 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:14:07,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 06:14:07,746 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:14:07,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:14:07,747 INFO L85 PathProgramCache]: Analyzing trace with hash -722458298, now seen corresponding path program 1 times [2025-03-17 06:14:07,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:14:07,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465607948] [2025-03-17 06:14:07,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:14:07,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:14:07,776 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-03-17 06:14:07,967 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-03-17 06:14:07,967 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:14:07,967 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:14:11,444 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-17 06:14:11,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:14:11,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465607948] [2025-03-17 06:14:11,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465607948] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:14:11,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:14:11,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2025-03-17 06:14:11,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628161935] [2025-03-17 06:14:11,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:14:11,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-17 06:14:11,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:14:11,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-17 06:14:11,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2025-03-17 06:14:11,445 INFO L87 Difference]: Start difference. First operand 195 states and 281 transitions. Second operand has 17 states, 16 states have (on average 3.625) internal successors, (58), 17 states have internal predecessors, (58), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2025-03-17 06:14:13,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:14:13,301 INFO L93 Difference]: Finished difference Result 348 states and 498 transitions. [2025-03-17 06:14:13,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-17 06:14:13,302 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.625) internal successors, (58), 17 states have internal predecessors, (58), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) Word has length 155 [2025-03-17 06:14:13,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:14:13,303 INFO L225 Difference]: With dead ends: 348 [2025-03-17 06:14:13,303 INFO L226 Difference]: Without dead ends: 233 [2025-03-17 06:14:13,304 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2025-03-17 06:14:13,304 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 187 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 1272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-17 06:14:13,305 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 759 Invalid, 1272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-17 06:14:13,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2025-03-17 06:14:13,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 189. [2025-03-17 06:14:13,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 146 states have (on average 1.3082191780821917) internal successors, (191), 146 states have internal predecessors, (191), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2025-03-17 06:14:13,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 271 transitions. [2025-03-17 06:14:13,325 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 271 transitions. Word has length 155 [2025-03-17 06:14:13,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:14:13,325 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 271 transitions. [2025-03-17 06:14:13,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.625) internal successors, (58), 17 states have internal predecessors, (58), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2025-03-17 06:14:13,325 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 271 transitions. [2025-03-17 06:14:13,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-03-17 06:14:13,326 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:14:13,326 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:14:13,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 06:14:13,326 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:14:13,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:14:13,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1465646166, now seen corresponding path program 1 times [2025-03-17 06:14:13,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:14:13,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182471010] [2025-03-17 06:14:13,326 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:14:13,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:14:13,347 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-17 06:14:13,389 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-17 06:14:13,390 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:14:13,390 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:14:15,949 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-17 06:14:15,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:14:15,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182471010] [2025-03-17 06:14:15,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182471010] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:14:15,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:14:15,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2025-03-17 06:14:15,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130346409] [2025-03-17 06:14:15,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:14:15,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-17 06:14:15,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:14:15,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-17 06:14:15,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2025-03-17 06:14:15,951 INFO L87 Difference]: Start difference. First operand 189 states and 271 transitions. Second operand has 16 states, 14 states have (on average 4.214285714285714) internal successors, (59), 16 states have internal predecessors, (59), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) [2025-03-17 06:14:17,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:14:17,491 INFO L93 Difference]: Finished difference Result 374 states and 530 transitions. [2025-03-17 06:14:17,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 06:14:17,491 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 4.214285714285714) internal successors, (59), 16 states have internal predecessors, (59), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) Word has length 156 [2025-03-17 06:14:17,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:14:17,495 INFO L225 Difference]: With dead ends: 374 [2025-03-17 06:14:17,495 INFO L226 Difference]: Without dead ends: 262 [2025-03-17 06:14:17,495 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2025-03-17 06:14:17,496 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 347 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-17 06:14:17,497 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 515 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-17 06:14:17,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2025-03-17 06:14:17,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 259. [2025-03-17 06:14:17,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 212 states have (on average 1.330188679245283) internal successors, (282), 213 states have internal predecessors, (282), 42 states have call successors, (42), 4 states have call predecessors, (42), 4 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2025-03-17 06:14:17,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 366 transitions. [2025-03-17 06:14:17,526 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 366 transitions. Word has length 156 [2025-03-17 06:14:17,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:14:17,526 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 366 transitions. [2025-03-17 06:14:17,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 4.214285714285714) internal successors, (59), 16 states have internal predecessors, (59), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) [2025-03-17 06:14:17,526 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 366 transitions. [2025-03-17 06:14:17,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-03-17 06:14:17,527 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:14:17,527 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:14:17,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 06:14:17,528 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:14:17,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:14:17,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1976180343, now seen corresponding path program 1 times [2025-03-17 06:14:17,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:14:17,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592337137] [2025-03-17 