./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-56.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-s_file-56.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 ddaccc1a0ddb0072edffeef8ad9576acf619c322d8f731037fda7dc2530a10f9 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 05:59:15,997 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 05:59:16,048 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 05:59:16,052 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 05:59:16,052 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 05:59:16,074 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 05:59:16,076 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 05:59:16,076 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 05:59:16,076 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 05:59:16,076 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 05:59:16,077 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 05:59:16,077 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 05:59:16,077 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 05:59:16,078 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 05:59:16,078 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 05:59:16,078 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 05:59:16,078 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 05:59:16,078 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 05:59:16,078 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 05:59:16,078 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 05:59:16,079 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 05:59:16,079 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 05:59:16,079 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 05:59:16,079 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 05:59:16,079 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 05:59:16,079 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 05:59:16,079 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 05:59:16,079 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 05:59:16,079 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 05:59:16,079 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 05:59:16,079 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 05:59:16,079 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 05:59:16,079 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 05:59:16,080 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 05:59:16,080 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 05:59:16,080 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 05:59:16,080 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 05:59:16,080 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 05:59:16,080 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 05:59:16,080 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 05:59:16,081 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 05:59:16,081 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 05:59:16,081 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 05:59:16,081 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 -> ddaccc1a0ddb0072edffeef8ad9576acf619c322d8f731037fda7dc2530a10f9 [2025-03-17 05:59:16,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 05:59:16,307 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 05:59:16,309 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 05:59:16,310 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 05:59:16,310 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 05:59:16,311 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-56.i [2025-03-17 05:59:17,438 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56b8130a7/96a7ad7ed0284443be39ac820c5bea87/FLAG7682e3c3c [2025-03-17 05:59:17,647 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 05:59:17,648 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-56.i [2025-03-17 05:59:17,653 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56b8130a7/96a7ad7ed0284443be39ac820c5bea87/FLAG7682e3c3c [2025-03-17 05:59:17,993 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56b8130a7/96a7ad7ed0284443be39ac820c5bea87 [2025-03-17 05:59:17,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 05:59:17,997 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 05:59:17,998 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 05:59:17,998 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 05:59:18,000 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 05:59:18,001 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 05:59:17" (1/1) ... [2025-03-17 05:59:18,002 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fa95539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:59:18, skipping insertion in model container [2025-03-17 05:59:18,002 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 05:59:17" (1/1) ... [2025-03-17 05:59:18,017 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 05:59:18,103 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-s_file-56.i[916,929] [2025-03-17 05:59:18,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 05:59:18,151 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 05:59:18,161 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-s_file-56.i[916,929] [2025-03-17 05:59:18,198 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 05:59:18,215 INFO L204 MainTranslator]: Completed translation [2025-03-17 05:59:18,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:59:18 WrapperNode [2025-03-17 05:59:18,215 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 05:59:18,216 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 05:59:18,216 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 05:59:18,216 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 05:59:18,220 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:59:18" (1/1) ... [2025-03-17 05:59:18,235 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:59:18" (1/1) ... [2025-03-17 05:59:18,282 INFO L138 Inliner]: procedures = 30, calls = 178, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 568 [2025-03-17 05:59:18,283 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 05:59:18,283 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 05:59:18,283 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 05:59:18,283 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 05:59:18,290 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:59:18" (1/1) ... [2025-03-17 05:59:18,291 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:59:18" (1/1) ... [2025-03-17 05:59:18,297 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:59:18" (1/1) ... [2025-03-17 05:59:18,302 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2025-03-17 05:59:18,303 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:59:18" (1/1) ... [2025-03-17 05:59:18,303 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:59:18" (1/1) ... [2025-03-17 05:59:18,314 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:59:18" (1/1) ... [2025-03-17 05:59:18,316 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:59:18" (1/1) ... [2025-03-17 05:59:18,318 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:59:18" (1/1) ... [2025-03-17 05:59:18,319 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:59:18" (1/1) ... [2025-03-17 05:59:18,325 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 05:59:18,326 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 05:59:18,326 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 05:59:18,326 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 05:59:18,327 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:59:18" (1/1) ... [2025-03-17 05:59:18,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 05:59:18,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:59:18,360 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 05:59:18,363 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 05:59:18,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 05:59:18,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2025-03-17 05:59:18,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2025-03-17 05:59:18,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2025-03-17 05:59:18,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-03-17 05:59:18,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2025-03-17 05:59:18,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-03-17 05:59:18,381 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 05:59:18,381 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 05:59:18,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-17 05:59:18,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 05:59:18,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 05:59:18,459 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 05:59:18,460 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 05:59:18,902 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L125: havoc property_#t~mem90#1;havoc property_#t~bitwise91#1;havoc property_#t~ite119#1;havoc property_#t~mem107#1;havoc property_#t~mem98#1;havoc property_#t~mem97#1;havoc property_#t~mem92#1;havoc property_#t~mem93#1;havoc property_#t~ite96#1;havoc property_#t~mem94#1;havoc property_#t~mem95#1;havoc property_#t~ite106#1;havoc property_#t~mem99#1;havoc property_#t~mem105#1;havoc property_#t~mem100#1;havoc property_#t~mem101#1;havoc property_#t~ite104#1;havoc property_#t~mem102#1;havoc property_#t~mem103#1;havoc property_#t~mem118#1;havoc property_#t~mem108#1;havoc property_#t~mem109#1;havoc property_#t~ite112#1;havoc property_#t~mem110#1;havoc property_#t~mem111#1;havoc property_#t~mem113#1;havoc property_#t~mem114#1;havoc property_#t~ite117#1;havoc property_#t~mem115#1;havoc property_#t~mem116#1;havoc property_#t~mem120#1;havoc property_#t~ite130#1;havoc property_#t~mem121#1;havoc property_#t~mem122#1;havoc property_#t~short123#1;havoc property_#t~ite129#1;havoc property_#t~mem124#1;havoc property_#t~mem125#1;havoc property_#t~ite128#1;havoc property_#t~mem127#1;havoc property_#t~mem126#1;havoc property_#t~short131#1;havoc property_#t~mem132#1;havoc property_#t~mem133#1;havoc property_#t~mem134#1;havoc property_#t~ite137#1;havoc property_#t~mem136#1;havoc property_#t~mem135#1;havoc property_#t~short138#1;havoc property_#t~mem139#1;havoc property_#t~mem140#1;havoc property_#t~short141#1;havoc property_#t~ite157#1;havoc property_#t~mem145#1;havoc property_#t~mem142#1;havoc property_#t~mem143#1;havoc property_#t~bitwise144#1;havoc property_#t~ite154#1;havoc property_#t~mem146#1;havoc property_#t~mem147#1;havoc property_#t~ite151#1;havoc property_#t~mem149#1;havoc property_#t~mem148#1;havoc property_#t~mem150#1;havoc property_#t~mem153#1;havoc property_#t~mem152#1;havoc property_#t~mem156#1;havoc property_#t~mem155#1;havoc property_#t~short158#1; [2025-03-17 05:59:18,927 INFO L? ?]: Removed 156 outVars from TransFormulas that were not future-live. [2025-03-17 05:59:18,927 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 05:59:18,938 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 05:59:18,938 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 05:59:18,939 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 05:59:18 BoogieIcfgContainer [2025-03-17 05:59:18,939 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 05:59:18,941 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 05:59:18,941 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 05:59:18,944 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 05:59:18,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 05:59:17" (1/3) ... [2025-03-17 05:59:18,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c460098 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 05:59:18, skipping insertion in model container [2025-03-17 05:59:18,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:59:18" (2/3) ... [2025-03-17 05:59:18,945 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c460098 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 05:59:18, skipping insertion in model container [2025-03-17 05:59:18,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 05:59:18" (3/3) ... [2025-03-17 05:59:18,946 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-56.i [2025-03-17 05:59:18,957 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 05:59:18,958 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-s_file-56.i that has 2 procedures, 120 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-17 05:59:18,997 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 05:59:19,005 