./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-53.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-53.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 760c1d743f5a1ad25ea52dedd60162abae8ccc16a1aae8053ec51960a678eda5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 06:10:03,685 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 06:10:03,769 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 06:10:03,774 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 06:10:03,778 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 06:10:03,805 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 06:10:03,806 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 06:10:03,806 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 06:10:03,807 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 06:10:03,807 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 06:10:03,807 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 06:10:03,808 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 06:10:03,808 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 06:10:03,808 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 06:10:03,808 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 06:10:03,808 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 06:10:03,808 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 06:10:03,809 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 06:10:03,809 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 06:10:03,809 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 06:10:03,809 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 06:10:03,809 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 06:10:03,809 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 06:10:03,809 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 06:10:03,809 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 06:10:03,809 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 06:10:03,809 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 06:10:03,809 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 06:10:03,810 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 06:10:03,810 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 06:10:03,810 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 06:10:03,810 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 06:10:03,810 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:10:03,810 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 06:10:03,811 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 06:10:03,811 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 06:10:03,811 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 06:10:03,811 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 06:10:03,811 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 06:10:03,811 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 06:10:03,811 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 06:10:03,811 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 06:10:03,811 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 06:10:03,811 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 -> 760c1d743f5a1ad25ea52dedd60162abae8ccc16a1aae8053ec51960a678eda5 [2025-03-17 06:10:04,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 06:10:04,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 06:10:04,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 06:10:04,163 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 06:10:04,164 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 06:10:04,165 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-53.i [2025-03-17 06:10:05,578 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63792c482/eb0bf46047d74bfe9fc469484147c4c4/FLAG9b17091d9 [2025-03-17 06:10:05,854 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 06:10:05,854 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-53.i [2025-03-17 06:10:05,862 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63792c482/eb0bf46047d74bfe9fc469484147c4c4/FLAG9b17091d9 [2025-03-17 06:10:06,142 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63792c482/eb0bf46047d74bfe9fc469484147c4c4 [2025-03-17 06:10:06,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 06:10:06,148 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 06:10:06,149 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 06:10:06,149 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 06:10:06,152 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 06:10:06,153 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:10:06" (1/1) ... [2025-03-17 06:10:06,154 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51d82bf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:10:06, skipping insertion in model container [2025-03-17 06:10:06,154 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:10:06" (1/1) ... [2025-03-17 06:10:06,173 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 06:10:06,316 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-53.i[917,930] [2025-03-17 06:10:06,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:10:06,387 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 06:10:06,395 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-53.i[917,930] [2025-03-17 06:10:06,433 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:10:06,453 INFO L204 MainTranslator]: Completed translation [2025-03-17 06:10:06,454 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:10:06 WrapperNode [2025-03-17 06:10:06,454 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 06:10:06,459 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 06:10:06,459 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 06:10:06,459 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 06:10:06,463 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:10:06" (1/1) ... [2025-03-17 06:10:06,473 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:10:06" (1/1) ... [2025-03-17 06:10:06,501 INFO L138 Inliner]: procedures = 30, calls = 163, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 499 [2025-03-17 06:10:06,501 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 06:10:06,502 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 06:10:06,502 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 06:10:06,502 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 06:10:06,508 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:10:06" (1/1) ... [2025-03-17 06:10:06,509 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:10:06" (1/1) ... [2025-03-17 06:10:06,518 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:10:06" (1/1) ... [2025-03-17 06:10:06,528 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2025-03-17 06:10:06,533 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:10:06" (1/1) ... [2025-03-17 06:10:06,534 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:10:06" (1/1) ... [2025-03-17 06:10:06,554 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:10:06" (1/1) ... [2025-03-17 06:10:06,555 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:10:06" (1/1) ... [2025-03-17 06:10:06,560 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:10:06" (1/1) ... [2025-03-17 06:10:06,565 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:10:06" (1/1) ... [2025-03-17 06:10:06,568 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 06:10:06,572 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 06:10:06,572 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 06:10:06,572 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 06:10:06,573 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:10:06" (1/1) ... [2025-03-17 06:10:06,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:10:06,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:10:06,625 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 06:10:06,633 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 06:10:06,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 06:10:06,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2025-03-17 06:10:06,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2025-03-17 06:10:06,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2025-03-17 06:10:06,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-03-17 06:10:06,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2025-03-17 06:10:06,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-03-17 06:10:06,651 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 06:10:06,651 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 06:10:06,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-17 06:10:06,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 06:10:06,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 06:10:06,802 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 06:10:06,804 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 06:10:07,393 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L134: havoc property_#t~mem86#1;havoc property_#t~mem85#1;havoc property_#t~mem84#1;havoc property_#t~mem82#1;havoc property_#t~mem83#1;havoc property_#t~mem88#1;havoc property_#t~mem87#1;havoc property_#t~short89#1;havoc property_#t~mem90#1;havoc property_#t~mem91#1;havoc property_#t~ite94#1;havoc property_#t~mem92#1;havoc property_#t~mem93#1;havoc property_#t~mem95#1;havoc property_#t~mem96#1;havoc property_#t~ite99#1;havoc property_#t~mem97#1;havoc property_#t~mem98#1;havoc property_#t~ite116#1;havoc property_#t~mem100#1;havoc property_#t~mem101#1;havoc property_#t~ite113#1;havoc property_#t~mem102#1;havoc property_#t~ite112#1;havoc property_#t~mem103#1;havoc property_#t~mem104#1;havoc property_#t~ite111#1;havoc property_#t~mem108#1;havoc property_#t~mem105#1;havoc property_#t~mem106#1;havoc property_#t~short107#1;havoc property_#t~mem110#1;havoc property_#t~mem109#1;havoc property_#t~mem115#1;havoc property_#t~mem114#1;havoc property_#t~short117#1;havoc property_#t~mem120#1;havoc property_#t~mem118#1;havoc property_#t~mem119#1;havoc property_#t~ite126#1;havoc property_#t~mem125#1;havoc property_#t~mem121#1;havoc property_#t~ite124#1;havoc property_#t~mem122#1;havoc property_#t~mem123#1;havoc property_#t~short127#1;havoc property_#t~mem128#1;havoc property_#t~mem129#1;havoc property_#t~ite136#1;havoc property_#t~mem131#1;havoc property_#t~mem130#1;havoc property_#t~mem135#1;havoc property_#t~mem132#1;havoc property_#t~mem133#1;havoc property_#t~short134#1;havoc property_#t~short137#1; [2025-03-17 06:10:07,464 INFO L? ?]: Removed 115 outVars from TransFormulas that were not future-live. [2025-03-17 06:10:07,464 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 06:10:07,484 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 06:10:07,487 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 06:10:07,487 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:10:07 BoogieIcfgContainer [2025-03-17 06:10:07,487 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 06:10:07,490 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 06:10:07,490 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 06:10:07,494 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 06:10:07,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:10:06" (1/3) ... [2025-03-17 06:10:07,498 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5282aaf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:10:07, skipping insertion in model container [2025-03-17 06:10:07,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:10:06" (2/3) ... [2025-03-17 06:10:07,498 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5282aaf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:10:07, skipping insertion in model container [2025-03-17 06:10:07,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:10:07" (3/3) ... [2025-03-17 06:10:07,499 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-53.i [2025-03-17 06:10:07,517 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 06:10:07,518 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-sp_file-53.i that has 2 procedures, 106 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-17 06:10:07,561 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 06:10:07,578 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;@66e2e440, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 06:10:07,579 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 06:10:07,584 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 85 states have (on average 1.423529411764706) internal successors, (121), 86 states have internal predecessors, (121), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-17 06:10:07,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2025-03-17 06:10:07,595 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:10:07,596 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:10:07,597 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:10:07,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:10:07,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1010560767, now seen corresponding path program 1 times [2025-03-17 06:10:07,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:10:07,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108787963] [2025-03-17 06:10:07,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:10:07,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:10:07,764 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-03-17 06:10:07,819 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-03-17 06:10:07,820 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:10:07,820 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:10:07,950 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2025-03-17 06:10:07,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:10:07,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108787963] [2025-03-17 06:10:07,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108787963] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:10:07,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203556495] [2025-03-17 06:10:07,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:10:07,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:10:07,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:10:07,954 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 06:10:07,962 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 06:10:08,110 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-03-17 06:10:08,192 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-03-17 06:10:08,192 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:10:08,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:10:08,196 INFO L256 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 06:10:08,205 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:10:08,225 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2025-03-17 06:10:08,225 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:10:08,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203556495] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:10:08,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:10:08,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 