./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-43.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-43.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 8e02e3162d4ac684b0ff9ed860eab65b0ec801c533748a64b9c6f0865c039d56 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 06:08:47,087 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 06:08:47,148 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 06:08:47,156 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 06:08:47,158 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 06:08:47,182 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 06:08:47,183 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 06:08:47,183 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 06:08:47,183 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 06:08:47,184 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 06:08:47,184 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 06:08:47,184 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 06:08:47,184 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 06:08:47,185 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 06:08:47,185 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 06:08:47,185 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 06:08:47,185 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 06:08:47,185 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 06:08:47,185 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 06:08:47,185 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 06:08:47,186 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 06:08:47,186 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 06:08:47,186 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 06:08:47,186 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 06:08:47,186 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 06:08:47,186 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 06:08:47,186 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 06:08:47,186 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 06:08:47,186 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 06:08:47,186 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 06:08:47,187 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 06:08:47,187 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 06:08:47,187 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:08:47,187 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 06:08:47,187 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 06:08:47,187 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 06:08:47,187 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 06:08:47,187 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 06:08:47,187 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 06:08:47,187 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 06:08:47,187 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 06:08:47,188 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 06:08:47,188 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 06:08:47,188 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 -> 8e02e3162d4ac684b0ff9ed860eab65b0ec801c533748a64b9c6f0865c039d56 [2025-03-17 06:08:47,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 06:08:47,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 06:08:47,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 06:08:47,447 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 06:08:47,447 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 06:08:47,448 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-43.i [2025-03-17 06:08:48,623 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04a991529/768b82001c244ad6b8ef482d9b9998c0/FLAG3f5b064da [2025-03-17 06:08:48,869 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 06:08:48,870 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-43.i [2025-03-17 06:08:48,876 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04a991529/768b82001c244ad6b8ef482d9b9998c0/FLAG3f5b064da [2025-03-17 06:08:48,887 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04a991529/768b82001c244ad6b8ef482d9b9998c0 [2025-03-17 06:08:48,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 06:08:48,892 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 06:08:48,893 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 06:08:48,893 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 06:08:48,896 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 06:08:48,897 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:08:48" (1/1) ... [2025-03-17 06:08:48,898 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cedd0f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:48, skipping insertion in model container [2025-03-17 06:08:48,898 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:08:48" (1/1) ... [2025-03-17 06:08:48,911 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 06:08:49,016 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-43.i[917,930] [2025-03-17 06:08:49,065 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:08:49,075 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 06:08:49,083 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-43.i[917,930] [2025-03-17 06:08:49,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:08:49,130 INFO L204 MainTranslator]: Completed translation [2025-03-17 06:08:49,131 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:49 WrapperNode [2025-03-17 06:08:49,131 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 06:08:49,132 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 06:08:49,132 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 06:08:49,132 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 06:08:49,136 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:49" (1/1) ... [2025-03-17 06:08:49,145 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:49" (1/1) ... [2025-03-17 06:08:49,175 INFO L138 Inliner]: procedures = 30, calls = 176, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 556 [2025-03-17 06:08:49,176 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 06:08:49,177 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 06:08:49,177 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 06:08:49,177 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 06:08:49,183 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:49" (1/1) ... [2025-03-17 06:08:49,183 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:49" (1/1) ... [2025-03-17 06:08:49,187 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:49" (1/1) ... [2025-03-17 06:08:49,198 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2025-03-17 06:08:49,198 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:49" (1/1) ... [2025-03-17 06:08:49,198 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:49" (1/1) ... [2025-03-17 06:08:49,209 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:49" (1/1) ... [2025-03-17 06:08:49,211 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:49" (1/1) ... [2025-03-17 06:08:49,213 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:49" (1/1) ... [2025-03-17 06:08:49,219 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:49" (1/1) ... [2025-03-17 06:08:49,226 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 06:08:49,227 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 06:08:49,227 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 06:08:49,227 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 06:08:49,227 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:49" (1/1) ... [2025-03-17 06:08:49,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:08:49,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:08:49,255 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 06:08:49,257 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 06:08:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 06:08:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2025-03-17 06:08:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2025-03-17 06:08:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2025-03-17 06:08:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-03-17 06:08:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2025-03-17 06:08:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-03-17 06:08:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 06:08:49,277 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 06:08:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-17 06:08:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 06:08:49,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 06:08:49,387 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 