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;@6c40e14e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 05:59:19,005 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 05:59:19,008 INFO L276 IsEmpty]: Start isEmpty. Operand has 120 states, 98 states have (on average 1.4489795918367347) internal successors, (142), 99 states have internal predecessors, (142), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-17 05:59:19,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2025-03-17 05:59:19,016 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:59:19,016 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:19,017 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:59:19,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:59:19,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1757809821, now seen corresponding path program 1 times [2025-03-17 05:59:19,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:59:19,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309593117] [2025-03-17 05:59:19,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:59:19,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:59:19,129 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-17 05:59:19,206 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-17 05:59:19,207 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:59:19,207 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:59:19,398 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2025-03-17 05:59:19,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:59:19,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309593117] [2025-03-17 05:59:19,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309593117] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 05:59:19,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763282340] [2025-03-17 05:59:19,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:59:19,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:59:19,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:59:19,404 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 05:59:19,405 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 05:59:19,526 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-17 05:59:19,602 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-17 05:59:19,603 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:59:19,603 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:59:19,606 INFO L256 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 05:59:19,614 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:59:19,632 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2025-03-17 05:59:19,632 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 05:59:19,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763282340] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:59:19,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 05:59:19,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 05:59:19,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121752073] [2025-03-17 05:59:19,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:59:19,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 05:59:19,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:59:19,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 05:59:19,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 05:59:19,659 INFO L87 Difference]: Start difference. First operand has 120 states, 98 states have (on average 1.4489795918367347) internal successors, (142), 99 states have internal predecessors, (142), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-17 05:59:19,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:59:19,692 INFO L93 Difference]: Finished difference Result 237 states and 377 transitions. [2025-03-17 05:59:19,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 05:59:19,697 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 147 [2025-03-17 05:59:19,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:59:19,701 INFO L225 Difference]: With dead ends: 237 [2025-03-17 05:59:19,702 INFO L226 Difference]: Without dead ends: 118 [2025-03-17 05:59:19,704 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 148 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 05:59:19,705 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 05:59:19,706 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 172 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 05:59:19,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2025-03-17 05:59:19,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2025-03-17 05:59:19,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 97 states have (on average 1.422680412371134) internal successors, (138), 97 states have internal predecessors, (138), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-17 05:59:19,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 176 transitions. [2025-03-17 05:59:19,740 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 176 transitions. Word has length 147 [2025-03-17 05:59:19,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:59:19,740 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 176 transitions. [2025-03-17 05:59:19,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-17 05:59:19,741 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 176 transitions. [2025-03-17 05:59:19,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2025-03-17 05:59:19,743 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:59:19,744 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:19,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 05:59:19,944 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 05:59:19,945 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:59:19,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:59:19,945 INFO L85 PathProgramCache]: Analyzing trace with hash 42969926, now seen corresponding path program 1 times [2025-03-17 05:59:19,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:59:19,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10552677] [2025-03-17 05:59:19,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:59:19,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:59:19,971 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-17 05:59:20,127 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-17 05:59:20,127 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:59:20,127 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:59:21,743 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 05:59:21,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:59:21,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10552677] [2025-03-17 05:59:21,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10552677] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:59:21,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:59:21,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-17 05:59:21,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143706534] [2025-03-17 05:59:21,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:59:21,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 05:59:21,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:59:21,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 05:59:21,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2025-03-17 05:59:21,747 INFO L87 Difference]: Start difference. First operand 118 states and 176 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-17 05:59:23,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:59:23,479 INFO L93 Difference]: Finished difference Result 653 states and 982 transitions. [2025-03-17 05:59:23,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-17 05:59:23,479 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 147 [2025-03-17 05:59:23,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:59:23,482 INFO L225 Difference]: With dead ends: 653 [2025-03-17 05:59:23,483 INFO L226 Difference]: Without dead ends: 536 [2025-03-17 05:59:23,484 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=563, Unknown=0, NotChecked=0, Total=702 [2025-03-17 05:59:23,484 INFO L435 NwaCegarLoop]: 169 mSDtfsCounter, 527 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 2036 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 2132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-17 05:59:23,484 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 1625 Invalid, 2132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 2036 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-17 05:59:23,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2025-03-17 05:59:23,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 281. [2025-03-17 05:59:23,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 240 states have (on average 1.4666666666666666) internal successors, (352), 240 states have internal predecessors, (352), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2025-03-17 05:59:23,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 428 transitions. [2025-03-17 05:59:23,526 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 428 transitions. Word has length 147 [2025-03-17 05:59:23,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:59:23,527 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 428 transitions. [2025-03-17 05:59:23,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-17 05:59:23,527 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 428 transitions. [2025-03-17 05:59:23,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2025-03-17 05:59:23,531 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:59:23,531 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:23,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 05:59:23,532 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:59:23,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:59:23,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1466262637, now seen corresponding path program 1 times [2025-03-17 05:59:23,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:59:23,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624171304] [2025-03-17 05:59:23,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:59:23,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:59:23,564 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-03-17 05:59:23,581 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-03-17 05:59:23,581 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:59:23,581 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:59:23,633 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 05:59:23,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:59:23,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624171304] [2025-03-17 05:59:23,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624171304] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:59:23,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:59:23,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 05:59:23,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684707844] [2025-03-17 05:59:23,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:59:23,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 05:59:23,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:59:23,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 05:59:23,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 05:59:23,636 INFO L87 Difference]: Start difference. First operand 281 states and 428 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-17 05:59:23,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:59:23,701 INFO L93 Difference]: Finished difference Result 560 states and 853 transitions. [2025-03-17 05:59:23,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 05:59:23,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 148 [2025-03-17 05:59:23,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:59:23,705 INFO L225 Difference]: With dead ends: 560 [2025-03-17 05:59:23,706 INFO L226 Difference]: Without dead ends: 280 [2025-03-17 05:59:23,707 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 05:59:23,709 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 0 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 05:59:23,709 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 332 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 05:59:23,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2025-03-17 05:59:23,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2025-03-17 05:59:23,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 239 states have (on average 1.4560669456066946) internal successors, (348), 239 states have