06:10:08,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909034009] [2025-03-17 06:10:08,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:10:08,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 06:10:08,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:10:08,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 06:10:08,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 06:10:08,254 INFO L87 Difference]: Start difference. First operand has 106 states, 85 states have (on average 1.423529411764706) internal successors, (121), 86 states have internal predecessors, (121), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-17 06:10:08,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:10:08,276 INFO L93 Difference]: Finished difference Result 209 states and 330 transitions. [2025-03-17 06:10:08,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 06:10:08,278 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 136 [2025-03-17 06:10:08,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:10:08,296 INFO L225 Difference]: With dead ends: 209 [2025-03-17 06:10:08,296 INFO L226 Difference]: Without dead ends: 104 [2025-03-17 06:10:08,299 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 137 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 06:10:08,301 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 06:10:08,303 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 06:10:08,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2025-03-17 06:10:08,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2025-03-17 06:10:08,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 84 states have (on average 1.369047619047619) internal successors, (115), 84 states have internal predecessors, (115), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-17 06:10:08,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 151 transitions. [2025-03-17 06:10:08,337 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 151 transitions. Word has length 136 [2025-03-17 06:10:08,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:10:08,337 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 151 transitions. [2025-03-17 06:10:08,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-17 06:10:08,338 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 151 transitions. [2025-03-17 06:10:08,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2025-03-17 06:10:08,340 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:10:08,340 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:10:08,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 06:10:08,540 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 06:10:08,541 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:10:08,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:10:08,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1739238449, now seen corresponding path program 1 times [2025-03-17 06:10:08,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:10:08,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090035437] [2025-03-17 06:10:08,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:10:08,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:10:08,598 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-03-17 06:10:08,876 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-03-17 06:10:08,876 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:10:08,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:10:09,201 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-17 06:10:09,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:10:09,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090035437] [2025-03-17 06:10:09,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090035437] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:10:09,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:10:09,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 06:10:09,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372735339] [2025-03-17 06:10:09,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:10:09,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 06:10:09,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:10:09,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 06:10:09,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 06:10:09,203 INFO L87 Difference]: Start difference. First operand 104 states and 151 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-17 06:10:09,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:10:09,228 INFO L93 Difference]: Finished difference Result 207 states and 301 transitions. [2025-03-17 06:10:09,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 06:10:09,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 136 [2025-03-17 06:10:09,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:10:09,232 INFO L225 Difference]: With dead ends: 207 [2025-03-17 06:10:09,232 INFO L226 Difference]: Without dead ends: 104 [2025-03-17 06:10:09,232 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 06:10:09,235 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 0 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 06:10:09,235 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 294 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 06:10:09,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2025-03-17 06:10:09,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2025-03-17 06:10:09,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 84 states have (on average 1.3571428571428572) internal successors, (114), 84 states have internal predecessors, (114), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-17 06:10:09,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 150 transitions. [2025-03-17 06:10:09,247 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 150 transitions. Word has length 136 [2025-03-17 06:10:09,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:10:09,249 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 150 transitions. [2025-03-17 06:10:09,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-17 06:10:09,249 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 150 transitions. [2025-03-17 06:10:09,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2025-03-17 06:10:09,251 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:10:09,251 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:10:09,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 06:10:09,251 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:10:09,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:10:09,253 INFO L85 PathProgramCache]: Analyzing trace with hash 2045194670, now seen corresponding path program 1 times [2025-03-17 06:10:09,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:10:09,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067188791] [2025-03-17 06:10:09,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:10:09,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:10:09,288 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-03-17 06:10:09,487 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-03-17 06:10:09,488 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:10:09,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:10:13,300 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-17 06:10:13,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:10:13,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067188791] [2025-03-17 06:10:13,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067188791] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:10:13,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:10:13,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-17 06:10:13,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928463215] [2025-03-17 06:10:13,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:10:13,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:10:13,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:10:13,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:10:13,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:10:13,302 INFO L87 Difference]: Start difference. First operand 104 states and 150 transitions. Second operand has 11 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2025-03-17 06:10:13,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:10:13,986 INFO L93 Difference]: Finished difference Result 259 states and 374 transitions. [2025-03-17 06:10:13,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:10:13,987 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 136 [2025-03-17 06:10:13,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:10:13,989 INFO L225 Difference]: With dead ends: 259 [2025-03-17 06:10:13,990 INFO L226 Difference]: Without dead ends: 156 [2025-03-17 06:10:13,991 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2025-03-17 06:10:13,992 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 637 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 06:10:13,993 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 340 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 06:10:13,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2025-03-17 06:10:14,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 122. [2025-03-17 06:10:14,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 102 states have (on average 1.3823529411764706) internal successors, (141), 102 states have internal predecessors, (141), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-17 06:10:14,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 177 transitions. [2025-03-17 06:10:14,014 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 177 transitions. Word has length 136 [2025-03-17 06:10:14,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:10:14,014 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 177 transitions. [2025-03-17 06:10:14,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2025-03-17 06:10:14,015 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 177 transitions. [2025-03-17 06:10:14,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2025-03-17 06:10:14,016 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:10:14,016 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:10:14,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 06:10:14,016 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:10:14,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:10:14,019 INFO L85 PathProgramCache]: Analyzing trace with hash 248243311, now seen corresponding path program 1 times [2025-03-17 06:10:14,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:10:14,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631979777] [2025-03-17 06:10:14,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:10:14,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:10:14,044 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-03-17 06:10:14,141 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-03-17 06:10:14,141 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:10:14,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:10:19,056 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-17 06:10:19,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:10:19,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631979777] [2025-03-17 06:10:19,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631979777] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:10:19,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:10:19,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-17 06:10:19,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160917450] [2025-03-17 06:10:19,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:10:19,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 06:10:19,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:10:19,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 06:10:19,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2025-03-17 06:10:19,060 INFO L87 Difference]: Start difference. First operand 122 states and 177 transitions. Second operand has 13 states, 12 states have (on average 4.083333333333333) internal successors, (49), 13 states have internal predecessors, (49), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2025-03-17 06:10:20,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:10:20,184 INFO L93 Difference]: Finished difference Result 347 states and 502 transitions. [2025-03-17 06:10:20,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 06:10:20,185 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.083333333333333) internal successors, (49), 13 states have internal predecessors, (49), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 136 [2025-03-17 06:10:20,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:10:20,187 INFO L225 Difference]: With dead ends: 347 [2025-03-17 06:10:20,189 INFO L226 Difference]: Without dead ends: 226 [2025-03-17 06:10:20,189 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2025-03-17 06:10:20,190 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 290 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-17 06:10:20,191 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 675 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-17 06:10:20,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2025-03-17 06:10:20,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 221. [2025-03-17 06:10:20,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 182 states have (on average 1.3681318681318682) internal successors, (249), 182 states have internal predecessors, (249), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2025-03-17 06:10:20,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 321 transitions. [2025-03-17 06:10:20,230 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 321 transitions. Word has length 136 [2025-03-17 06:10:20,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:10:20,231 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 321 transitions. [2025-03-17 06:10:20,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.083333333333333) internal successors, (49), 13 states have internal predecessors, (49), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2025-03-17 06:10:20,232 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 321 transitions. [2025-03-17 06:10:20,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-03-17 06:10:20,233 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:10:20,233 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:10:20,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 06:10:20,233 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:10:20,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:10:20,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1452336305, now seen corresponding path program 1 times [2025-03-17 06:10:20,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:10:20,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678595333] [2025-03-17 