06:08:49,389 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 06:08:50,018 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L149: havoc property_#t~mem101#1;havoc property_#t~mem96#1;havoc property_#t~mem94#1;havoc property_#t~mem95#1;havoc property_#t~ite100#1;havoc property_#t~mem97#1;havoc property_#t~mem98#1;havoc property_#t~mem99#1;havoc property_#t~ite115#1;havoc property_#t~mem102#1;havoc property_#t~ite108#1;havoc property_#t~mem107#1;havoc property_#t~mem103#1;havoc property_#t~mem104#1;havoc property_#t~mem105#1;havoc property_#t~mem106#1;havoc property_#t~mem109#1;havoc property_#t~ite114#1;havoc property_#t~mem111#1;havoc property_#t~mem110#1;havoc property_#t~mem113#1;havoc property_#t~mem112#1;havoc property_#t~mem119#1;havoc property_#t~mem116#1;havoc property_#t~mem117#1;havoc property_#t~bitwise118#1;havoc property_#t~ite127#1;havoc property_#t~mem120#1;havoc property_#t~mem121#1;havoc property_#t~ite126#1;havoc property_#t~mem123#1;havoc property_#t~mem122#1;havoc property_#t~mem125#1;havoc property_#t~mem124#1;havoc property_#t~short128#1;havoc property_#t~mem132#1;havoc property_#t~mem129#1;havoc property_#t~mem130#1;havoc property_#t~bitwise131#1;havoc property_#t~ite137#1;havoc property_#t~mem136#1;havoc property_#t~mem135#1;havoc property_#t~mem133#1;havoc property_#t~mem134#1;havoc property_#t~short138#1;havoc property_#t~mem140#1;havoc property_#t~mem139#1;havoc property_#t~short141#1;havoc property_#t~mem143#1;havoc property_#t~mem142#1;havoc property_#t~short144#1;havoc property_#t~mem146#1;havoc property_#t~mem145#1;havoc property_#t~short147#1; [2025-03-17 06:08:50,064 INFO L? ?]: Removed 131 outVars from TransFormulas that were not future-live. [2025-03-17 06:08:50,064 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 06:08:50,085 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 06:08:50,087 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 06:08:50,087 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:08:50 BoogieIcfgContainer [2025-03-17 06:08:50,087 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 06:08:50,090 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 06:08:50,090 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 06:08:50,093 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 06:08:50,093 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:08:48" (1/3) ... [2025-03-17 06:08:50,094 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d583875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:08:50, skipping insertion in model container [2025-03-17 06:08:50,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:49" (2/3) ... [2025-03-17 06:08:50,094 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d583875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:08:50, skipping insertion in model container [2025-03-17 06:08:50,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:08:50" (3/3) ... [2025-03-17 06:08:50,095 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-43.i [2025-03-17 06:08:50,105 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 06:08:50,107 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-sp_file-43.i that has 2 procedures, 119 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-17 06:08:50,156 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 06:08:50,165 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;@6eee9d44, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 06:08:50,165 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 06:08:50,172 INFO L276 IsEmpty]: Start isEmpty. Operand has 119 states, 96 states have (on average 1.4479166666666667) internal successors, (139), 97 states have internal predecessors, (139), 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 06:08:50,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2025-03-17 06:08:50,182 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:08:50,182 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, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:08:50,183 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:08:50,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:08:50,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1259976275, now seen corresponding path program 1 times [2025-03-17 06:08:50,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:08:50,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291809230] [2025-03-17 06:08:50,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:08:50,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:08:50,367 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-17 06:08:50,434 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-17 06:08:50,435 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:08:50,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:08:50,621 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 06:08:50,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:08:50,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291809230] [2025-03-17 06:08:50,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291809230] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:08:50,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763825913] [2025-03-17 06:08:50,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:08:50,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:08:50,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:08:50,625 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 06:08:50,627 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 06:08:50,798 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-17 06:08:50,904 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-17 06:08:50,904 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:08:50,904 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:08:50,910 INFO L256 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 06:08:50,917 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:08:50,944 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 06:08:50,944 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:08:50,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763825913] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:08:50,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:08:50,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 06:08:50,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147363314] [2025-03-17 06:08:50,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:08:50,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 06:08:50,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:08:50,961 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 06:08:50,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 06:08:50,964 INFO L87 Difference]: Start difference. First operand has 119 states, 96 states have (on average 1.4479166666666667) internal successors, (139), 97 states have internal predecessors, (139), 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 34.0) internal successors, (68), 2 states have internal predecessors, (68), 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 06:08:50,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:08:50,993 INFO L93 Difference]: Finished difference Result 235 states and 376 transitions. [2025-03-17 06:08:50,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 06:08:50,995 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 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 163 [2025-03-17 06:08:50,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:08:51,002 INFO L225 Difference]: With dead ends: 235 [2025-03-17 06:08:51,003 INFO L226 Difference]: Without dead ends: 117 [2025-03-17 06:08:51,008 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 164 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 06:08:51,012 INFO L435 NwaCegarLoop]: 171 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 06:08:51,014 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 171 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 06:08:51,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2025-03-17 06:08:51,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2025-03-17 06:08:51,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 95 states have (on average 1.4210526315789473) internal successors, (135), 95 states have internal predecessors, (135), 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 06:08:51,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 175 transitions. [2025-03-17 06:08:51,047 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 175 transitions. Word has length 163 [2025-03-17 06:08:51,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:08:51,047 