internal predecessors, (348), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2025-03-17 05:59:23,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 424 transitions. [2025-03-17 05:59:23,724 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 424 transitions. Word has length 148 [2025-03-17 05:59:23,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:59:23,724 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 424 transitions. [2025-03-17 05:59:23,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-17 05:59:23,725 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 424 transitions. [2025-03-17 05:59:23,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2025-03-17 05:59:23,726 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:59:23,726 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:23,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 05:59:23,726 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:59:23,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:59:23,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1035999142, now seen corresponding path program 1 times [2025-03-17 05:59:23,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:59:23,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35576704] [2025-03-17 05:59:23,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:59:23,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:59:23,748 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-03-17 05:59:23,759 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-03-17 05:59:23,759 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:59:23,759 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:59:23,813 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 05:59:23,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:59:23,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35576704] [2025-03-17 05:59:23,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35576704] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:59:23,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:59:23,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 05:59:23,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785781242] [2025-03-17 05:59:23,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:59:23,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 05:59:23,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:59:23,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 05:59:23,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 05:59:23,814 INFO L87 Difference]: Start difference. First operand 280 states and 424 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-17 05:59:23,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:59:23,889 INFO L93 Difference]: Finished difference Result 563 states and 855 transitions. [2025-03-17 05:59:23,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 05:59:23,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 148 [2025-03-17 05:59:23,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:59:23,891 INFO L225 Difference]: With dead ends: 563 [2025-03-17 05:59:23,891 INFO L226 Difference]: Without dead ends: 284 [2025-03-17 05:59:23,891 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 05:59:23,892 INFO L435 NwaCegarLoop]: 171 mSDtfsCounter, 0 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 05:59:23,892 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 330 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 05:59:23,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2025-03-17 05:59:23,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2025-03-17 05:59:23,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 243 states have (on average 1.448559670781893) internal successors, (352), 243 states have internal predecessors, (352), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2025-03-17 05:59:23,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 428 transitions. [2025-03-17 05:59:23,904 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 428 transitions. Word has length 148 [2025-03-17 05:59:23,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:59:23,904 INFO L471 AbstractCegarLoop]: Abstraction has 284 states and 428 transitions. [2025-03-17 05:59:23,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-17 05:59:23,904 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 428 transitions. [2025-03-17 05:59:23,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2025-03-17 05:59:23,905 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:59:23,905 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:23,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 05:59:23,906 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:59:23,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:59:23,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1202711882, now seen corresponding path program 1 times [2025-03-17 05:59:23,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:59:23,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994386888] [2025-03-17 05:59:23,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:59:23,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:59:23,927 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-03-17 05:59:23,939 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-03-17 05:59:23,939 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:59:23,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:59:24,013 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 05:59:24,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:59:24,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994386888] [2025-03-17 05:59:24,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994386888] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:59:24,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:59:24,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 05:59:24,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944456635] [2025-03-17 05:59:24,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:59:24,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 05:59:24,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:59:24,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 05:59:24,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 05:59:24,015 INFO L87 Difference]: Start difference. First operand 284 states and 428 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-17 05:59:24,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:59:24,087 INFO L93 Difference]: Finished difference Result 567 states and 855 transitions. [2025-03-17 05:59:24,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 05:59:24,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 148 [2025-03-17 05:59:24,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:59:24,090 INFO L225 Difference]: With dead ends: 567 [2025-03-17 05:59:24,091 INFO L226 Difference]: Without dead ends: 284 [2025-03-17 05:59:24,092 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 05:59:24,094 INFO L435 NwaCegarLoop]: 171 mSDtfsCounter, 0 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 05:59:24,094 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 331 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 05:59:24,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2025-03-17 05:59:24,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2025-03-17 05:59:24,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 243 states have (on average 1.440329218106996) internal successors, (350), 243 states have internal predecessors, (350), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2025-03-17 05:59:24,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 426 transitions. [2025-03-17 05:59:24,106 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 426 transitions. Word has length 148 [2025-03-17 05:59:24,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:59:24,106 INFO L471 AbstractCegarLoop]: Abstraction has 284 states and 426 transitions. [2025-03-17 05:59:24,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-17 05:59:24,106 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 426 transitions. [2025-03-17 05:59:24,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-17 05:59:24,107 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:59:24,108 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:24,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 05:59:24,108 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:59:24,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:59:24,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1919854333, now seen corresponding path program 1 times [2025-03-17 05:59:24,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:59:24,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039985873] [2025-03-17 05:59:24,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:59:24,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:59:24,129 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:59:24,141 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:59:24,141 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:59:24,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:59:24,470 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 05:59:24,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:59:24,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039985873] [2025-03-17 05:59:24,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039985873] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:59:24,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:59:24,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 05:59:24,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14783097] [2025-03-17 05:59:24,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:59:24,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 05:59:24,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:59:24,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 05:59:24,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 05:59:24,472 INFO L87 Difference]: Start difference. First operand 284 states and 426 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-17 05:59:24,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:59:24,839 INFO L93 Difference]: Finished difference Result 681 states and 1026 transitions. [2025-03-17 05:59:24,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 05:59:24,841 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 149 [2025-03-17 05:59:24,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:59:24,843 INFO L225 Difference]: With dead ends: 681 [2025-03-17 05:59:24,843 INFO L226 Difference]: Without dead ends: 398 [2025-03-17 05:59:24,843 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 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 05:59:24,844 INFO L435 NwaCegarLoop]: 202 mSDtfsCounter, 77 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 05:59:24,844 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 605 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 05:59:24,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2025-03-17 05:59:24,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 316. [2025-03-17 05:59:24,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 275 states have (on average 1.461818181818182) internal successors, (402), 275 states have internal predecessors, (402), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2025-03-17 05:59:24,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 478 transitions. [2025-03-17 05:59:24,857 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 478 transitions. Word has length 149 [2025-03-17 05:59:24,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:59:24,857 INFO L471 AbstractCegarLoop]: Abstraction has 316 states and 478 transitions. [2025-03-17 05:59:24,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-17 05:59:24,857 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 478 transitions. [2025-03-17 05:59:24,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-17 05:59:24,858 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:59:24,859 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:24,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 05:59:24,859 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:59:24,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:59:24,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1929404265, now seen corresponding path program 1 times [2025-03-17 05:59:24,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:59:24,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015971286] [2025-03-17 05:59:24,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:59:24,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:59:24,891 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:59:24,978 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:59:24,979 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:59:24,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:59:27,361 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 05:59:27,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:59:27,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015971286] [2025-03-17 05:59:27,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015971286] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:59:27,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:59:27,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-17 05:59:27,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037988799] [2025-03-17 05:59:27,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:59:27,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 05:59:27,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:59:27,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 05:59:27,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2025-03-17 05:59:27,364 INFO L87 Difference]: Start difference. First operand 316 states and 478 transitions. Second operand has 14 states, 11 states have (on average 5.181818181818182) internal successors, (57), 14 states have internal predecessors, (57), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) [2025-03-17 05:59:29,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:59:29,650 INFO L93 Difference]: Finished difference Result 910 states and 1372 transitions. [2025-03-17 05:59:29,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-17 05:59:29,650 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 5.181818181818182) internal successors, (57), 14 states have internal predecessors, (57), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) Word has length 149 [2025-03-17 05:59:29,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:59:29,653 INFO L225 Difference]: With dead ends: 910 [2025-03-17 05:59:29,653 INFO L226 Difference]: Without dead ends: 595 [2025-03-17 05:59:29,654 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2025-03-17 05:59:29,655 INFO L435 NwaCegarLoop]: 161 mSDtfsCounter, 661 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 2444 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 2547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 2444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-17 05:59:29,656 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 1472 Invalid, 2547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 2444 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-17 05:59:29,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2025-03-17 05:59:29,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 360. [2025-03-17 05:59:29,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 319 states have (on average 1.4827586206896552) internal successors, (473), 319 states have internal predecessors, (473), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2025-03-17 05:59:29,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 549 transitions. [2025-03-17 05:59:29,676 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 549 transitions. Word has length 149 [2025-03-17 05:59:29,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:59:29,676 INFO L471 AbstractCegarLoop]: Abstraction has 360 states and 549 transitions. [2025-03-17 05:59:29,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 5.181818181818182) internal successors, (57), 14 states have internal predecessors, (57), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) [2025-03-17 05:59:29,677 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 549 transitions. [2025-03-17 05:59:29,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-17 05:59:29,678 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:59:29,678 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:29,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 05:59:29,678 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:59:29,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:59:29,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1636001258, now seen corresponding path program 1 times [2025-03-17 05:59:29,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:59:29,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456383280] [2025-03-17 05:59:29,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:59:29,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:59:29,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:59:29,747 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:59:29,748 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:59:29,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:59:31,463 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 05:59:31,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:59:31,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456383280] [2025-03-17 05:59:31,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456383280] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:59:31,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:59:31,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-17 05:59:31,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567551202] [2025-03-17 05:59:31,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:59:31,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 05:59:31,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:59:31,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 05:59:31,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2025-03-17 05:59:31,465 INFO L87 Difference]: Start difference. First operand 360 states and 549 transitions. Second operand has 12 states, 10 states have (on average 5.7) internal successors, (57), 12 states have internal predecessors, (57), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-17 05:59:32,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:59:32,816 INFO L93 Difference]: Finished difference Result 999 states and 1511 transitions. [2025-03-17 05:59:32,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-17 05:59:32,816 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 5.7) internal successors, (57), 12 states have internal predecessors, (57), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) Word has length 149 [2025-03-17 05:59:32,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:59:32,820 INFO L225 Difference]: With dead ends: 999 [2025-03-17 05:59:32,820 INFO L226 Difference]: Without dead ends: 640 [2025-03-17 05:59:32,823 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2025-03-17 05:59:32,823 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 797 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 1466 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 1574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-17 05:59:32,824 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 1036 Invalid, 1574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1466 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-17 05:59:32,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2025-03-17 05:59:32,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 399. [2025-03-17 05:59:32,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 358 states have (on average 1.488826815642458) internal successors, (533), 358 states have internal predecessors, (533), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2025-03-17 05:59:32,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 609 transitions. [2025-03-17 05:59:32,846 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 609 transitions. Word has length 149 [2025-03-17 05:59:32,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:59:32,848 INFO L471 AbstractCegarLoop]: Abstraction has 399 states and 609 transitions. [2025-03-17 05:59:32,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 5.7) internal successors, (57), 12 states have internal predecessors, (57), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-17 05:59:32,848 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 609 transitions. [2025-03-17 05:59:32,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-17 05:59:32,850 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:59:32,850 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:32,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 05:59:32,850 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:59:32,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:59:32,851 INFO L85 PathProgramCache]: Analyzing trace with hash 2090716411, now seen corresponding path program 1 times [2025-03-17 05:59:32,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:59:32,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651319536] [2025-03-17 05:59:32,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:59:32,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:59:32,874 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:59:32,883 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:59:32,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:59:32,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:59:33,001 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 12 proven. 42 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2025-03-17 05:59:33,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:59:33,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651319536] [2025-03-17 05:59:33,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651319536] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 05:59:33,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911943236] [2025-03-17 05:59:33,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:59:33,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:59:33,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:59:33,005 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 05:59:33,006 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 05:59:33,129 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:59:33,179 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:59:33,179 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:59:33,179 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:59:33,182 INFO L256 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 05:59:33,186 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:59:33,217 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 05:59:33,218 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 05:59:33,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911943236] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:59:33,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 05:59:33,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2025-03-17 05:59:33,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234072631] [2025-03-17 05:59:33,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:59:33,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 05:59:33,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:59:33,218 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 05:59:33,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-17 05:59:33,219 INFO L87 Difference]: Start difference. First operand 399 states and 609 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-17 05:59:33,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:59:33,250 INFO L93 Difference]: Finished difference Result 803 states and 1225 transitions. [2025-03-17 05:59:33,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 05:59:33,251 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 149 [2025-03-17 05:59:33,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:59:33,253 INFO L225 Difference]: With dead ends: 803 [2025-03-17 05:59:33,255 INFO L226 Difference]: Without dead ends: 405 [2025-03-17 05:59:33,255 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 150 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 05:59:33,256 INFO L435 NwaCegarLoop]: 169 mSDtfsCounter, 0 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 05:59:33,256 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 659 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 05:59:33,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2025-03-17 05:59:33,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2025-03-17 05:59:33,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 364 states have (on average 1.4807692307692308) internal successors, (539), 364 states have internal predecessors, (539), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2025-03-17 05:59:33,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 615 transitions. [2025-03-17 05:59:33,272 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 615 transitions. Word has length 149 [2025-03-17 05:59:33,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:59:33,272 INFO L471 AbstractCegarLoop]: Abstraction has 405 states and 615 transitions. [2025-03-17 05:59:33,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-17 05:59:33,272 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 615 transitions. [2025-03-17 05:59:33,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-17 05:59:33,273 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:59:33,274 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:33,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 05:59:33,474 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,SelfDestructingSolverStorable8 [2025-03-17 05:59:33,475 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:59:33,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:59:33,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1970443971, now seen corresponding path program 1 times [2025-03-17 05:59:33,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:59:33,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955763701] [2025-03-17 05:59:33,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:59:33,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:59:33,498 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:59:33,552 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:59:33,553 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:59:33,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:59:35,463 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 05:59:35,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:59:35,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955763701] [2025-03-17 05:59:35,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955763701] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:59:35,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:59:35,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-17 05:59:35,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713193324] [2025-03-17 05:59:35,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:59:35,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 05:59:35,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:59:35,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 05:59:35,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-03-17 05:59:35,465 INFO L87 Difference]: Start difference. First operand 405 states and 615 transitions. Second operand has 13 states, 11 states have (on average 5.181818181818182) internal successors, (57), 13 states have internal predecessors, (57), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-17 05:59:37,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:59:37,544 INFO L93 Difference]: Finished difference Result 1059 states and 1586 transitions. [2025-03-17 05:59:37,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-17 05:59:37,544 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.181818181818182) internal successors, (57), 13 states have internal predecessors, (57), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) Word has length 149 [2025-03-17 05:59:37,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:59:37,547 INFO L225 Difference]: With dead ends: 1059 [2025-03-17 05:59:37,547 INFO L226 Difference]: Without dead ends: 655 [2025-03-17 05:59:37,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=137, Invalid=565, Unknown=0, NotChecked=0, Total=702 [2025-03-17 05:59:37,549 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 796 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 1733 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 1843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-17 05:59:37,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 1135 Invalid, 1843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1733 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-17 05:59:37,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2025-03-17 05:59:37,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 407. [2025-03-17 05:59:37,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 366 states have (on average 1.4781420765027322) internal successors, (541), 366 states have internal predecessors, (541), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2025-03-17 05:59:37,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 617 transitions. [2025-03-17 05:59:37,566 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 617 transitions. Word has length 149 [2025-03-17 05:59:37,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:59:37,567 INFO L471 AbstractCegarLoop]: Abstraction has 407 states and 617 transitions. [2025-03-17 05:59:37,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.181818181818182) internal successors, (57), 13 states have internal predecessors, (57), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-17 05:59:37,567 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 617 transitions. [2025-03-17 05:59:37,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-17 05:59:37,569 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:59:37,569 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:37,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 05:59:37,569 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:59:37,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:59:37,570 INFO L85 PathProgramCache]: Analyzing trace with hash -986838244, now seen corresponding path program 1 times [2025-03-17 05:59:37,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:59:37,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951852210] [2025-03-17 05:59:37,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:59:37,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:59:37,593 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:59:37,602 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:59:37,602 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:59:37,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:59:37,772 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 05:59:37,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:59:37,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951852210] [2025-03-17 05:59:37,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951852210] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:59:37,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:59:37,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 05:59:37,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876741145] [2025-03-17 05:59:37,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:59:37,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 05:59:37,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:59:37,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 05:59:37,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 05:59:37,774 INFO L87 Difference]: Start difference. First operand 407 states and 617 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-17 05:59:38,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:59:38,038 INFO L93 Difference]: Finished difference Result 877 states and 1324 transitions. [2025-03-17 05:59:38,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 05:59:38,038 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 149 [2025-03-17 05:59:38,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:59:38,041 INFO L225 Difference]: With dead ends: 877 [2025-03-17 05:59:38,041 INFO L226 Difference]: Without dead ends: 471 [2025-03-17 05:59:38,041 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 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 05:59:38,042 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 72 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 05:59:38,042 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 412 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 05:59:38,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2025-03-17 05:59:38,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 395. [2025-03-17 05:59:38,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 354 states have (on average 1.4548022598870056) internal successors, (515), 354 states have internal predecessors, (515), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2025-03-17 05:59:38,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 591 transitions. [2025-03-17 05:59:38,052 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 591 transitions. Word has length 149 [2025-03-17 05:59:38,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:59:38,052 INFO L471 AbstractCegarLoop]: Abstraction has 395 states and 591 transitions. [2025-03-17 05:59:38,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-17 05:59:38,053 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 591 transitions. [2025-03-17 05:59:38,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-17 05:59:38,054 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:59:38,054 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:38,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 05:59:38,054 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:59:38,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:59:38,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1674667720, now seen corresponding path program 1 times [2025-03-17 05:59:38,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:59:38,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205555177] [2025-03-17 05:59:38,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:59:38,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:59:38,073 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:59:38,094 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:59:38,095 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:59:38,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:59:38,504 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 05:59:38,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:59:38,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205555177] [2025-03-17 05:59:38,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205555177] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:59:38,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:59:38,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 05:59:38,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675346652] [2025-03-17 05:59:38,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:59:38,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 05:59:38,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:59:38,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 05:59:38,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 05:59:38,505 INFO L87 Difference]: Start difference. First operand 395 states and 591 transitions. Second operand has 6 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-17 05:59:38,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:59:38,872 INFO L93 Difference]: Finished difference Result 916 states and 1359 transitions. [2025-03-17 05:59:38,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 05:59:38,872 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 149 [2025-03-17 05:59:38,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:59:38,875 INFO L225 Difference]: With dead ends: 916 [2025-03-17 05:59:38,875 INFO L226 Difference]: Without dead ends: 522 [2025-03-17 05:59:38,876 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-17 05:59:38,876 INFO L435 NwaCegarLoop]: 191 mSDtfsCounter, 89 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 05:59:38,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 692 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 05:59:38,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2025-03-17 05:59:38,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 518. [2025-03-17 05:59:38,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 467 states have (on average 1.4389721627408993) internal successors, (672), 469 states have internal predecessors, (672), 46 states have call successors, (46), 4 states have call predecessors, (46), 4 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2025-03-17 05:59:38,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 764 transitions. [2025-03-17 05:59:38,894 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 