06:10:20,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:10:20,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:10:20,259 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-03-17 06:10:20,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-03-17 06:10:20,402 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:10:20,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:10:22,473 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-17 06:10:22,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:10:22,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678595333] [2025-03-17 06:10:22,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678595333] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:10:22,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:10:22,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-17 06:10:22,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957277617] [2025-03-17 06:10:22,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:10:22,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 06:10:22,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:10:22,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 06:10:22,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2025-03-17 06:10:22,476 INFO L87 Difference]: Start difference. First operand 221 states and 321 transitions. Second operand has 12 states, 11 states have (on average 4.636363636363637) internal successors, (51), 12 states have internal predecessors, (51), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2025-03-17 06:10:23,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:10:23,140 INFO L93 Difference]: Finished difference Result 344 states and 500 transitions. [2025-03-17 06:10:23,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:10:23,141 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.636363636363637) internal successors, (51), 12 states have internal predecessors, (51), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 138 [2025-03-17 06:10:23,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:10:23,142 INFO L225 Difference]: With dead ends: 344 [2025-03-17 06:10:23,142 INFO L226 Difference]: Without dead ends: 223 [2025-03-17 06:10:23,143 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2025-03-17 06:10:23,143 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 306 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 06:10:23,143 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 305 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 06:10:23,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2025-03-17 06:10:23,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 205. [2025-03-17 06:10:23,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 166 states have (on average 1.3493975903614457) internal successors, (224), 166 states have internal predecessors, (224), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2025-03-17 06:10:23,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 296 transitions. [2025-03-17 06:10:23,176 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 296 transitions. Word has length 138 [2025-03-17 06:10:23,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:10:23,176 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 296 transitions. [2025-03-17 06:10:23,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.636363636363637) internal successors, (51), 12 states have internal predecessors, (51), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2025-03-17 06:10:23,177 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 296 transitions. [2025-03-17 06:10:23,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-03-17 06:10:23,178 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:10:23,178 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:10:23,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 06:10:23,190 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:10:23,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:10:23,190 INFO L85 PathProgramCache]: Analyzing trace with hash -344615054, now seen corresponding path program 1 times [2025-03-17 06:10:23,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:10:23,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83304088] [2025-03-17 06:10:23,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:10:23,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:10:23,224 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-03-17 06:10:23,337 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-03-17 06:10:23,337 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:10:23,337 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:10:28,679 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-17 06:10:28,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:10:28,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83304088] [2025-03-17 06:10:28,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83304088] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:10:28,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:10:28,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2025-03-17 06:10:28,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516763170] [2025-03-17 06:10:28,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:10:28,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-17 06:10:28,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:10:28,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-17 06:10:28,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2025-03-17 06:10:28,683 INFO L87 Difference]: Start difference. First operand 205 states and 296 transitions. Second operand has 17 states, 14 states have (on average 3.642857142857143) internal successors, (51), 17 states have internal predecessors, (51), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 6 states have call successors, (18) [2025-03-17 06:10:30,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:10:30,904 INFO L93 Difference]: Finished difference Result 385 states and 549 transitions. [2025-03-17 06:10:30,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-17 06:10:30,904 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 3.642857142857143) internal successors, (51), 17 states have internal predecessors, (51), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 6 states have call successors, (18) Word has length 138 [2025-03-17 06:10:30,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:10:30,906 INFO L225 Difference]: With dead ends: 385 [2025-03-17 06:10:30,906 INFO L226 Difference]: Without dead ends: 280 [2025-03-17 06:10:30,906 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2025-03-17 06:10:30,906 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 394 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 1327 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-17 06:10:30,907 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 884 Invalid, 1395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1327 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-17 06:10:30,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2025-03-17 06:10:30,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 276. [2025-03-17 06:10:30,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 227 states have (on average 1.3480176211453745) internal successors, (306), 229 states have internal predecessors, (306), 44 states have call successors, (44), 4 states have call predecessors, (44), 4 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2025-03-17 06:10:30,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 394 transitions. [2025-03-17 06:10:30,950 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 394 transitions. Word has length 138 [2025-03-17 06:10:30,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:10:30,950 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 394 transitions. [2025-03-17 06:10:30,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 3.642857142857143) internal successors, (51), 17 states have internal predecessors, (51), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 6 states have call successors, (18) [2025-03-17 06:10:30,950 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 394 transitions. [2025-03-17 06:10:30,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-17 06:10:30,951 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:10:30,951 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:10:30,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 06:10:30,951 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:10:30,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:10:30,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1531549221, now seen corresponding path program 1 times [2025-03-17 06:10:30,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:10:30,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114374668] [2025-03-17 06:10:30,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:10:30,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:10:30,975 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-17 06:10:31,015 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-17 06:10:31,015 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:10:31,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:10:31,114 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-17 06:10:31,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:10:31,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114374668] [2025-03-17 06:10:31,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114374668] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:10:31,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:10:31,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 06:10:31,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661151996] [2025-03-17 06:10:31,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:10:31,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 06:10:31,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:10:31,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 06:10:31,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 06:10:31,116 INFO L87 Difference]: Start difference. First operand 276 states and 394 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-17 06:10:31,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:10:31,154 INFO L93 Difference]: Finished difference Result 539 states and 772 transitions. [2025-03-17 06:10:31,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 06:10:31,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 141 [2025-03-17 06:10:31,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:10:31,157 INFO L225 Difference]: With dead ends: 539 [2025-03-17 06:10:31,157 INFO L226 Difference]: Without dead ends: 276 [2025-03-17 06:10:31,158 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 06:10:31,159 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 0 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 06:10:31,159 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 292 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 06:10:31,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2025-03-17 06:10:31,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2025-03-17 06:10:31,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 227 states have (on average 1.3348017621145374) internal successors, (303), 229 states have internal predecessors, (303), 44 states have call successors, (44), 4 states have call predecessors, (44), 4 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2025-03-17 06:10:31,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 391 transitions. [2025-03-17 06:10:31,196 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 391 transitions. Word has length 141 [2025-03-17 06:10:31,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:10:31,196 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 391 transitions. [2025-03-17 06:10:31,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-17 06:10:31,196 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 391 transitions. [2025-03-17 06:10:31,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-17 06:10:31,197 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:10:31,197 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:10:31,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 06:10:31,198 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:10:31,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:10:31,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1238146214, now seen corresponding path program 1 times [2025-03-17 06:10:31,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:10:31,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730699254] [2025-03-17 06:10:31,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:10:31,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:10:31,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-17 06:10:31,322 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-17 06:10:31,323 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:10:31,323 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:10:31,695 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-17 06:10:31,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:10:31,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730699254] [2025-03-17 06:10:31,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730699254] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:10:31,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:10:31,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 06:10:31,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237676266] [2025-03-17 06:10:31,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:10:31,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 06:10:31,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:10:31,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 06:10:31,696 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:10:31,697 INFO L87 Difference]: Start difference. First operand 276 states and 391 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-17 06:10:32,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:10:32,359 INFO L93 Difference]: Finished difference Result 654 states and 921 transitions. [2025-03-17 06:10:32,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:10:32,359 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 141 [2025-03-17 06:10:32,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:10:32,364 INFO L225 Difference]: With dead ends: 654 [2025-03-17 06:10:32,365 INFO L226 Difference]: Without dead ends: 391 [2025-03-17 06:10:32,366 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2025-03-17 06:10:32,366 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 184 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 06:10:32,366 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 477 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 06:10:32,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2025-03-17 06:10:32,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 311. [2025-03-17 06:10:32,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 262 states have (on average 1.3206106870229009) internal successors, (346), 264 states have internal predecessors, (346), 44 states have call successors, (44), 4 states have call predecessors, (44), 4 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2025-03-17 06:10:32,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 434 transitions. [2025-03-17 06:10:32,407 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 434 transitions. Word has length 141 [2025-03-17 06:10:32,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:10:32,408 INFO L471 AbstractCegarLoop]: Abstraction has 311 states and 434 transitions. [2025-03-17 06:10:32,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-17 06:10:32,408 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 434 transitions. [2025-03-17 06:10:32,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-03-17 06:10:32,409 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:10:32,409 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:10:32,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 06:10:32,409 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:10:32,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:10:32,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1501009163, now seen corresponding path program 1 times [2025-03-17 06:10:32,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:10:32,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62221738] [2025-03-17 06:10:32,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:10:32,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:10:32,433 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-17 06:10:32,537 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-17 06:10:32,538 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:10:32,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:10:36,089 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-17 06:10:36,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:10:36,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62221738] [2025-03-17 06:10:36,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62221738] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:10:36,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:10:36,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2025-03-17 06:10:36,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606328340] [2025-03-17 06:10:36,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:10:36,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-17 06:10:36,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:10:36,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-17 06:10:36,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2025-03-17 06:10:36,091 INFO L87 Difference]: Start difference. First operand 311 states and 434 transitions. Second operand has 17 states, 16 states have (on average 3.4375) internal successors, (55), 17 states have internal predecessors, (55), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) [2025-03-17 06:10:42,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:10:42,603 INFO L93 Difference]: Finished difference Result 767 states and 1070 transitions. [2025-03-17 06:10:42,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-17 06:10:42,606 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.4375) internal successors, (55), 17 states have internal predecessors, (55), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) Word has length 142 [2025-03-17 06:10:42,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:10:42,609 INFO L225 Difference]: With dead ends: 767 [2025-03-17 06:10:42,609 INFO L226 Difference]: Without dead ends: 469 [2025-03-17 06:10:42,611 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=154, Invalid=548, Unknown=0, NotChecked=0, Total=702 [2025-03-17 06:10:42,611 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 377 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-17 06:10:42,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 855 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-17 06:10:42,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2025-03-17 06:10:42,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 456. [2025-03-17 06:10:42,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 384 states have (on average 1.3229166666666667) internal successors, (508), 387 states have internal predecessors, (508), 64 states have call successors, (64), 7 states have call predecessors, (64), 7 states have return successors, (64), 61 states have call predecessors, (64), 64 states have call successors, (64) [2025-03-17 06:10:42,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 636 transitions. [2025-03-17 06:10:42,693 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 636 transitions. Word has length 142 [2025-03-17 06:10:42,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:10:42,694 INFO L471 AbstractCegarLoop]: Abstraction has 456 states and 636 transitions. [2025-03-17 06:10:42,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.4375) internal successors, (55), 17 states have internal predecessors, (55), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) [2025-03-17 06:10:42,694 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 636 transitions. [2025-03-17 06:10:42,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-03-17 06:10:42,699 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:10:42,699 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:10:42,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 06:10:42,700 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:10:42,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:10:42,700 INFO L85 PathProgramCache]: Analyzing trace with hash 997006774, now seen corresponding path program 1 times [2025-03-17 06:10:42,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:10:42,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733830591] [2025-03-17 06:10:42,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:10:42,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:10:42,728 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-17 06:10:42,799 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-17 06:10:42,799 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:10:42,799 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:10:43,059 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-17 06:10:43,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:10:43,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733830591] [2025-03-17 06:10:43,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733830591] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:10:43,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:10:43,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 06:10:43,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452499912] [2025-03-17 06:10:43,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:10:43,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 06:10:43,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:10:43,060 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 06:10:43,060 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-17 06:10:43,061 INFO L87 Difference]: Start difference. First operand 456 states and 636 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-17 06:10:43,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:10:43,612 INFO L93 Difference]: Finished difference Result 1022 states and 1435 transitions. [2025-03-17 06:10:43,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:10:43,613 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 142 [2025-03-17 06:10:43,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:10:43,616 INFO L225 Difference]: With dead ends: 1022 [2025-03-17 06:10:43,616 INFO L226 Difference]: Without dead ends: 583 [2025-03-17 06:10:43,617 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-17 06:10:43,617 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 53 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 06:10:43,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 761 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 06:10:43,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2025-03-17 06:10:43,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 490. [2025-03-17 06:10:43,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 418 states have (on average 1.3277511961722488) internal successors, (555), 421 states have internal predecessors, (555), 64 states have call successors, (64), 7 states have call predecessors, (64), 7 states have return successors, (64), 61 states have call predecessors, (64), 64 states have call successors, (64) [2025-03-17 06:10:43,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 683 transitions. [2025-03-17 06:10:43,693 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 683 transitions. Word has length 142 [2025-03-17 06:10:43,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:10:43,693 INFO L471 AbstractCegarLoop]: Abstraction has 490 states and 683 transitions. [2025-03-17 06:10:43,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-17 06:10:43,693 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 683 transitions. [2025-03-17 06:10:43,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-03-17 06:10:43,694 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:10:43,695 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:10:43,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 06:10:43,695 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:10:43,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:10:43,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1909833388, now seen corresponding path program 1 times [2025-03-17 06:10:43,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:10:43,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319482862] [2025-03-17 06:10:43,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:10:43,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:10:43,719 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-17 06:10:43,748 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-17 06:10:43,748 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:10:43,748 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:10:43,891 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-17 06:10:43,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:10:43,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319482862] [2025-03-17 06:10:43,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319482862] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:10:43,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:10:43,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 06:10:43,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100244379] [2025-03-17 06:10:43,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:10:43,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:10:43,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:10:43,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:10:43,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:10:43,893 INFO L87 Difference]: Start difference. First operand 490 states and 683 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-17 06:10:44,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:10:44,186 INFO L93 Difference]: Finished difference Result 1078 states and 1505 transitions. [2025-03-17 06:10:44,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:10:44,187 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 142 [2025-03-17 06:10:44,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:10:44,191 INFO L225 Difference]: With dead ends: 1078 [2025-03-17 06:10:44,191 INFO L226 Difference]: Without dead ends: 605 [2025-03-17 06:10:44,193 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 06:10:44,194 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 48 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 06:10:44,194 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 522 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 06:10:44,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2025-03-17 06:10:44,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 513. [2025-03-17 06:10:44,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 441 states have (on average 1.3129251700680271) internal successors, (579), 444 states have internal predecessors, (579), 64 states have call successors, (64), 7 states have call predecessors, (64), 7 states have return successors, (64), 61 states have call predecessors, (64), 64 states have call successors, (64) [2025-03-17 06:10:44,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 707 transitions. [2025-03-17 06:10:44,271 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 707 transitions. Word has length 142 [2025-03-17 06:10:44,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:10:44,271 INFO L471 AbstractCegarLoop]: Abstraction has 513 states and 707 transitions. [2025-03-17 06:10:44,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-17 06:10:44,271 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 707 transitions. [2025-03-17 06:10:44,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-03-17 06:10:44,272 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:10:44,275 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:10:44,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 06:10:44,276 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:10:44,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:10:44,276 INFO L85 PathProgramCache]: Analyzing trace with hash 588182549, now seen corresponding path program 1 times [2025-03-17 06:10:44,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:10:44,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439795678] [2025-03-17 06:10:44,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:10:44,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:10:44,341 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-17 06:10:44,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-17 06:10:44,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:10:44,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:10:45,958 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-17 06:10:45,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:10:45,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439795678] [2025-03-17 06:10:45,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439795678] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:10:45,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:10:45,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-17 06:10:45,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682866388] [2025-03-17 06:10:45,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:10:45,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 06:10:45,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:10:45,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 06:10:45,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2025-03-17 06:10:45,960 INFO L87 Difference]: Start difference. First operand 513 states and 707 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-17 06:10:47,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:10:47,530 INFO L93 Difference]: Finished difference Result 1021 states and 1409 transitions. [2025-03-17 06:10:47,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 06:10:47,531 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 142 [2025-03-17 06:10:47,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:10:47,533 INFO L225 Difference]: With dead ends: 1021 [2025-03-17 06:10:47,533 INFO L226 Difference]: Without dead ends: 525 [2025-03-17 06:10:47,535 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2025-03-17 06:10:47,535 INFO L435 NwaCegarLoop]: 161 mSDtfsCounter, 145 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 1221 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-17 06:10:47,535 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1167 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1221 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-17 06:10:47,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2025-03-17 06:10:47,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 513. [2025-03-17 06:10:47,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 441 states have (on average 1.310657596371882) internal successors, (578), 444 states have internal predecessors, (578), 64 states have call successors, (64), 7 states have call predecessors, (64), 7 states have return successors, (64), 61 states have call predecessors, (64), 64 states have call successors, (64) [2025-03-17 06:10:47,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 706 transitions. [2025-03-17 06:10:47,616 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 706 transitions. Word has length 142 [2025-03-17 06:10:47,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:10:47,616 INFO L471 AbstractCegarLoop]: Abstraction has 513 states and 706 transitions. [2025-03-17 06:10:47,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-17 06:10:47,616 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 706 transitions. [2025-03-17 06:10:47,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-17 06:10:47,617 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:10:47,617 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:10:47,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-17 06:10:47,618 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:10:47,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:10:47,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1607065102, now seen corresponding path program 1 times [2025-03-17 06:10:47,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:10:47,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935011835] [2025-03-17 06:10:47,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:10:47,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:10:47,644 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-17 06:10:47,651 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-17 06:10:47,651 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:10:47,651 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:10:47,762 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2025-03-17 06:10:47,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:10:47,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935011835] [2025-03-17 06:10:47,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935011835] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:10:47,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806534457] [2025-03-17 06:10:47,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:10:47,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:10:47,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:10:47,765 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 06:10:47,765 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 06:10:47,916 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-17 06:10:47,967 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-17 06:10:47,967 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:10:47,967 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:10:47,970 INFO L256 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 06:10:47,973 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:10:48,031 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-17 06:10:48,031 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:10:48,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806534457] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:10:48,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:10:48,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 10 [2025-03-17 06:10:48,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54125045] [2025-03-17 06:10:48,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:10:48,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 06:10:48,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:10:48,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 06:10:48,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-17 06:10:48,033 INFO L87 Difference]: Start difference. First operand 513 states and 706 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-17 06:10:48,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:10:48,151 INFO L93 Difference]: Finished difference Result 1029 states and 1418 transitions. [2025-03-17 06:10:48,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:10:48,152 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 143 [2025-03-17 06:10:48,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:10:48,154 INFO L225 Difference]: With dead ends: 1029 [2025-03-17 06:10:48,154 INFO L226 Difference]: Without dead ends: 533 [2025-03-17 06:10:48,155 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-17 06:10:48,156 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 0 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 06:10:48,156 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 714 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 06:10:48,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2025-03-17 06:10:48,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 524. [2025-03-17 06:10:48,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 452 states have (on average 1.3030973451327434) internal successors, (589), 455 states have internal predecessors, (589), 64 states have call successors, (64), 7 states have call predecessors, (64), 7 states have return successors, (64), 61 states have call predecessors, (64), 64 states have call successors, (64) [2025-03-17 06:10:48,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 717 transitions. [2025-03-17 06:10:48,214 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 717 transitions. Word has length 143 [2025-03-17 06:10:48,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:10:48,215 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 717 transitions. [2025-03-17 06:10:48,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-17 06:10:48,215 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 717 transitions. [2025-03-17 06:10:48,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-17 06:10:48,216 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:10:48,216 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:10:48,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 06:10:48,416 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,SelfDestructingSolverStorable12 [2025-03-17 06:10:48,417 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:10:48,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:10:48,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1574965664, now seen corresponding path program 1 times [2025-03-17 06:10:48,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:10:48,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959494672] [2025-03-17 06:10:48,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:10:48,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:10:48,452 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-17 06:10:48,458 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-17 06:10:48,459 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:10:48,459 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:10:48,558 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2025-03-17 06:10:48,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:10:48,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959494672] [2025-03-17 06:10:48,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959494672] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:10:48,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223474129] [2025-03-17 06:10:48,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:10:48,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:10:48,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:10:48,562 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 06:10:48,563 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 06:10:48,725 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-17 06:10:48,772 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-17 06:10:48,772 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:10:48,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:10:48,775 INFO L256 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 06:10:48,778 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:10:48,791 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-17 06:10:48,791 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:10:48,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223474129] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:10:48,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:10:48,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2025-03-17 06:10:48,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858834490] [2025-03-17 06:10:48,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:10:48,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:10:48,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:10:48,791 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:10:48,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:10:48,792 INFO L87 Difference]: Start difference. First operand 524 states and 717 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-17 06:10:48,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:10:48,861 INFO L93 Difference]: Finished difference Result 1046 states and 1435 transitions. [2025-03-17 06:10:48,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:10:48,862 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 143 [2025-03-17 06:10:48,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:10:48,865 INFO L225 Difference]: With dead ends: 1046 [2025-03-17 06:10:48,865 INFO L226 Difference]: Without dead ends: 539 [2025-03-17 06:10:48,866 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:10:48,866 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 0 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 06:10:48,866 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 568 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 06:10:48,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2025-03-17 06:10:48,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2025-03-17 06:10:48,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 467 states have (on average 1.2933618843683083) internal successors, (604), 470 states have internal predecessors, (604), 64 states have call successors, (64), 7 states have call predecessors, (64), 7 states have return successors, (64), 61 states have call predecessors, (64), 64 states have call successors, (64) [2025-03-17 06:10:48,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 732 transitions. [2025-03-17 06:10:48,929 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 732 transitions. Word has length 143 [2025-03-17 06:10:48,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:10:48,929 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 732 transitions. [2025-03-17 06:10:48,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-17 06:10:48,929 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 732 transitions. [2025-03-17 06:10:48,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-03-17 06:10:48,930 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:10:48,930 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:10:48,938 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 06:10:49,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:10:49,131 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:10:49,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:10:49,131 INFO L85 PathProgramCache]: Analyzing trace with hash 982683576, now seen corresponding path program 1 times [2025-03-17 06:10:49,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:10:49,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743627669] [2025-03-17 06:10:49,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:10:49,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:10:49,156 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-17 06:10:49,257 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-17 06:10:49,257 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:10:49,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:10:49,725 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-17 06:10:49,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:10:49,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743627669] [2025-03-17 06:10:49,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743627669] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:10:49,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:10:49,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-17 06:10:49,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359331516] [2025-03-17 06:10:49,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:10:49,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 06:10:49,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:10:49,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 06:10:49,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-17 06:10:49,726 INFO L87 Difference]: Start difference. First operand 539 states and 732 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-17 06:10:50,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:10:50,380 INFO L93 Difference]: Finished difference Result 1021 states and 1388 transitions. [2025-03-17 06:10:50,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 06:10:50,380 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 144 [2025-03-17 06:10:50,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:10:50,383 INFO L225 Difference]: With dead ends: 1021 [2025-03-17 06:10:50,383 INFO L226 Difference]: Without dead ends: 653 [2025-03-17 06:10:50,383 