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 175 transitions. [2025-03-17 06:08:51,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 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 06:08:51,048 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 175 transitions. [2025-03-17 06:08:51,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2025-03-17 06:08:51,050 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:08:51,051 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, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:08:51,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 06:08:51,252 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 06:08:51,252 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:08:51,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:08:51,254 INFO L85 PathProgramCache]: Analyzing trace with hash 894768803, now seen corresponding path program 1 times [2025-03-17 06:08:51,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:08:51,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950469916] [2025-03-17 06:08:51,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:08:51,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:08:51,323 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-17 06:08:51,395 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-17 06:08:51,397 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:08:51,397 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:08:51,817 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 36 proven. 21 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2025-03-17 06:08:51,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:08:51,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950469916] [2025-03-17 06:08:51,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950469916] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:08:51,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850597450] [2025-03-17 06:08:51,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:08:51,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:08:51,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:08:51,822 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 06:08:51,823 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 06:08:51,969 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-17 06:08:52,065 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-17 06:08:52,065 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:08:52,065 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:08:52,069 INFO L256 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 06:08:52,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:08:52,114 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 06:08:52,115 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:08:52,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850597450] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:08:52,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:08:52,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2025-03-17 06:08:52,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804165253] [2025-03-17 06:08:52,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:08:52,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 06:08:52,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:08:52,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 06:08:52,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-17 06:08:52,119 INFO L87 Difference]: Start difference. First operand 117 states and 175 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 06:08:52,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:08:52,165 INFO L93 Difference]: Finished difference Result 236 states and 353 transitions. [2025-03-17 06:08:52,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 06:08:52,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 163 [2025-03-17 06:08:52,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:08:52,167 INFO L225 Difference]: With dead ends: 236 [2025-03-17 06:08:52,167 INFO L226 Difference]: Without dead ends: 120 [2025-03-17 06:08:52,168 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-17 06:08:52,168 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 1 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 06:08:52,169 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 493 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 06:08:52,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2025-03-17 06:08:52,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2025-03-17 06:08:52,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 97 states have (on average 1.4123711340206186) internal successors, (137), 97 states have internal predecessors, (137), 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 06:08:52,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 177 transitions. [2025-03-17 06:08:52,178 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 177 transitions. Word has length 163 [2025-03-17 06:08:52,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:08:52,180 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 177 transitions. [2025-03-17 06:08:52,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 06:08:52,181 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 177 transitions. [2025-03-17 06:08:52,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2025-03-17 06:08:52,182 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:08:52,182 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, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:08:52,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 06:08:52,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2025-03-17 06:08:52,383 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:08:52,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:08:52,384 INFO L85 PathProgramCache]: Analyzing trace with hash -912685660, now seen corresponding path program 1 times [2025-03-17 06:08:52,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:08:52,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331777498] [2025-03-17 06:08:52,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:08:52,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:08:52,444 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-17 06:08:52,469 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-17 06:08:52,469 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:08:52,469 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:08:52,738 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 36 proven. 21 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2025-03-17 06:08:52,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:08:52,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331777498] [2025-03-17 06:08:52,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331777498] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:08:52,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694566038] [2025-03-17 06:08:52,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:08:52,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:08:52,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:08:52,742 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:08:52,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 06:08:52,917 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-17 06:08:53,009 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-17 06:08:53,009 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:08:53,009 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:08:53,014 INFO L256 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 06:08:53,020 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:08:53,054 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 06:08:53,054 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:08:53,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694566038] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:08:53,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:08:53,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2025-03-17 06:08:53,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619249724] [2025-03-17 06:08:53,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:08:53,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 06:08:53,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:08:53,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 06:08:53,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-17 06:08:53,057 INFO L87 Difference]: Start difference. First operand 119 states and 177 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 06:08:53,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:08:53,097 