06:14:17,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:14:17,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:14:17,549 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-17 06:14:17,590 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-17 06:14:17,590 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:14:17,590 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:14:20,511 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-17 06:14:20,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:14:20,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592337137] [2025-03-17 06:14:20,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592337137] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:14:20,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:14:20,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2025-03-17 06:14:20,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324539292] [2025-03-17 06:14:20,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:14:20,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-17 06:14:20,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:14:20,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-17 06:14:20,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2025-03-17 06:14:20,512 INFO L87 Difference]: Start difference. First operand 259 states and 366 transitions. Second operand has 16 states, 13 states have (on average 4.538461538461538) internal successors, (59), 16 states have internal predecessors, (59), 5 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 5 states have call successors, (20) [2025-03-17 06:14:22,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:14:22,087 INFO L93 Difference]: Finished difference Result 424 states and 598 transitions. [2025-03-17 06:14:22,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:14:22,088 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 4.538461538461538) internal successors, (59), 16 states have internal predecessors, (59), 5 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 5 states have call successors, (20) Word has length 156 [2025-03-17 06:14:22,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:14:22,089 INFO L225 Difference]: With dead ends: 424 [2025-03-17 06:14:22,089 INFO L226 Difference]: Without dead ends: 260 [2025-03-17 06:14:22,090 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2025-03-17 06:14:22,090 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 203 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-17 06:14:22,090 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 710 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1213 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-17 06:14:22,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2025-03-17 06:14:22,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 257. [2025-03-17 06:14:22,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 210 states have (on average 1.3238095238095238) internal successors, (278), 211 states have internal predecessors, (278), 42 states have call successors, (42), 4 states have call predecessors, (42), 4 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2025-03-17 06:14:22,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 362 transitions. [2025-03-17 06:14:22,119 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 362 transitions. Word has length 156 [2025-03-17 06:14:22,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:14:22,119 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 362 transitions. [2025-03-17 06:14:22,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 4.538461538461538) internal successors, (59), 16 states have internal predecessors, (59), 5 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 5 states have call successors, (20) [2025-03-17 06:14:22,119 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 362 transitions. [2025-03-17 06:14:22,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-03-17 06:14:22,120 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:14:22,120 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:14:22,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 06:14:22,120 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:14:22,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:14:22,121 INFO L85 PathProgramCache]: Analyzing trace with hash 657179402, now seen corresponding path program 1 times [2025-03-17 06:14:22,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:14:22,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649765302] [2025-03-17 06:14:22,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:14:22,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:14:22,147 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-17 06:14:22,181 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-17 06:14:22,181 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:14:22,182 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:14:24,377 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-17 06:14:24,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:14:24,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649765302] [2025-03-17 06:14:24,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649765302] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:14:24,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:14:24,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2025-03-17 06:14:24,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104303141] [2025-03-17 06:14:24,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:14:24,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-17 06:14:24,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:14:24,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-17 06:14:24,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2025-03-17 06:14:24,379 INFO L87 Difference]: Start difference. First operand 257 states and 362 transitions. Second operand has 15 states, 13 states have (on average 4.538461538461538) internal successors, (59), 15 states have internal predecessors, (59), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) [2025-03-17 06:14:25,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:14:25,649 INFO L93 Difference]: Finished difference Result 483 states and 677 transitions. [2025-03-17 06:14:25,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 06:14:25,649 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.538461538461538) internal successors, (59), 15 states have internal predecessors, (59), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) Word has length 156 [2025-03-17 06:14:25,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:14:25,652 INFO L225 Difference]: With dead ends: 483 [2025-03-17 06:14:25,652 INFO L226 Difference]: Without dead ends: 321 [2025-03-17 06:14:25,653 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2025-03-17 06:14:25,653 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 310 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-17 06:14:25,653 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 458 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-17 06:14:25,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2025-03-17 06:14:25,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 285. [2025-03-17 06:14:25,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 238 states have (on average 1.3319327731092436) internal successors, (317), 239 states have internal predecessors, (317), 42 states have call successors, (42), 4 states have call predecessors, (42), 4 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2025-03-17 06:14:25,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 401 transitions. [2025-03-17 06:14:25,688 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 401 transitions. Word has length 156 [2025-03-17 06:14:25,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:14:25,688 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 401 transitions. [2025-03-17 06:14:25,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.538461538461538) internal successors, (59), 15 states have internal predecessors, (59), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) [2025-03-17 06:14:25,689 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 401 transitions. [2025-03-17 06:14:25,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-03-17 06:14:25,690 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:14:25,690 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:14:25,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 06:14:25,690 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:14:25,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:14:25,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1399375142, now seen corresponding path program 1 times [2025-03-17 06:14:25,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:14:25,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829091518] [2025-03-17 06:14:25,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:14:25,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:14:25,715 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-17 06:14:25,818 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-17 06:14:25,819 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:14:25,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat