./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-39.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-39.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 9000cc374a0af085b03570a511ad19fd711a120ab7f5d5a9a2c4565265355a73 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 06:08:15,752 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 06:08:15,827 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 06:08:15,841 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 06:08:15,843 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 06:08:15,885 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 06:08:15,885 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 06:08:15,886 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 06:08:15,886 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 06:08:15,886 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 06:08:15,886 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 06:08:15,886 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 06:08:15,886 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 06:08:15,886 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 06:08:15,887 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 06:08:15,887 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 06:08:15,887 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 06:08:15,887 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 06:08:15,887 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 06:08:15,887 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 06:08:15,887 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 06:08:15,887 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 06:08:15,887 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 06:08:15,887 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 06:08:15,887 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 06:08:15,888 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 06:08:15,888 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 06:08:15,888 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 06:08:15,888 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 06:08:15,888 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 06:08:15,888 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 06:08:15,888 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 06:08:15,888 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:08:15,888 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 06:08:15,888 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 06:08:15,889 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 06:08:15,889 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 06:08:15,889 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 06:08:15,889 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 06:08:15,889 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 06:08:15,889 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 06:08:15,889 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 06:08:15,889 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 06:08:15,889 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 -> 9000cc374a0af085b03570a511ad19fd711a120ab7f5d5a9a2c4565265355a73 [2025-03-17 06:08:16,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 06:08:16,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 06:08:16,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 06:08:16,389 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 06:08:16,389 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 06:08:16,394 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-39.i [2025-03-17 06:08:17,614 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d84381907/30908c8b647d4d9b8c52ccdb5f78fc45/FLAGf7f9326aa [2025-03-17 06:08:17,871 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 06:08:17,872 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-39.i [2025-03-17 06:08:17,885 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d84381907/30908c8b647d4d9b8c52ccdb5f78fc45/FLAGf7f9326aa [2025-03-17 06:08:18,174 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d84381907/30908c8b647d4d9b8c52ccdb5f78fc45 [2025-03-17 06:08:18,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 06:08:18,177 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 06:08:18,178 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 06:08:18,178 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 06:08:18,181 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 06:08:18,181 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:08:18" (1/1) ... [2025-03-17 06:08:18,184 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77b13c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:18, skipping insertion in model container [2025-03-17 06:08:18,184 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:08:18" (1/1) ... [2025-03-17 06:08:18,197 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 06:08:18,291 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-39.i[917,930] [2025-03-17 06:08:18,343 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:08:18,353 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 06:08:18,365 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-39.i[917,930] [2025-03-17 06:08:18,392 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:08:18,408 INFO L204 MainTranslator]: Completed translation [2025-03-17 06:08:18,409 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:18 WrapperNode [2025-03-17 06:08:18,409 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 06:08:18,410 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 06:08:18,410 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 06:08:18,410 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 06:08:18,414 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:18" (1/1) ... [2025-03-17 06:08:18,427 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:18" (1/1) ... [2025-03-17 06:08:18,470 INFO L138 Inliner]: procedures = 30, calls = 188, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 609 [2025-03-17 06:08:18,470 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 06:08:18,471 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 06:08:18,473 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 06:08:18,474 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 06:08:18,492 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:18" (1/1) ... [2025-03-17 06:08:18,492 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:18" (1/1) ... [2025-03-17 06:08:18,498 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:18" (1/1) ... [2025-03-17 06:08:18,514 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2025-03-17 06:08:18,514 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:18" (1/1) ... [2025-03-17 06:08:18,514 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:18" (1/1) ... [2025-03-17 06:08:18,526 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:18" (1/1) ... [2025-03-17 06:08:18,530 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:18" (1/1) ... [2025-03-17 06:08:18,532 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:18" (1/1) ... [2025-03-17 06:08:18,533 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:18" (1/1) ... [2025-03-17 06:08:18,535 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 06:08:18,536 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 06:08:18,536 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 06:08:18,536 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 06:08:18,536 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:18" (1/1) ... [2025-03-17 06:08:18,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:08:18,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:08:18,562 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 06:08:18,564 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 06:08:18,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 06:08:18,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2025-03-17 06:08:18,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2025-03-17 06:08:18,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2025-03-17 06:08:18,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-03-17 