INFO L93 Difference]: Finished difference Result 240 states and 357 transitions. [2025-03-17 06:08:53,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 06:08:53,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 163 [2025-03-17 06:08:53,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:08:53,101 INFO L225 Difference]: With dead ends: 240 [2025-03-17 06:08:53,102 INFO L226 Difference]: Without dead ends: 122 [2025-03-17 06:08:53,103 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-17 06:08:53,105 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 1 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 06:08:53,105 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 494 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 06:08:53,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2025-03-17 06:08:53,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2025-03-17 06:08:53,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 99 states have (on average 1.404040404040404) internal successors, (139), 99 states have internal predecessors, (139), 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 06:08:53,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 179 transitions. [2025-03-17 06:08:53,117 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 179 transitions. Word has length 163 [2025-03-17 06:08:53,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:08:53,118 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 179 transitions. [2025-03-17 06:08:53,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 06:08:53,118 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 179 transitions. [2025-03-17 06:08:53,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2025-03-17 06:08:53,120 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:08:53,120 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, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:08:53,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 06:08:53,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:08:53,324 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:08:53,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:08:53,325 INFO L85 PathProgramCache]: Analyzing trace with hash -25181979, now seen corresponding path program 1 times [2025-03-17 06:08:53,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:08:53,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337136093] [2025-03-17 06:08:53,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:08:53,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:08:53,361 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-17 06:08:53,379 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-17 06:08:53,380 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:08:53,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:08:53,592 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 36 proven. 21 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2025-03-17 06:08:53,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:08:53,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337136093] [2025-03-17 06:08:53,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337136093] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:08:53,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244743468] [2025-03-17 06:08:53,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:08:53,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:08:53,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:08:53,598 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:08:53,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 06:08:53,761 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-17 06:08:53,835 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-17 06:08:53,835 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:08:53,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:08:53,840 INFO L256 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 06:08:53,843 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:08:53,864 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 06:08:53,864 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:08:53,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244743468] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:08:53,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:08:53,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2025-03-17 06:08:53,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664616232] [2025-03-17 06:08:53,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:08:53,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 06:08:53,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:08:53,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 06:08:53,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-17 06:08:53,866 INFO L87 Difference]: Start difference. First operand 121 states and 179 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 06:08:53,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:08:53,898 INFO L93 Difference]: Finished difference Result 244 states and 361 transitions. [2025-03-17 06:08:53,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 06:08:53,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 163 [2025-03-17 06:08:53,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:08:53,901 INFO L225 Difference]: With dead ends: 244 [2025-03-17 06:08:53,901 INFO L226 Difference]: Without dead ends: 124 [2025-03-17 06:08:53,903 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-17 06:08:53,903 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 1 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 06:08:53,903 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 496 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 06:08:53,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2025-03-17 06:08:53,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2025-03-17 06:08:53,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 101 states have (on average 1.396039603960396) internal successors, (141), 101 states have internal predecessors, (141), 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 06:08:53,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 181 transitions. [2025-03-17 06:08:53,915 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 181 transitions. Word has length 163 [2025-03-17 06:08:53,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:08:53,916 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 181 transitions. [2025-03-17 06:08:53,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 06:08:53,916 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 181 transitions. [2025-03-17 06:08:53,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2025-03-17 06:08:53,920 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:08:53,920 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, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:08:53,930 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-17 06:08:54,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:08:54,121 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:08:54,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:08:54,122 INFO L85 PathProgramCache]: Analyzing trace with hash -24258458, now seen corresponding path program 1 times [2025-03-17 06:08:54,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:08:54,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341354468] [2025-03-17 06:08:54,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:08:54,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:08:54,156 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-17 06:08:54,187 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-17 06:08:54,187 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:08:54,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:08:54,352 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 36 proven. 