764 transitions. Word has length 149 [2025-03-17 05:59:38,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:59:38,894 INFO L471 AbstractCegarLoop]: Abstraction has 518 states and 764 transitions. [2025-03-17 05:59:38,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-17 05:59:38,894 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 764 transitions. [2025-03-17 05:59:38,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-17 05:59:38,896 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:59:38,896 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:38,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-17 05:59:38,897 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:59:38,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:59:38,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1705687527, now seen corresponding path program 1 times [2025-03-17 05:59:38,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:59:38,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648146237] [2025-03-17 05:59:38,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:59:38,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:59:38,919 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:59:38,951 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:59:38,951 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:59:38,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:59:40,275 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 05:59:40,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:59:40,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648146237] [2025-03-17 05:59:40,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648146237] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:59:40,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:59:40,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-17 05:59:40,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739212311] [2025-03-17 05:59:40,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:59:40,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 05:59:40,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:59:40,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 05:59:40,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2025-03-17 05:59:40,276 INFO L87 Difference]: Start difference. First operand 518 states and 764 transitions. Second operand has 12 states, 10 states have (on average 5.7) internal successors, (57), 12 states have internal predecessors, (57), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-17 05:59:41,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:59:41,569 INFO L93 Difference]: Finished difference Result 1226 states and 1797 transitions. [2025-03-17 05:59:41,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-17 05:59:41,569 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 5.7) internal successors, (57), 12 states have internal predecessors, (57), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) Word has length 149 [2025-03-17 05:59:41,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:59:41,572 INFO L225 Difference]: With dead ends: 1226 [2025-03-17 05:59:41,572 INFO L226 Difference]: Without dead ends: 709 [2025-03-17 05:59:41,574 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2025-03-17 05:59:41,575 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 469 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 1811 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 1906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-17 05:59:41,575 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 1312 Invalid, 1906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1811 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-17 05:59:41,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2025-03-17 05:59:41,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 534. [2025-03-17 05:59:41,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 483 states have (on average 1.4368530020703933) internal successors, (694), 485 states have internal predecessors, (694), 46 states have call successors, (46), 4 states have call predecessors, (46), 4 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2025-03-17 05:59:41,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 786 transitions. [2025-03-17 05:59:41,593 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 786 transitions. Word has length 149 [2025-03-17 05:59:41,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:59:41,594 INFO L471 AbstractCegarLoop]: Abstraction has 534 states and 786 transitions. [2025-03-17 05:59:41,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 5.7) internal successors, (57), 12 states have internal predecessors, (57), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-17 05:59:41,594 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 786 transitions. [2025-03-17 05:59:41,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-17 05:59:41,596 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:59:41,596 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:41,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-17 05:59:41,596 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:59:41,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:59:41,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1412284520, now seen corresponding path program 1 times [2025-03-17 05:59:41,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:59:41,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060400012] [2025-03-17 05:59:41,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:59:41,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:59:41,617 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:59:41,643 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:59:41,644 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:59:41,644 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:59:43,227 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 05:59:43,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:59:43,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060400012] [2025-03-17 05:59:43,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060400012] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:59:43,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:59:43,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-17 05:59:43,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436591470] [2025-03-17 05:59:43,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:59:43,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 05:59:43,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:59:43,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 05:59:43,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2025-03-17 05:59:43,229 INFO L87 Difference]: Start difference. First operand 534 states and 786 transitions. Second operand has 14 states, 12 states have (on average 4.75) internal successors, (57), 14 states have internal predecessors, (57), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-17 05:59:45,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:59:45,319 INFO L93 Difference]: Finished difference Result 1312 states and 1915 transitions. [2025-03-17 05:59:45,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-17 05:59:45,320 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 4.75) internal successors, (57), 14 states have internal predecessors, (57), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) Word has length 149 [2025-03-17 05:59:45,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:59:45,323 INFO L225 Difference]: With dead ends: 1312 [2025-03-17 05:59:45,323 INFO L226 Difference]: Without dead ends: 779 [2025-03-17 05:59:45,324 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=159, Invalid=597, Unknown=0, NotChecked=0, Total=756 [2025-03-17 05:59:45,325 INFO L435 NwaCegarLoop]: 204 mSDtfsCounter, 601 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 2292 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 2395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 2292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-17 05:59:45,325 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [601 Valid, 1694 Invalid, 2395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 2292 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-17 05:59:45,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2025-03-17 05:59:45,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 535. [2025-03-17 05:59:45,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 484 states have (on average 1.4338842975206612) internal successors, (694), 486 states have internal predecessors, (694), 46 states have call successors, (46), 4 states have call predecessors, (46), 4 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2025-03-17 05:59:45,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 786 transitions. [2025-03-17 05:59:45,342 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 786 transitions. Word has length 149 [2025-03-17 05:59:45,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:59:45,342 INFO L471 AbstractCegarLoop]: Abstraction has 535 states and 786 transitions. [2025-03-17 05:59:45,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 4.75) internal successors, (57), 14 states have internal predecessors, (57), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-17 05:59:45,342 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 786 transitions. [2025-03-17 05:59:45,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-17 05:59:45,344 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:59:45,344 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:45,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-17 05:59:45,345 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:59:45,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:59:45,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1071708061, now seen corresponding path program 1 times [2025-03-17 05:59:45,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:59:45,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214286785] [2025-03-17 05:59:45,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:59:45,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:59:45,369 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:59:45,385 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:59:45,385 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:59:45,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:59:45,514 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 05:59:45,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:59:45,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214286785] [2025-03-17 05:59:45,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214286785] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:59:45,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:59:45,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 05:59:45,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44596460] [2025-03-17 05:59:45,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:59:45,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 05:59:45,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:59:45,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 05:59:45,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 05:59:45,516 INFO L87 Difference]: Start difference. First operand 535 states and 786 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-17 05:59:45,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:59:45,791 INFO L93 Difference]: Finished difference Result 1214 states and 1772 transitions. [2025-03-17 05:59:45,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 05:59:45,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 149 [2025-03-17 05:59:45,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:59:45,794 INFO L225 Difference]: With dead ends: 1214 [2025-03-17 05:59:45,794 INFO L226 Difference]: Without dead ends: 680 [2025-03-17 05:59:45,795 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 05:59:45,795 INFO L435 NwaCegarLoop]: 183 mSDtfsCounter, 61 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 05:59:45,795 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 555 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 05:59:45,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2025-03-17 05:59:45,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 538. [2025-03-17 05:59:45,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 487 states have (on average 1.433264887063655) internal