06:08:18,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2025-03-17 06:08:18,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-03-17 06:08:18,581 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 06:08:18,581 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 06:08:18,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-17 06:08:18,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 06:08:18,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 06:08:18,692 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 06:08:18,693 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 06:08:19,085 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L118: havoc property_#t~mem113#1;havoc property_#t~mem106#1;havoc property_#t~mem112#1;havoc property_#t~mem107#1;havoc property_#t~mem108#1;havoc property_#t~ite111#1;havoc property_#t~mem109#1;havoc property_#t~mem110#1;havoc property_#t~mem114#1;havoc property_#t~mem115#1;havoc property_#t~ite131#1;havoc property_#t~mem116#1;havoc property_#t~mem117#1;havoc property_#t~ite122#1;havoc property_#t~mem118#1;havoc property_#t~mem119#1;havoc property_#t~mem120#1;havoc property_#t~mem121#1;havoc property_#t~mem123#1;havoc property_#t~ite128#1;havoc property_#t~mem125#1;havoc property_#t~mem124#1;havoc property_#t~mem127#1;havoc property_#t~mem126#1;havoc property_#t~mem130#1;havoc property_#t~mem129#1;havoc property_#t~short132#1;havoc property_#t~mem136#1;havoc property_#t~mem133#1;havoc property_#t~mem134#1;havoc property_#t~bitwise135#1;havoc property_#t~mem137#1;havoc property_#t~ite176#1;havoc property_#t~mem138#1;havoc property_#t~mem139#1;havoc property_#t~mem142#1;havoc property_#t~mem140#1;havoc property_#t~mem141#1;havoc property_#t~ite173#1;havoc property_#t~mem170#1;havoc property_#t~mem148#1;havoc property_#t~mem143#1;havoc property_#t~mem144#1;havoc property_#t~ite147#1;havoc property_#t~mem145#1;havoc property_#t~mem146#1;havoc property_#t~ite155#1;havoc property_#t~mem149#1;havoc property_#t~mem150#1;havoc property_#t~mem151#1;havoc property_#t~ite154#1;havoc property_#t~mem152#1;havoc property_#t~mem153#1;havoc property_#t~ite169#1;havoc property_#t~mem161#1;havoc property_#t~mem156#1;havoc property_#t~mem157#1;havoc property_#t~ite160#1;havoc property_#t~mem158#1;havoc property_#t~mem159#1;havoc property_#t~ite168#1;havoc property_#t~mem162#1;havoc property_#t~mem163#1;havoc property_#t~mem164#1;havoc property_#t~ite167#1;havoc property_#t~mem165#1;havoc property_#t~mem166#1;havoc property_#t~mem172#1;havoc property_#t~mem171#1;havoc property_#t~mem175#1;havoc property_#t~mem174#1;havoc property_#t~short177#1; [2025-03-17 06:08:19,121 INFO L? ?]: Removed 186 outVars from TransFormulas that were not future-live. [2025-03-17 06:08:19,122 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 06:08:19,132 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 06:08:19,132 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 06:08:19,132 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:08:19 BoogieIcfgContainer [2025-03-17 06:08:19,132 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 06:08:19,136 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 06:08:19,136 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 06:08:19,139 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 06:08:19,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:08:18" (1/3) ... [2025-03-17 06:08:19,140 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2edcf01f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:08:19, skipping insertion in model container [2025-03-17 06:08:19,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:18" (2/3) ... [2025-03-17 06:08:19,140 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2edcf01f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:08:19, skipping insertion in model container [2025-03-17 06:08:19,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:08:19" (3/3) ... [2025-03-17 06:08:19,142 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-39.i [2025-03-17 06:08:19,154 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 06:08:19,155 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-sp_file-39.i that has 2 procedures, 114 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-17 06:08:19,190 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 06:08:19,198 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2ba05643, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 06:08:19,199 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 06:08:19,202 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 95 states have (on average 1.4526315789473685) internal successors, (138), 96 states have internal predecessors, (138), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-17 06:08:19,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2025-03-17 06:08:19,211 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:08:19,211 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:08:19,212 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:08:19,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:08:19,215 INFO L85 PathProgramCache]: Analyzing trace with hash 696993111, now seen corresponding path program 1 times [2025-03-17 06:08:19,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:08:19,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705944713] [2025-03-17 06:08:19,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:08:19,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:08:19,329 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-03-17 06:08:19,375 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-03-17 06:08:19,376 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:08:19,376 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:08:19,550 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2025-03-17 06:08:19,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:08:19,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705944713] [2025-03-17 06:08:19,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705944713] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:08:19,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790014755] [2025-03-17 06:08:19,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:08:19,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:08:19,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:08:19,556 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 06:08:19,558 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 06:08:19,681 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-03-17 06:08:19,753 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-03-17 06:08:19,753 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:08:19,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:08:19,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 06:08:19,767 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:08:19,786 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2025-03-17 06:08:19,786 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:08:19,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790014755] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:08:19,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:08:19,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 06:08:19,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603698297] [2025-03-17 06:08:19,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:08:19,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 06:08:19,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:08:19,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 06:08:19,803 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 06:08:19,805 INFO L87 Difference]: Start difference. First operand has 114 states, 95 states have (on average 1.4526315789473685) internal successors, (138), 96 states have internal predecessors, (138), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-17 06:08:19,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:08:19,825 INFO L93 Difference]: Finished difference Result 225 states and 354 transitions. [2025-03-17 06:08:19,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 