21 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2025-03-17 06:08:54,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:08:54,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341354468] [2025-03-17 06:08:54,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341354468] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:08:54,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828078918] [2025-03-17 06:08:54,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:08:54,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:08:54,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:08:54,356 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:08:54,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 06:08:54,522 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-17 06:08:54,609 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-17 06:08:54,609 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:08:54,609 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:08:54,613 INFO L256 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 06:08:54,616 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:08:54,660 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 06:08:54,661 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:08:54,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828078918] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:08:54,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:08:54,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2025-03-17 06:08:54,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687628403] [2025-03-17 06:08:54,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:08:54,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:08:54,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:08:54,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:08:54,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-17 06:08:54,663 INFO L87 Difference]: Start difference. First operand 123 states and 181 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 06:08:54,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:08:54,703 INFO L93 Difference]: Finished difference Result 248 states and 365 transitions. [2025-03-17 06:08:54,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:08:54,706 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 163 [2025-03-17 06:08:54,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:08:54,707 INFO L225 Difference]: With dead ends: 248 [2025-03-17 06:08:54,707 INFO L226 Difference]: Without dead ends: 126 [2025-03-17 06:08:54,708 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-17 06:08:54,708 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 0 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 06:08:54,708 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 657 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 06:08:54,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2025-03-17 06:08:54,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2025-03-17 06:08:54,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 104 states have (on average 1.3846153846153846) internal successors, (144), 104 states have internal predecessors, (144), 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 06:08:54,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 184 transitions. [2025-03-17 06:08:54,719 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 184 transitions. Word has length 163 [2025-03-17 06:08:54,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:08:54,719 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 184 transitions. [2025-03-17 06:08:54,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 06:08:54,720 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 184 transitions. [2025-03-17 06:08:54,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2025-03-17 06:08:54,720 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:08:54,721 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, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:08:54,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-17 06:08:54,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:08:54,926 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:08:54,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:08:54,927 INFO L85 PathProgramCache]: Analyzing trace with hash 486275719, now seen corresponding path program 1 times [2025-03-17 06:08:54,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:08:54,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93695837] [2025-03-17 06:08:54,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:08:54,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:08:54,964 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-17 06:08:55,165 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-17 06:08:55,165 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:08:55,165 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:08:56,813 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2025-03-17 06:08:56,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:08:56,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93695837] [2025-03-17 06:08:56,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93695837] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:08:56,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767047285] [2025-03-17 06:08:56,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:08:56,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:08:56,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:08:56,818 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:08:56,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 06:08:56,997 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-17 06:08:57,066 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-17 06:08:57,066 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:08:57,066 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:08:57,070 INFO L256 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-03-17 06:08:57,076 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:08:59,391 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 06:08:59,678 INFO L349 Elim1Store]: treesize reduction 25, result has 41.9 percent of original size [2025-03-17 06:08:59,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 45 [2025-03-17 06:08:59,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:59,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:59,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:59,707 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2025-03-17 06:08:59,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 29 [2025-03-17 06:08:59,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:59,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:59,769 INFO L349 Elim1Store]: treesize reduction 46, result has 37.0 percent of original size [2025-03-17 06:08:59,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 46 [2025-03-17 06:09:00,354 INFO L349 Elim1Store]: treesize reduction 42, result has 45.5 percent of original size [2025-03-17 06:09:00,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 146 treesize of output 143 [2025-03-17 06:09:00,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:00,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:00,847 INFO L349 Elim1Store]: treesize reduction 104, result has 35.8 percent of original size [2025-03-17 06:09:00,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 50 treesize of output 95 [2025-03-17 06:09:00,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:00,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:00,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:00,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:00,952 INFO L349 Elim1Store]: treesize reduction 35, result has 2.8 percent of original size [2025-03-17 06:09:00,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 30 [2025-03-17 06:09:00,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:00,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:00,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:00,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:00,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:00,988 INFO L349 Elim1Store]: treesize reduction 86, result has 1.1 percent of original size [2025-03-17 06:09:00,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 32 [2025-03-17 06:09:00,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:01,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:01,008 INFO L349 Elim1Store]: treesize reduction 161, result has 0.6 percent of original size [2025-03-17 06:09:01,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 54 treesize of output 42 [2025-03-17 06:09:01,055 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2025-03-17 06:09:01,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 12 [2025-03-17 06:09:01,078 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 06:09:01,079 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:09:01,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767047285] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:09:01,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 06:09:01,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 20 [2025-03-17 06:09:01,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987803715] [2025-03-17 06:09:01,296 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 06:09:01,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-17 