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:10:50,384 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 52 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-17 06:10:50,384 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 994 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-17 06:10:50,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2025-03-17 06:10:50,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 539. [2025-03-17 06:10:50,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 467 states have (on average 1.2933618843683083) internal successors, (604), 470 states have internal predecessors, (604), 64 states have call successors, (64), 7 states have call predecessors, (64), 7 states have return successors, (64), 61 states have call predecessors, (64), 64 states have call successors, (64) [2025-03-17 06:10:50,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 732 transitions. [2025-03-17 06:10:50,452 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 732 transitions. Word has length 144 [2025-03-17 06:10:50,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:10:50,452 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 732 transitions. [2025-03-17 06:10:50,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-17 06:10:50,453 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 732 transitions. [2025-03-17 06:10:50,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-03-17 06:10:50,453 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:10:50,453 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:10:50,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-17 06:10:50,453 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:10:50,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:10:50,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1223092008, now seen corresponding path program 1 times [2025-03-17 06:10:50,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:10:50,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968049886] [2025-03-17 06:10:50,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:10:50,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:10:50,478 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-17 06:10:50,597 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-17 06:10:50,597 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:10:50,597 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:10:51,792 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-17 06:10:51,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:10:51,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968049886] [2025-03-17 06:10:51,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968049886] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:10:51,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:10:51,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2025-03-17 06:10:51,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752146154] [2025-03-17 06:10:51,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:10:51,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-17 06:10:51,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:10:51,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-17 06:10:51,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2025-03-17 06:10:51,795 INFO L87 Difference]: Start difference. First operand 539 states and 732 transitions. Second operand has 17 states, 16 states have (on average 3.5625) internal successors, (57), 17 states have internal predecessors, (57), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2025-03-17 06:10:53,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:10:53,572 INFO L93 Difference]: Finished difference Result 857 states and 1159 transitions. [2025-03-17 06:10:53,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-17 06:10:53,572 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.5625) internal successors, (57), 17 states have internal predecessors, (57), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 144 [2025-03-17 06:10:53,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:10:53,575 INFO L225 Difference]: With dead ends: 857 [2025-03-17 06:10:53,575 INFO L226 Difference]: Without dead ends: 621 [2025-03-17 06:10:53,575 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=135, Invalid=515, Unknown=0, NotChecked=0, Total=650 [2025-03-17 06:10:53,576 INFO L435 NwaCegarLoop]: 166 mSDtfsCounter, 394 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 1639 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-17 06:10:53,576 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 1319 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1639 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-17 06:10:53,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2025-03-17 06:10:53,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 539. [2025-03-17 06:10:53,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 467 states have (on average 1.2933618843683083) internal successors, (604), 470 states have internal predecessors, (604), 64 states have call successors, (64), 7 states have call predecessors, (64), 7 states have return successors, (64), 61 states have call predecessors, (64), 64 states have call successors, (64) [2025-03-17 06:10:53,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 732 transitions. [2025-03-17 06:10:53,668 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 732 transitions. Word has length 144 [2025-03-17 06:10:53,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:10:53,668 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 732 transitions. [2025-03-17 06:10:53,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.5625) internal successors, (57), 17 states have internal predecessors, (57), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2025-03-17 06:10:53,668 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 732 transitions. [2025-03-17 06:10:53,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-03-17 06:10:53,669 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:10:53,669 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:10:53,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-17 06:10:53,669 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:10:53,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:10:53,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1353421079, now seen corresponding path program 1 times [2025-03-17 06:10:53,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:10:53,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077439845] [2025-03-17 06:10:53,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:10:53,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:10:53,777 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-17 06:10:53,883 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-17 06:10:53,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:10:53,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:10:54,484 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-17 06:10:54,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:10:54,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077439845] [2025-03-17 06:10:54,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077439845] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:10:54,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:10:54,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-17 06:10:54,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549727154] [2025-03-17 06:10:54,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:10:54,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:10:54,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:10:54,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:10:54,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:10:54,485 INFO L87 Difference]: Start difference. First operand 539 states and 732 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-17 06:10:55,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:10:55,182 INFO L93 Difference]: Finished difference Result 1037 states and 1406 transitions. [2025-03-17 06:10:55,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:10:55,182 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 144 [2025-03-17 06:10:55,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:10:55,185 INFO L225 Difference]: With dead ends: 1037 [2025-03-17 06:10:55,185 INFO L226 Difference]: Without dead ends: 669 [2025-03-17 06:10:55,185 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2025-03-17 06:10:55,186 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 156 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 06:10:55,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 677 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 06:10:55,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2025-03-17 06:10:55,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 562. [2025-03-17 06:10:55,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 490 states have (on average 1.2897959183673469) internal successors, (632), 493 states have internal predecessors, (632), 64 states have call successors, (64), 7 states have call predecessors, (64), 7 states have return successors, (64), 61 states have call predecessors, (64), 64 states have call successors, (64) [2025-03-17 06:10:55,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 760 transitions. [2025-03-17 06:10:55,259 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 760 transitions. Word has length 144 [2025-03-17 06:10:55,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:10:55,259 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 760 transitions. [2025-03-17 06:10:55,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-17 06:10:55,259 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 760 transitions. [2025-03-17 06:10:55,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-03-17 06:10:55,260 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:10:55,260 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:10:55,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-17 06:10:55,260 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:10:55,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:10:55,260 INFO L85 PathProgramCache]: Analyzing trace with hash -443530280, now seen corresponding path program 1 times [2025-03-17 06:10:55,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:10:55,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132705797] [2025-03-17 06:10:55,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:10:55,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:10:55,282 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-17 06:10:55,341 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-17 06:10:55,341 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:10:55,341 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:10:57,898 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-17 06:10:57,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:10:57,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132705797] [2025-03-17 06:10:57,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132705797] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:10:57,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:10:57,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2025-03-17 06:10:57,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449266973] [2025-03-17 06:10:57,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:10:57,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-17 06:10:57,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:10:57,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-17 06:10:57,900 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2025-03-17 06:10:57,900 INFO L87 Difference]: Start difference. First operand 562 states and 760 transitions. Second operand has 17 states, 16 states have (on average 3.5625) internal successors, (57), 17 states have internal predecessors, (57), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2025-03-17 06:10:59,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:10:59,531 INFO L93 Difference]: Finished difference Result 1011 states and 1362 transitions. [2025-03-17 06:10:59,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 06:10:59,532 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.5625) internal successors, (57), 17 states have internal predecessors, (57), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 144 [2025-03-17 06:10:59,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:10:59,534 INFO L225 Difference]: With dead ends: 1011 [2025-03-17 06:10:59,534 INFO L226 Difference]: Without dead ends: 620 [2025-03-17 06:10:59,535 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2025-03-17 06:10:59,551 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 241 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 1325 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-17 06:10:59,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 1080 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1325 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-17 06:10:59,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2025-03-17 06:10:59,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 611. [2025-03-17 06:10:59,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 536 states have (on average 1.287313432835821) internal successors, (690), 540 states have internal predecessors, (690), 66 states have call successors, (66), 8 states have call predecessors, (66), 8 states have return successors, (66), 62 states have call predecessors, (66), 66 states have call successors, (66) [2025-03-17 06:10:59,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 822 transitions. [2025-03-17 06:10:59,656 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 822 transitions. Word has length 144 [2025-03-17 06:10:59,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:10:59,656 INFO L471 AbstractCegarLoop]: Abstraction has 611 states and 822 transitions. [2025-03-17 06:10:59,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.5625) internal successors, (57), 17 states have internal predecessors, (57), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2025-03-17 06:10:59,657 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 822 transitions. [2025-03-17 06:10:59,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-03-17 06:10:59,658 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:10:59,658 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:10:59,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-17 06:10:59,658 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:10:59,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:10:59,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1813380727, now seen corresponding path program 1 times [2025-03-17 06:10:59,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:10:59,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000949163] [2025-03-17 