06:08:19,827 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 124 [2025-03-17 06:08:19,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:08:19,833 INFO L225 Difference]: With dead ends: 225 [2025-03-17 06:08:19,833 INFO L226 Difference]: Without dead ends: 112 [2025-03-17 06:08:19,836 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 125 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 06:08:19,839 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 06:08:19,839 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 164 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 06:08:19,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2025-03-17 06:08:19,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2025-03-17 06:08:19,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 94 states have (on average 1.425531914893617) internal successors, (134), 94 states have internal predecessors, (134), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-17 06:08:19,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 166 transitions. [2025-03-17 06:08:19,871 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 166 transitions. Word has length 124 [2025-03-17 06:08:19,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:08:19,871 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 166 transitions. [2025-03-17 06:08:19,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-17 06:08:19,871 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 166 transitions. [2025-03-17 06:08:19,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2025-03-17 06:08:19,873 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:08:19,873 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:08:19,881 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 06:08:20,074 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 06:08:20,074 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:08:20,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:08:20,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1377063947, now seen corresponding path program 1 times [2025-03-17 06:08:20,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:08:20,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271451812] [2025-03-17 06:08:20,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:08:20,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:08:20,138 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-03-17 06:08:20,340 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-03-17 06:08:20,340 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:08:20,340 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:08:27,738 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 06:08:27,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:08:27,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271451812] [2025-03-17 06:08:27,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271451812] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:08:27,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:08:27,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2025-03-17 06:08:27,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223291006] [2025-03-17 06:08:27,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:08:27,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-17 06:08:27,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:08:27,741 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-17 06:08:27,741 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2025-03-17 06:08:27,741 INFO L87 Difference]: Start difference. First operand 112 states and 166 transitions. Second operand has 17 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 17 states have internal predecessors, (47), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 4 states have call successors, (16) [2025-03-17 06:08:32,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:08:32,868 INFO L93 Difference]: Finished difference Result 283 states and 420 transitions. [2025-03-17 06:08:32,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-17 06:08:32,872 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 17 states have internal predecessors, (47), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 4 states have call successors, (16) Word has length 124 [2025-03-17 06:08:32,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:08:32,875 INFO L225 Difference]: With dead ends: 283 [2025-03-17 06:08:32,876 INFO L226 Difference]: Without dead ends: 172 [2025-03-17 06:08:32,879 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2025-03-17 06:08:32,880 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 696 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 1561 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-03-17 06:08:32,880 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 777 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1561 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-03-17 06:08:32,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2025-03-17 06:08:32,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 122. [2025-03-17 06:08:32,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 104 states have (on average 1.4230769230769231) internal successors, (148), 104 states have internal predecessors, (148), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-17 06:08:32,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 180 transitions. [2025-03-17 06:08:32,909 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 180 transitions. Word has length 124 [2025-03-17 06:08:32,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:08:32,910 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 180 transitions. [2025-03-17 06:08:32,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 17 states have internal predecessors, (47), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 4 states have call successors, (16) [2025-03-17 06:08:32,910 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 180 transitions. [2025-03-17 06:08:32,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2025-03-17 06:08:32,914 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:08:32,915 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:08:32,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 06:08:32,915 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:08:32,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:08:32,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1110448886, now seen corresponding path program 1 times [2025-03-17 06:08:32,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:08:32,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559909271] [2025-03-17 06:08:32,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:08:32,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:08:32,954 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-03-17 06:08:32,986 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-03-17 06:08:32,993 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:08:32,996 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:08:35,069 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 06:08:35,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:08:35,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559909271] [2025-03-17 06:08:35,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559909271] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:08:35,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:08:35,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-17 06:08:35,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841634790] [2025-03-17 06:08:35,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:08:35,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 06:08:35,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:08:35,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 06:08:35,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2025-03-17 06:08:35,071 INFO L87 Difference]: Start difference. First operand 122 states and 180 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-17 06:08:36,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:08:36,582 INFO L93 Difference]: Finished difference Result 364 states and 