06:09:01,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:09:01,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-17 06:09:01,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=480, Unknown=4, NotChecked=0, Total=552 [2025-03-17 06:09:01,297 INFO L87 Difference]: Start difference. First operand 126 states and 184 transitions. Second operand has 20 states, 18 states have (on average 6.611111111111111) internal successors, (119), 18 states have internal predecessors, (119), 7 states have call successors, (40), 3 states have call predecessors, (40), 4 states have return successors, (40), 6 states have call predecessors, (40), 7 states have call successors, (40) [2025-03-17 06:09:03,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:09:03,979 INFO L93 Difference]: Finished difference Result 343 states and 498 transitions. [2025-03-17 06:09:03,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-17 06:09:03,980 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 6.611111111111111) internal successors, (119), 18 states have internal predecessors, (119), 7 states have call successors, (40), 3 states have call predecessors, (40), 4 states have return successors, (40), 6 states have call predecessors, (40), 7 states have call successors, (40) Word has length 163 [2025-03-17 06:09:03,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:09:03,981 INFO L225 Difference]: With dead ends: 343 [2025-03-17 06:09:03,981 INFO L226 Difference]: Without dead ends: 218 [2025-03-17 06:09:03,982 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=443, Invalid=1623, Unknown=4, NotChecked=0, Total=2070 [2025-03-17 06:09:03,982 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 484 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 1376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-17 06:09:03,982 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 925 Invalid, 1376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-17 06:09:03,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2025-03-17 06:09:04,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 205. [2025-03-17 06:09:04,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 162 states have (on average 1.3518518518518519) internal successors, (219), 163 states have internal predecessors, (219), 38 states have call successors, (38), 4 states have call predecessors, (38), 4 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2025-03-17 06:09:04,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 295 transitions. [2025-03-17 06:09:04,006 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 295 transitions. Word has length 163 [2025-03-17 06:09:04,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:09:04,006 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 295 transitions. [2025-03-17 06:09:04,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 6.611111111111111) internal successors, (119), 18 states have internal predecessors, (119), 7 states have call successors, (40), 3 states have call predecessors, (40), 4 states have return successors, (40), 6 states have call predecessors, (40), 7 states have call successors, (40) [2025-03-17 06:09:04,007 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 295 transitions. [2025-03-17 06:09:04,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2025-03-17 06:09:04,008 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:09:04,008 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, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:09:04,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-17 06:09:04,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:09:04,212 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:09:04,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:09:04,212 INFO L85 PathProgramCache]: Analyzing trace with hash -318972682, now seen corresponding path program 1 times [2025-03-17 06:09:04,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:09:04,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006180001] [2025-03-17 06:09:04,213 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:09:04,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:09:04,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-03-17 06:09:04,413 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-03-17 06:09:04,414 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:09:04,414 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:09:05,702 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2025-03-17 06:09:05,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:09:05,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006180001] [2025-03-17 06:09:05,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006180001] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:09:05,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681983910] [2025-03-17 06:09:05,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:09:05,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:09:05,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:09:05,704 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:09:05,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 06:09:05,865 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-03-17 06:09:05,921 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-03-17 06:09:05,921 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:09:05,921 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:09:05,924 INFO L256 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-03-17 06:09:05,929 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:09:08,301 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 06:09:08,624 INFO L349 Elim1Store]: treesize reduction 25, result has 41.9 percent of original size [2025-03-17 06:09:08,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 45 [2025-03-17 06:09:08,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:08,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:08,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:08,653 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2025-03-17 06:09:08,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 29 [2025-03-17 06:09:08,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:08,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:08,692 INFO L349 Elim1Store]: treesize reduction 46, result has 37.0 percent of original size [2025-03-17 06:09:08,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 46 [2025-03-17 06:09:09,017 INFO L349 Elim1Store]: treesize reduction 42, result has 45.5 percent of original size [2025-03-17 06:09:09,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 146 treesize of output 143 [2025-03-17 06:09:09,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:09,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:09,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:09,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:09,395 INFO L349 Elim1Store]: treesize reduction 25, result has 30.6 percent of original size [2025-03-17 06:09:09,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 41 [2025-03-17 06:09:09,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:09,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:09,439 INFO L349 Elim1Store]: treesize reduction 161, result has 0.6 percent of original size [2025-03-17 06:09:09,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 54 treesize of output 42 [2025-03-17 06:09:09,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:09,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:09,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:09,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:09,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:09,463 INFO L349 Elim1Store]: treesize reduction 86, result has 1.1 percent of original size [2025-03-17 06:09:09,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 32 [2025-03-17 06:09:09,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:09,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:09,491 INFO L349 Elim1Store]: treesize reduction 161, result has 0.6 percent of original size [2025-03-17 06:09:09,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 50 treesize of output 38 [2025-03-17 06:09:09,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:09,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:09,567 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2025-03-17 06:09:09,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 23 [2025-03-17 06:09:09,604 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2025-03-17 06:09:09,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 12 [2025-03-17 06:09:09,624 