06:10:59,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:10:59,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:10:59,691 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-17 06:10:59,797 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-17 06:10:59,797 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:10:59,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:11:01,633 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-17 06:11:01,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:11:01,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000949163] [2025-03-17 06:11:01,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000949163] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:11:01,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:11:01,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-17 06:11:01,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143098755] [2025-03-17 06:11:01,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:11:01,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 06:11:01,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:11:01,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 06:11:01,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2025-03-17 06:11:01,638 INFO L87 Difference]: Start difference. First operand 611 states and 822 transitions. Second operand has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-17 06:11:02,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:11:02,713 INFO L93 Difference]: Finished difference Result 1093 states and 1467 transitions. [2025-03-17 06:11:02,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 06:11:02,713 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 144 [2025-03-17 06:11:02,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:11:02,715 INFO L225 Difference]: With dead ends: 1093 [2025-03-17 06:11:02,715 INFO L226 Difference]: Without dead ends: 653 [2025-03-17 06:11:02,716 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2025-03-17 06:11:02,716 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 229 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-17 06:11:02,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 921 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-17 06:11:02,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2025-03-17 06:11:02,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 604. [2025-03-17 06:11:02,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 529 states have (on average 1.289224952741021) internal successors, (682), 533 states have internal predecessors, (682), 66 states have call successors, (66), 8 states have call predecessors, (66), 8 states have return successors, (66), 62 states have call predecessors, (66), 66 states have call successors, (66) [2025-03-17 06:11:02,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 814 transitions. [2025-03-17 06:11:02,777 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 814 transitions. Word has length 144 [2025-03-17 06:11:02,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:11:02,777 INFO L471 AbstractCegarLoop]: Abstraction has 604 states and 814 transitions. [2025-03-17 06:11:02,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-17 06:11:02,778 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 814 transitions. [2025-03-17 06:11:02,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2025-03-17 06:11:02,779 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:11:02,779 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:11:02,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-17 06:11:02,779 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:11:02,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:11:02,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1882064919, now seen corresponding path program 1 times [2025-03-17 06:11:02,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:11:02,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163432756] [2025-03-17 06:11:02,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:11:02,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:11:02,802 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-03-17 06:11:02,810 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-03-17 06:11:02,810 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:11:02,810 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:11:02,913 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2025-03-17 06:11:02,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:11:02,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163432756] [2025-03-17 06:11:02,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163432756] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:11:02,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110348614] [2025-03-17 06:11:02,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:11:02,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:11:02,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:11:02,915 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 06:11:02,916 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 06:11:03,106 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-03-17 06:11:03,156 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-03-17 06:11:03,157 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:11:03,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:11:03,159 INFO L256 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 06:11:03,161 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:11:03,197 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-17 06:11:03,197 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:11:03,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110348614] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:11:03,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:11:03,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 12 [2025-03-17 06:11:03,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560021744] [2025-03-17 06:11:03,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:11:03,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 06:11:03,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:11:03,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 06:11:03,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2025-03-17 06:11:03,198 INFO L87 Difference]: Start difference. First operand 604 states and 814 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-17 06:11:03,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:11:03,305 INFO L93 Difference]: Finished difference Result 1230 states and 1654 transitions. [2025-03-17 06:11:03,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:11:03,306 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 145 [2025-03-17 06:11:03,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:11:03,308 INFO L225 Difference]: With dead ends: 1230 [2025-03-17 06:11:03,308 INFO L226 Difference]: Without dead ends: 643 [2025-03-17 06:11:03,309 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2025-03-17 06:11:03,309 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 0 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 06:11:03,309 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 852 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 06:11:03,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2025-03-17 06:11:03,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 610. [2025-03-17 06:11:03,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 535 states have (on average 1.285981308411215) internal successors, (688), 539 states have internal predecessors, (688), 66 states have call successors, (66), 8 states have call predecessors, (66), 8 states have return successors, (66), 62 states have call predecessors, (66), 66 states have call successors, (66) [2025-03-17 06:11:03,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 820 transitions. [2025-03-17 06:11:03,382 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 820 transitions. Word has length 145 [2025-03-17 06:11:03,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:11:03,382 INFO L471 AbstractCegarLoop]: Abstraction has 610 states and 820 transitions. [2025-03-17 06:11:03,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-17 06:11:03,382 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 820 transitions. [2025-03-17 06:11:03,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2025-03-17 06:11:03,383 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:11:03,383 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:11:03,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-17 06:11:03,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:11:03,584 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:11:03,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:11:03,584 INFO L85 PathProgramCache]: Analyzing trace with hash 2016266115, now seen corresponding path program 1 times [2025-03-17 06:11:03,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:11:03,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182794375] [2025-03-17 06:11:03,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:11:03,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:11:03,606 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-03-17 06:11:03,703 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-03-17 06:11:03,704 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:11:03,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:11:05,845 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-17 06:11:05,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:11:05,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182794375] [2025-03-17 06:11:05,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182794375] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:11:05,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:11:05,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-17 06:11:05,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098914126] [2025-03-17 06:11:05,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:11:05,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 06:11:05,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:11:05,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 06:11:05,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2025-03-17 06:11:05,846 INFO L87 Difference]: Start difference. First operand 610 states and 820 transitions. Second operand has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 12 states have internal predecessors, (58), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2025-03-17 06:11:06,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:11:06,684 INFO L93 Difference]: Finished difference Result 1190 states and 1607 transitions. [2025-03-17 06:11:06,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:11:06,685 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 12 states have internal predecessors, (58), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 145 [2025-03-17 06:11:06,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:11:06,687 INFO L225 Difference]: With dead ends: 1190 [2025-03-17 06:11:06,687 INFO L226 Difference]: Without dead ends: 597 [2025-03-17 06:11:06,688 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2025-03-17 06:11:06,689 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 349 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-17 06:11:06,689 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 365 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-17 06:11:06,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2025-03-17 06:11:06,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 595. [2025-03-17 06:11:06,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 520 states have (on average 1.2846153846153847) internal successors, (668), 524 states have internal predecessors, (668), 66 states have call successors, (66), 8 states have call predecessors, (66), 8 states have return successors, (66), 62 states have call predecessors, (66), 66 states have call successors, (66) [2025-03-17 06:11:06,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 800 transitions. [2025-03-17 06:11:06,758 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 800 transitions. Word has length 145 [2025-03-17 06:11:06,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:11:06,759 INFO L471 AbstractCegarLoop]: Abstraction has 595 states and 800 transitions. [2025-03-17 06:11:06,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 12 states have internal predecessors, (58), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2025-03-17 06:11:06,759 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 800 transitions. [2025-03-17 06:11:06,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2025-03-17 06:11:06,760 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:11:06,760 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:11:06,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-17 06:11:06,760 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:11:06,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:11:06,760 INFO L85 PathProgramCache]: Analyzing trace with hash 887115582, now seen corresponding path program 1 times [2025-03-17 06:11:06,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:11:06,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651417934] [2025-03-17 06:11:06,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:11:06,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:11:06,785 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-03-17 06:11:06,865 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-03-17 06:11:06,865 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:11:06,865 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:11:08,485 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-17 06:11:08,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:11:08,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651417934] [2025-03-17 06:11:08,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651417934] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:11:08,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:11:08,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2025-03-17 06:11:08,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174875412] [2025-03-17 06:11:08,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:11:08,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-17 06:11:08,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:11:08,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-17 06:11:08,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2025-03-17 06:11:08,490 INFO L87 Difference]: Start difference. First operand 595 states and 800 transitions. Second operand has 16 states, 14 states have (on average 4.142857142857143) internal successors, (58), 16 states have internal predecessors, (58), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 5 states have call successors, (18) [2025-03-17 