536 transitions. [2025-03-17 06:08:36,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 06:08:36,583 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 124 [2025-03-17 06:08:36,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:08:36,586 INFO L225 Difference]: With dead ends: 364 [2025-03-17 06:08:36,587 INFO L226 Difference]: Without dead ends: 243 [2025-03-17 06:08:36,588 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2025-03-17 06:08:36,589 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 707 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-17 06:08:36,589 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [707 Valid, 563 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-17 06:08:36,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2025-03-17 06:08:36,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 188. [2025-03-17 06:08:36,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 165 states have (on average 1.4303030303030304) internal successors, (236), 166 states have internal predecessors, (236), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-17 06:08:36,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 276 transitions. [2025-03-17 06:08:36,614 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 276 transitions. Word has length 124 [2025-03-17 06:08:36,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:08:36,614 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 276 transitions. [2025-03-17 06:08:36,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-17 06:08:36,614 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 276 transitions. [2025-03-17 06:08:36,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2025-03-17 06:08:36,616 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:08:36,616 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:08:36,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 06:08:36,616 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:08:36,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:08:36,616 INFO L85 PathProgramCache]: Analyzing trace with hash -23754250, now seen corresponding path program 1 times [2025-03-17 06:08:36,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:08:36,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532087675] [2025-03-17 06:08:36,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:08:36,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:08:36,642 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-03-17 06:08:36,689 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-03-17 06:08:36,689 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:08:36,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:08:40,330 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 06:08:40,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:08:40,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532087675] [2025-03-17 06:08:40,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532087675] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:08:40,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:08:40,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2025-03-17 06:08:40,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280204695] [2025-03-17 06:08:40,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:08:40,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-17 06:08:40,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:08:40,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-17 06:08:40,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2025-03-17 06:08:40,335 INFO L87 Difference]: Start difference. First operand 188 states and 276 transitions. Second operand has 16 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 16 states have internal predecessors, (47), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2025-03-17 06:08:44,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:08:44,080 INFO L93 Difference]: Finished difference Result 487 states and 707 transitions. [2025-03-17 06:08:44,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 06:08:44,082 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 16 states have internal predecessors, (47), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) Word has length 124 [2025-03-17 06:08:44,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:08:44,085 INFO L225 Difference]: With dead ends: 487 [2025-03-17 06:08:44,088 INFO L226 Difference]: Without dead ends: 300 [2025-03-17 06:08:44,090 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2025-03-17 06:08:44,091 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 899 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 1713 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 1838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-17 06:08:44,091 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 872 Invalid, 1838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1713 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-17 06:08:44,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2025-03-17 06:08:44,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 154. [2025-03-17 06:08:44,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 135 states have (on average 1.4222222222222223) internal successors, (192), 135 states have internal predecessors, (192), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-17 06:08:44,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 224 transitions. [2025-03-17 06:08:44,135 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 224 transitions. Word has length 124 [2025-03-17 06:08:44,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:08:44,136 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 224 transitions. [2025-03-17 06:08:44,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 16 states have internal predecessors, (47), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2025-03-17 06:08:44,136 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 224 transitions. [2025-03-17 06:08:44,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2025-03-17 06:08:44,141 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:08:44,141 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:08:44,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 06:08:44,141 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:08:44,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:08:44,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1831208713, now seen corresponding path program 1 times [2025-03-17 06:08:44,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:08:44,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587704472] [2025-03-17 06:08:44,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:08:44,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:08:44,189 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-03-17 06:08:44,387 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-03-17 06:08:44,393 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:08:44,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:08:51,164 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 06:08:51,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:08:51,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587704472] [2025-03-17 06:08:51,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587704472] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:08:51,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:08:51,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-17 06:08:51,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883532425] [2025-03-17 06:08:51,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:08:51,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 06:08:51,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:08:51,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 06:08:51,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2025-03-17 06:08:51,170 INFO L87 Difference]: Start difference. First operand 154 states and 224 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-17 06:08:53,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:08:53,511 INFO L93 Difference]: Finished difference Result 361 states and 