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 06:09:09,624 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:09:09,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681983910] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:09:09,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 06:09:09,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2025-03-17 06:09:09,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956202133] [2025-03-17 06:09:09,924 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 06:09:09,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-17 06:09:09,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:09:09,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-17 06:09:09,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=615, Unknown=3, NotChecked=0, Total=702 [2025-03-17 06:09:09,926 INFO L87 Difference]: Start difference. First operand 205 states and 295 transitions. Second operand has 22 states, 20 states have (on average 6.05) internal successors, (121), 20 states have internal predecessors, (121), 7 states have call successors, (40), 3 states have call predecessors, (40), 4 states have return successors, (40), 6 states have call predecessors, (40), 7 states have call successors, (40) [2025-03-17 06:09:12,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:09:12,801 INFO L93 Difference]: Finished difference Result 361 states and 519 transitions. [2025-03-17 06:09:12,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-17 06:09:12,802 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 6.05) internal successors, (121), 20 states have internal predecessors, (121), 7 states have call successors, (40), 3 states have call predecessors, (40), 4 states have return successors, (40), 6 states have call predecessors, (40), 7 states have call successors, (40) Word has length 164 [2025-03-17 06:09:12,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:09:12,803 INFO L225 Difference]: With dead ends: 361 [2025-03-17 06:09:12,804 INFO L226 Difference]: Without dead ends: 221 [2025-03-17 06:09:12,804 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=485, Invalid=1768, Unknown=3, NotChecked=0, Total=2256 [2025-03-17 06:09:12,805 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 705 mSDsluCounter, 924 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 1633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-17 06:09:12,805 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 1014 Invalid, 1633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 1294 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-17 06:09:12,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2025-03-17 06:09:12,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 194. [2025-03-17 06:09:12,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 151 states have (on average 1.3311258278145695) internal successors, (201), 152 states have internal predecessors, (201), 38 states have call successors, (38), 4 states have call predecessors, (38), 4 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2025-03-17 06:09:12,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 277 transitions. [2025-03-17 06:09:12,825 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 277 transitions. Word has length 164 [2025-03-17 06:09:12,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:09:12,825 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 277 transitions. [2025-03-17 06:09:12,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 6.05) internal successors, (121), 20 states have internal predecessors, (121), 7 states have call successors, (40), 3 states have call predecessors, (40), 4 states have return successors, (40), 6 states have call predecessors, (40), 7 states have call successors, (40) [2025-03-17 06:09:12,826 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 277 transitions. [2025-03-17 06:09:12,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2025-03-17 06:09:12,827 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:09:12,827 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, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:09:12,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-17 06:09:13,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:09:13,028 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:09:13,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:09:13,028 INFO L85 PathProgramCache]: Analyzing trace with hash -710552875, now seen corresponding path program 1 times [2025-03-17 06:09:13,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:09:13,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340771174] [2025-03-17 06:09:13,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:09:13,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:09:13,059 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-03-17 06:09:13,154 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-03-17 06:09:13,155 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:09:13,155 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:09:13,501 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 06:09:13,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:09:13,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340771174] [2025-03-17 06:09:13,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340771174] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:09:13,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:09:13,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 06:09:13,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157100966] [2025-03-17 06:09:13,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:09:13,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 06:09:13,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:09:13,503 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 06:09:13,503 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-17 06:09:13,503 INFO L87 Difference]: Start difference. First operand 194 states and 277 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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 06:09:13,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:09:13,795 INFO L93 Difference]: Finished difference Result 367 states and 521 transitions. [2025-03-17 06:09:13,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:09:13,795 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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 164 [2025-03-17 06:09:13,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:09:13,798 INFO L225 Difference]: With dead ends: 367 [2025-03-17 06:09:13,798 INFO L226 Difference]: Without dead ends: 238 [2025-03-17 06:09:13,799 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:09:13,799 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 255 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 06:09:13,799 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 458 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 06:09:13,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2025-03-17 06:09:13,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 198. [2025-03-17 06:09:13,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 155 states have (on average 1.335483870967742) internal successors, (207), 156 states have internal predecessors, (207), 38 states have call successors, (38), 4 states have call predecessors, (38), 4 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2025-03-17 06:09:13,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 283 transitions. [2025-03-17 06:09:13,825 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 283 transitions. Word has length 164 [2025-03-17 06:09:13,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:09:13,825 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 283 transitions. [2025-03-17 06:09:13,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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 06:09:13,826 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 283 transitions. [2025-03-17 06:09:13,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2025-03-17 06:09:13,827 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:09:13,827 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, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:09:13,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 06:09:13,827 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:09:13,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:09:13,827 INFO L85 PathProgramCache]: Analyzing trace with hash 100821849, now seen corresponding path program 1 times [2025-03-17 06:09:13,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:09:13,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978897458] [2025-03-17 