06:11:09,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:11:09,949 INFO L93 Difference]: Finished difference Result 1113 states and 1471 transitions. [2025-03-17 06:11:09,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 06:11:09,950 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 4.142857142857143) internal successors, (58), 16 states have internal predecessors, (58), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 5 states have call successors, (18) Word has length 145 [2025-03-17 06:11:09,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:11:09,953 INFO L225 Difference]: With dead ends: 1113 [2025-03-17 06:11:09,953 INFO L226 Difference]: Without dead ends: 1111 [2025-03-17 06:11:09,953 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=168, Invalid=482, Unknown=0, NotChecked=0, Total=650 [2025-03-17 06:11:09,958 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 351 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-17 06:11:09,959 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 660 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-17 06:11:09,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2025-03-17 06:11:10,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 951. [2025-03-17 06:11:10,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 951 states, 876 states have (on average 1.2910958904109588) internal successors, (1131), 880 states have internal predecessors, (1131), 66 states have call successors, (66), 8 states have call predecessors, (66), 8 states have return successors, (66), 62 states have call predecessors, (66), 66 states have call successors, (66) [2025-03-17 06:11:10,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1263 transitions. [2025-03-17 06:11:10,059 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1263 transitions. Word has length 145 [2025-03-17 06:11:10,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:11:10,059 INFO L471 AbstractCegarLoop]: Abstraction has 951 states and 1263 transitions. [2025-03-17 06:11:10,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 4.142857142857143) internal successors, (58), 16 states have internal predecessors, (58), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 5 states have call successors, (18) [2025-03-17 06:11:10,060 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1263 transitions. [2025-03-17 06:11:10,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2025-03-17 06:11:10,061 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:11:10,061 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:11:10,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-17 06:11:10,061 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:11:10,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:11:10,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1616624677, now seen corresponding path program 1 times [2025-03-17 06:11:10,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:11:10,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605240146] [2025-03-17 06:11:10,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:11:10,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:11:10,084 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-03-17 06:11:10,356 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-03-17 06:11:10,357 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:11:10,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:11:14,530 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-17 06:11:14,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:11:14,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605240146] [2025-03-17 06:11:14,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605240146] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:11:14,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:11:14,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2025-03-17 06:11:14,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027568186] [2025-03-17 06:11:14,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:11:14,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-17 06:11:14,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:11:14,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-17 06:11:14,531 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2025-03-17 06:11:14,531 INFO L87 Difference]: Start difference. First operand 951 states and 1263 transitions. Second operand has 22 states, 20 states have (on average 2.95) internal successors, (59), 22 states have internal predecessors, (59), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 4 states have call predecessors, (18), 6 states have call successors, (18) [2025-03-17 06:11:17,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:11:17,670 INFO L93 Difference]: Finished difference Result 1535 states and 2032 transitions. [2025-03-17 06:11:17,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-17 06:11:17,672 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.95) internal successors, (59), 22 states have internal predecessors, (59), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 4 states have call predecessors, (18), 6 states have call successors, (18) Word has length 146 [2025-03-17 06:11:17,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:11:17,675 INFO L225 Difference]: With dead ends: 1535 [2025-03-17 06:11:17,675 INFO L226 Difference]: Without dead ends: 1115 [2025-03-17 06:11:17,676 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=268, Invalid=1138, Unknown=0, NotChecked=0, Total=1406 [2025-03-17 06:11:17,677 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 433 mSDsluCounter, 1307 mSDsCounter, 0 mSdLazyCounter, 2035 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 2102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-17 06:11:17,677 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 1456 Invalid, 2102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 2035 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-17 06:11:17,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2025-03-17 06:11:17,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1026. [2025-03-17 06:11:17,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 948 states have (on average 1.290084388185654) internal successors, (1223), 953 states have internal predecessors, (1223), 68 states have call successors, (68), 9 states have call predecessors, (68), 9 states have return successors, (68), 63 states have call predecessors, (68), 68 states have call successors, (68) [2025-03-17 06:11:17,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1359 transitions. [2025-03-17 06:11:17,760 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1359 transitions. Word has length 146 [2025-03-17 06:11:17,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:11:17,760 INFO L471 AbstractCegarLoop]: Abstraction has 1026 states and 1359 transitions. [2025-03-17 06:11:17,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.95) internal successors, (59), 22 states have internal predecessors, (59), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 4 states have call predecessors, (18), 6 states have call successors, (18) [2025-03-17 06:11:17,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1359 transitions. [2025-03-17 06:11:17,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2025-03-17 06:11:17,761 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:11:17,762 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:11:17,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-17 06:11:17,762 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:11:17,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:11:17,762 INFO L85 PathProgramCache]: Analyzing trace with hash 640286330, now seen corresponding path program 1 times [2025-03-17 06:11:17,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:11:17,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090430120] [2025-03-17 06:11:17,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:11:17,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:11:17,784 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-03-17 06:11:17,871 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-03-17 06:11:17,871 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:11:17,871 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:11:21,804 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-17 06:11:21,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:11:21,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090430120] [2025-03-17 06:11:21,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090430120] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:11:21,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:11:21,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2025-03-17 06:11:21,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216268967] [2025-03-17 06:11:21,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:11:21,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-17 06:11:21,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:11:21,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-17 06:11:21,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2025-03-17 06:11:21,806 INFO L87 Difference]: Start difference. First operand 1026 states and 1359 transitions. Second operand has 21 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 21 states have internal predecessors, (59), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 5 states have call successors, (18) [2025-03-17 06:11:25,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:11:25,380 INFO L93 Difference]: Finished difference Result 1811 states and 2384 transitions. [2025-03-17 06:11:25,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 06:11:25,381 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 21 states have internal predecessors, (59), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 5 states have call successors, (18) Word has length 146 [2025-03-17 06:11:25,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:11:25,384 INFO L225 Difference]: With dead ends: 1811 [2025-03-17 06:11:25,384 INFO L226 Difference]: Without dead ends: 1316 [2025-03-17 06:11:25,385 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=204, Invalid=726, Unknown=0, NotChecked=0, Total=930 [2025-03-17 06:11:25,385 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 486 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-17 06:11:25,385 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 896 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-17 06:11:25,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2025-03-17 06:11:25,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1008. [2025-03-17 06:11:25,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 930 states have (on average 1.289247311827957) internal successors, (1199), 935 states have internal predecessors, (1199), 68 states have call successors, (68), 9 states have call predecessors, (68), 9 states have return successors, (68), 63 states have call predecessors, (68), 68 states have call successors, (68) [2025-03-17 06:11:25,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1335 transitions. [2025-03-17 06:11:25,469 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1335 transitions. Word has length 146 [2025-03-17 06:11:25,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:11:25,469 INFO L471 AbstractCegarLoop]: Abstraction has 1008 states and 1335 transitions. [2025-03-17 06:11:25,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 21 states have internal predecessors, (59), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 5 states have call successors, (18) [2025-03-17 06:11:25,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1335 transitions. [2025-03-17 06:11:25,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2025-03-17 06:11:25,470 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:11:25,470 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:11:25,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-03-17 06:11:25,471 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:11:25,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:11:25,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1246976199, now seen corresponding path program 1 times [2025-03-17 06:11:25,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:11:25,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161863293] [2025-03-17 06:11:25,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:11:25,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:11:25,493 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-03-17 06:11:25,535 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-03-17 06:11:25,535 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:11:25,535 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:11:26,716 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-17 06:11:26,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:11:26,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161863293] [2025-03-17 06:11:26,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161863293] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:11:26,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:11:26,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-17 06:11:26,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719742458] [2025-03-17 06:11:26,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:11:26,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:11:26,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:11:26,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:11:26,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:11:26,717 INFO L87 Difference]: Start difference. First operand 1008 states and 1335 transitions. Second operand has 11 states, 10 states have (on average 5.9) internal successors, (59), 11 states have internal predecessors, (59), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-17 06:11:27,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:11:27,533 INFO L93 Difference]: Finished difference Result 2079 states and 2740 transitions. [2025-03-17 06:11:27,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 06:11:27,534 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.9) internal successors, (59), 11 states have internal predecessors, (59), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 146 [2025-03-17 06:11:27,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:11:27,542 INFO L225 Difference]: With dead ends: 2079 [2025-03-17 06:11:27,542 INFO L226 Difference]: Without dead ends: 1318 [2025-03-17 06:11:27,543 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2025-03-17 06:11:27,543 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 435 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-17 06:11:27,543 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 512 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-17 06:11:27,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states.