527 transitions. [2025-03-17 06:08:53,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 06:08:53,511 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 124 [2025-03-17 06:08:53,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:08:53,525 INFO L225 Difference]: With dead ends: 361 [2025-03-17 06:08:53,525 INFO L226 Difference]: Without dead ends: 208 [2025-03-17 06:08:53,527 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2025-03-17 06:08:53,531 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 274 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-17 06:08:53,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 764 Invalid, 1321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1306 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-17 06:08:53,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2025-03-17 06:08:53,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 171. [2025-03-17 06:08:53,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 152 states have (on average 1.4407894736842106) internal successors, (219), 152 states have internal predecessors, (219), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-17 06:08:53,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 251 transitions. [2025-03-17 06:08:53,573 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 251 transitions. Word has length 124 [2025-03-17 06:08:53,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:08:53,573 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 251 transitions. [2025-03-17 06:08:53,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-17 06:08:53,574 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 251 transitions. [2025-03-17 06:08:53,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-17 06:08:53,579 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:08:53,579 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:08:53,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 06:08:53,580 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:08:53,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:08:53,580 INFO L85 PathProgramCache]: Analyzing trace with hash -675396536, now seen corresponding path program 1 times [2025-03-17 06:08:53,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:08:53,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443546863] [2025-03-17 06:08:53,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:08:53,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:08:53,618 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-17 06:08:53,870 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-17 06:08:53,870 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:08:53,870 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:08:59,109 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2025-03-17 06:08:59,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:08:59,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443546863] [2025-03-17 06:08:59,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443546863] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:08:59,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132840312] [2025-03-17 06:08:59,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:08:59,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:08:59,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:08:59,112 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:08:59,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 06:08:59,232 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-17 06:08:59,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-17 06:08:59,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:08:59,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:08:59,398 INFO L256 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 128 conjuncts are in the unsatisfiable core [2025-03-17 06:08:59,413 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:08:59,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-17 06:09:01,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-03-17 06:09:02,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 27 [2025-03-17 06:09:03,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 37 [2025-03-17 06:09:04,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 47 [2025-03-17 06:09:05,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 47 [2025-03-17 06:09:05,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 47 [2025-03-17 06:09:06,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 47 [2025-03-17 06:09:07,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 47 [2025-03-17 06:09:08,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:08,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:08,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:08,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:08,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 117 [2025-03-17 06:09:08,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:08,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:08,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:08,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:08,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:08,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:08,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:08,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:08,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:08,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 128 [2025-03-17 06:09:09,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:09,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:09,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:09,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:09,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:09,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:09,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:09,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:09,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:09,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:09,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:09,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:09,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:09,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:09,589 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2025-03-17 06:09:09,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 20 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 164 treesize of output 114 [2025-03-17 06:09:11,111 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 06:09:11,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 6 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 39 case distinctions, treesize of input 297 treesize of output 461 [2025-03-17 06:09:25,531 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 160 proven. 250 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-03-17 06:09:25,532 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:09:53,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132840312] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:09:53,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 06:09:53,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 39] total 58 [2025-03-17 06:09:53,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7927562] [2025-03-17 06:09:53,035 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 06:09:53,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-03-17 06:09:53,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:09:53,038 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-03-17 06:09:53,039 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=553, Invalid=4138, Unknown=1, NotChecked=0, Total=4692 [2025-03-17 06:09:53,040 INFO L87 Difference]: Start difference. First operand 171 states and 251 transitions. Second operand has 58 states, 51 states have (on average 2.2745098039215685) internal successors, (116), 52 states have internal predecessors, (116), 13 states have call successors, (32), 9 states have call predecessors, (32), 11 states have return successors, (32), 10 states have call predecessors, (32), 13 states have call successors, (32)