06:09:13,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:09:13,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:09:13,863 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-03-17 06:09:13,920 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-03-17 06:09:13,920 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:09:13,920 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:09:14,220 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 06:09:14,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:09:14,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978897458] [2025-03-17 06:09:14,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978897458] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:09:14,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:09:14,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 06:09:14,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264455539] [2025-03-17 06:09:14,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:09:14,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 06:09:14,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:09:14,223 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 06:09:14,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-17 06:09:14,223 INFO L87 Difference]: Start difference. First operand 198 states and 283 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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 06:09:14,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:09:14,731 INFO L93 Difference]: Finished difference Result 371 states and 526 transitions. [2025-03-17 06:09:14,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:09:14,731 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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 164 [2025-03-17 06:09:14,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:09:14,733 INFO L225 Difference]: With dead ends: 371 [2025-03-17 06:09:14,733 INFO L226 Difference]: Without dead ends: 238 [2025-03-17 06:09:14,734 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:09:14,734 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 156 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 06:09:14,734 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 545 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 06:09:14,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2025-03-17 06:09:14,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 199. [2025-03-17 06:09:14,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 156 states have (on average 1.3333333333333333) internal successors, (208), 157 states have internal predecessors, (208), 38 states have call successors, (38), 4 states have call predecessors, (38), 4 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2025-03-17 06:09:14,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 284 transitions. [2025-03-17 06:09:14,793 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 284 transitions. Word has length 164 [2025-03-17 06:09:14,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:09:14,793 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 284 transitions. [2025-03-17 06:09:14,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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 06:09:14,794 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 284 transitions. [2025-03-17 06:09:14,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2025-03-17 06:09:14,794 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:09:14,795 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, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:09:14,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 06:09:14,795 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:09:14,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:09:14,795 INFO L85 PathProgramCache]: Analyzing trace with hash -409712328, now seen corresponding path program 1 times [2025-03-17 06:09:14,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:09:14,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842383830] [2025-03-17 06:09:14,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:09:14,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:09:14,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-03-17 06:09:14,947 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-03-17 06:09:14,947 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:09:14,947 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:09:16,150 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2025-03-17 06:09:16,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:09:16,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842383830] [2025-03-17 06:09:16,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842383830] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:09:16,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173008163] [2025-03-17 06:09:16,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:09:16,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:09:16,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:09:16,153 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:09:16,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-17 06:09:16,354 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-03-17 06:09:16,415 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-03-17 06:09:16,415 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:09:16,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:09:16,418 INFO L256 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-03-17 06:09:16,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:09:16,903 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 06:09:17,158 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 23 treesize of output 11 [2025-03-17 06:09:17,341 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 23 treesize of output 11 [2025-03-17 06:09:17,512 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 23 treesize of output 11 [2025-03-17 06:09:17,667 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 23 treesize of output 11 [2025-03-17 06:09:17,818 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 23 treesize of output 11 [2025-03-17 06:09:17,987 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 23 treesize of output 11 [2025-03-17 06:09:18,146 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 23 treesize of output 11 [2025-03-17 06:09:18,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:18,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:18,427 INFO L349 Elim1Store]: treesize reduction 245, result has 25.1 percent of original size [2025-03-17 06:09:18,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 70 treesize of output 145 [2025-03-17 06:09:20,238 INFO L349 Elim1Store]: treesize reduction 32, result has 52.2 percent of original size [2025-03-17 06:09:20,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 175 treesize of output 187 [2025-03-17 06:09:20,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:20,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2025-03-17 06:09:20,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:20,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2025-03-17 06:09:20,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:20,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:20,698 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-03-17 06:09:20,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 32 [2025-03-17 06:09:20,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:20,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:20,716 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-03-17 06:09:20,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 32 [2025-03-17 06:09:20,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:20,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2025-03-17 06:09:20,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:20,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2025-03-17 06:09:20,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:20,814 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2025-03-17 06:09:20,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 29 [2025-03-17 06:09:20,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:20,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:20,836 INFO L349 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2025-03-17 06:09:20,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 46 treesize of output 39 [2025-03-17 06:09:20,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:09:20,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22