successors, (698), 489 states have internal predecessors, (698), 46 states have call successors, (46), 4 states have call predecessors, (46), 4 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2025-03-17 05:59:45,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 790 transitions. [2025-03-17 05:59:45,812 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 790 transitions. Word has length 149 [2025-03-17 05:59:45,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:59:45,812 INFO L471 AbstractCegarLoop]: Abstraction has 538 states and 790 transitions. [2025-03-17 05:59:45,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-17 05:59:45,813 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 790 transitions. [2025-03-17 05:59:45,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-17 05:59:45,814 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:59:45,814 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:45,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-17 05:59:45,815 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:59:45,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:59:45,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1365111068, now seen corresponding path program 1 times [2025-03-17 05:59:45,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:59:45,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132074738] [2025-03-17 05:59:45,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:59:45,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:59:45,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-17 05:59:45,862 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-17 05:59:45,863 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:59:45,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:59:46,855 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 05:59:46,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:59:46,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132074738] [2025-03-17 05:59:46,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132074738] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:59:46,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:59:46,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 05:59:46,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729681867] [2025-03-17 05:59:46,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:59:46,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-17 05:59:46,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:59:46,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-17 05:59:46,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-17 05:59:46,857 INFO L87 Difference]: Start difference. First operand 538 states and 790 transitions. Second operand has 10 states, 7 states have (on average 8.142857142857142) internal successors, (57), 10 states have internal predecessors, (57), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) [2025-03-17 05:59:47,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:59:47,675 INFO L93 Difference]: Finished difference Result 1164 states and 1708 transitions. [2025-03-17 05:59:47,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 05:59:47,675 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 8.142857142857142) internal successors, (57), 10 states have internal predecessors, (57), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) Word has length 149 [2025-03-17 05:59:47,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:59:47,677 INFO L225 Difference]: With dead ends: 1164 [2025-03-17 05:59:47,678 INFO L226 Difference]: Without dead ends: 627 [2025-03-17 05:59:47,679 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-17 05:59:47,680 INFO L435 NwaCegarLoop]: 204 mSDtfsCounter, 66 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-17 05:59:47,680 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 1141 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-17 05:59:47,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2025-03-17 05:59:47,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 558. [2025-03-17 05:59:47,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 507 states have (on average 1.4339250493096647) internal successors, (727), 509 states have internal predecessors, (727), 46 states have call successors, (46), 4 states have call predecessors, (46), 4 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2025-03-17 05:59:47,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 819 transitions. [2025-03-17 05:59:47,698 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 819 transitions. Word has length 149 [2025-03-17 05:59:47,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:59:47,710 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 819 transitions. [2025-03-17 05:59:47,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 8.142857142857142) internal successors, (57), 10 states have internal predecessors, (57), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) [2025-03-17 05:59:47,710 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 819 transitions. [2025-03-17 05:59:47,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2025-03-17 05:59:47,711 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:59:47,711 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:47,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-17 05:59:47,711 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:59:47,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:59:47,711 INFO L85 PathProgramCache]: Analyzing trace with hash 229538547, now seen corresponding path program 1 times [2025-03-17 05:59:47,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:59:47,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573051132] [2025-03-17 05:59:47,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:59:47,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:59:47,732 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-03-17 05:59:47,746 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-03-17 05:59:47,746 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:59:47,746 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:59:47,772 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 05:59:47,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:59:47,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573051132] [2025-03-17 05:59:47,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573051132] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:59:47,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:59:47,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 05:59:47,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399789365] [2025-03-17 05:59:47,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:59:47,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 05:59:47,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:59:47,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 05:59:47,775 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 05:59:47,775 INFO L87 Difference]: Start difference. First operand 558 states and 819 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-17 05:59:47,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:59:47,840 INFO L93 Difference]: Finished difference Result 1112 states and 1631 transitions. [2025-03-17 05:59:47,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 05:59:47,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 150 [2025-03-17 05:59:47,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:59:47,843 INFO L225 Difference]: With dead ends: 1112 [2025-03-17 05:59:47,843 INFO L226 Difference]: Without dead ends: 555 [2025-03-17 05:59:47,844 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 05:59:47,844 INFO L435 NwaCegarLoop]: 171 mSDtfsCounter, 0 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 05:59:47,845 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 330 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 05:59:47,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2025-03-17 05:59:47,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 555. [2025-03-17 05:59:47,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 504 states have (on average 1.4265873015873016) internal successors, (719), 506 states have internal predecessors, (719), 46 states have call successors, (46), 4 states have call predecessors, (46), 4 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2025-03-17 05:59:47,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 811 transitions. [2025-03-17 05:59:47,859 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 811 transitions. Word has length 150 [2025-03-17 05:59:47,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:59:47,859 INFO L471 AbstractCegarLoop]: Abstraction has 555 states and 811 transitions. [2025-03-17 05:59:47,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-17 05:59:47,859 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 811 transitions. [2025-03-17 05:59:47,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-17 05:59:47,860 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:59:47,860 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:47,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-17 05:59:47,861 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:59:47,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:59:47,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1770308199, now seen corresponding path program 1 times [2025-03-17 05:59:47,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:59:47,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253293966] [2025-03-17 05:59:47,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:59:47,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:59:47,882 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-17 05:59:47,906 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-17 05:59:47,907 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:59:47,907 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:59:48,923 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 05:59:48,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:59:48,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253293966] [2025-03-17 05:59:48,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253293966] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:59:48,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:59:48,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2025-03-17 05:59:48,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440539858] [2025-03-17 05:59:48,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:59:48,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-17 05:59:48,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:59:48,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-17 05:59:48,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2025-03-17 05:59:48,925 INFO L87 Difference]: Start difference. First operand 555 states and 811 transitions. Second operand has 15 states, 13 states have (on average 4.538461538461538) internal successors, (59), 15 states have internal predecessors, (59), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-17 05:59:50,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:59:50,048 INFO L93 Difference]: Finished difference Result 1263 states and 1838 transitions. [2025-03-17 05:59:50,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 05:59:50,049 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.538461538461538) internal successors, (59), 15 states have internal predecessors, (59), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) Word has length 151 [2025-03-17 05:59:50,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:59:50,051 INFO L225 Difference]: With dead ends: 1263 [2025-03-17 05:59:50,051 INFO L226 Difference]: Without dead ends: 709 [2025-03-17 05:59:50,052 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2025-03-17 05:59:50,052 INFO L435 NwaCegarLoop]: 179 mSDtfsCounter, 87 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 1358 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-17 05:59:50,053 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 1636 Invalid, 1364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1358 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-17 05:59:50,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2025-03-17 05:59:50,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 611. [2025-03-17 05:59:50,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 560 states have (on average 1.4339285714285714) internal successors, (803), 562 states have internal predecessors, (803), 46 states have call successors, (46), 4 states have call predecessors, (46), 4 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2025-03-17 05:59:50,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 895 transitions. [2025-03-17 05:59:50,072 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 895 transitions. Word has length 151 [2025-03-17 05:59:50,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:59:50,072 INFO L471 AbstractCegarLoop]: Abstraction has 611 states and 895 transitions. [2025-03-17 05:59:50,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.538461538461538) internal successors, (59), 15 states have internal predecessors, (59), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-17 05:59:50,072 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 895 transitions. [2025-03-17 05:59:50,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-17 05:59:50,073 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:59:50,073 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:50,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-17 05:59:50,073 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:59:50,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:59:50,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1641225480, now seen corresponding path program 1 times [2025-03-17 05:59:50,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:59:50,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257069738] [2025-03-17 05:59:50,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:59:50,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:59:50,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-17 05:59:50,116 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-17 05:59:50,116 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:59:50,116 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:59:50,807 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 05:59:50,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:59:50,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257069738] [2025-03-17 05:59:50,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257069738] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:59:50,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:59:50,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 05:59:50,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289518897] [2025-03-17 05:59:50,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:59:50,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 05:59:50,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:59:50,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 05:59:50,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-17 05:59:50,808 INFO L87 Difference]: Start difference. First operand 611 states and 895 transitions. Second operand has 7 states, 5 states have (on average 11.8) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-17 05:59:51,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:59:51,359 INFO L93 Difference]: Finished difference Result 1455 states and 2118 transitions. [2025-03-17 05:59:51,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 05:59:51,360 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 11.8) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) Word has length 151 [2025-03-17 05:59:51,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:59:51,363 INFO L225 Difference]: With dead ends: 1455 [2025-03-17 05:59:51,363 INFO L226 Difference]: Without dead ends: 845 [2025-03-17 05:59:51,364 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-17 05:59:51,364 INFO L435 NwaCegarLoop]: 189 mSDtfsCounter, 78 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 05:59:51,365 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 787 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 05:59:51,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2025-03-17 05:59:51,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 841. [2025-03-17 05:59:51,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 766 states have (on average 1.4138381201044385) internal successors, (1083), 772 states have internal predecessors, (1083), 66 states have call successors, (66), 8 states have call predecessors, (66), 8 states have return successors, (66), 60 states have call predecessors, (66), 66 states have call successors, (66) [2025-03-17 05:59:51,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1215 transitions. [2025-03-17 05:59:51,394 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1215 transitions. Word has length 151 [2025-03-17 05:59:51,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:59:51,394 INFO L471 AbstractCegarLoop]: Abstraction has 841 states and 1215 transitions. [2025-03-17 05:59:51,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 11.8) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-17 05:59:51,394 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1215 transitions. [2025-03-17 05:59:51,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-17 05:59:51,395 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:59:51,395 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:51,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-17 05:59:51,396 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:59:51,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:59:51,396 INFO L85 PathProgramCache]: Analyzing trace with hash 2019100472, now seen corresponding path program 1 times [2025-03-17 05:59:51,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:59:51,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829008875] [2025-03-17 05:59:51,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:59:51,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:59:51,414 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-17 05:59:51,431 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-17 05:59:51,431 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:59:51,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:59:52,135 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 05:59:52,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:59:52,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829008875] [2025-03-17 05:59:52,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829008875] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:59:52,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:59:52,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 05:59:52,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279214194] [2025-03-17 05:59:52,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:59:52,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 05:59:52,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:59:52,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 05:59:52,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 05:59:52,136 INFO L87 Difference]: Start difference. First operand 841 states and 1215 transitions. Second operand has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-17 05:59:52,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:59:52,526 INFO L93 Difference]: Finished difference Result 1783 states and 2580 transitions. [2025-03-17 05:59:52,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 05:59:52,527 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 151 [2025-03-17 05:59:52,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:59:52,531 INFO L225 Difference]: With dead ends: 1783 [2025-03-17 05:59:52,533 INFO L226 Difference]: Without dead ends: 943 [2025-03-17 05:59:52,534 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-17 05:59:52,534 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 63 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 05:59:52,534 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 644 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 05:59:52,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2025-03-17 05:59:52,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 871. [2025-03-17 05:59:52,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 796 states have (on average 1.4183417085427135) internal successors, (1129), 802 states have internal predecessors, (1129), 66 states have call successors, (66), 8 states have call predecessors, (66), 8 states have return successors, (66), 60 states have call predecessors, (66), 66 states have call successors, (66) [2025-03-17 05:59:52,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 1261 transitions. [2025-03-17 05:59:52,562 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 1261 transitions. Word has length 151 [2025-03-17 05:59:52,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:59:52,562 INFO L471 AbstractCegarLoop]: Abstraction has 871 states and 1261 transitions. [2025-03-17 05:59:52,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-17 05:59:52,562 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 1261 transitions. [2025-03-17 05:59:52,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-17 05:59:52,563 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:59:52,563 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:52,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-17 05:59:52,564 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:59:52,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:59:52,564 INFO L85 PathProgramCache]: Analyzing trace with hash -808694182, now seen corresponding path program 1 times [2025-03-17 05:59:52,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:59:52,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25262223] [2025-03-17 05:59:52,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:59:52,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:59:52,586 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-17 05:59:52,604 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-17 05:59:52,604 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:59:52,604 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:59:53,285 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 05:59:53,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:59:53,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25262223] [2025-03-17 05:59:53,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25262223] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:59:53,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:59:53,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 05:59:53,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162162523] [2025-03-17 05:59:53,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:59:53,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 05:59:53,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:59:53,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 05:59:53,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-17 05:59:53,287 INFO L87 Difference]: Start difference. First operand 871 states and 1261 transitions. Second operand has 7 states, 5 states have (on average 11.8) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-17 05:59:53,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:59:53,748 INFO L93 Difference]: Finished difference Result 1839 states and 2656 transitions. [2025-03-17 05:59:53,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 05:59:53,749 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 11.8) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) Word has length 151 [2025-03-17 05:59:53,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:59:53,752 INFO L225 Difference]: With dead ends: 1839 [2025-03-17 05:59:53,752 INFO L226 Difference]: Without dead ends: 969 [2025-03-17 05:59:53,753 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-17 05:59:53,754 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 78 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 05:59:53,754 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 717 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 05:59:53,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2025-03-17 05:59:53,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 869. [2025-03-17 05:59:53,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 794 states have (on average 1.4168765743073048) internal successors, (1125), 800 states have internal predecessors, (1125), 66 states have call successors, (66), 8 states have call predecessors, (66), 8 states have return successors, (66), 60 states have call predecessors, (66), 66 states have call successors, (66) [2025-03-17 05:59:53,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1257 transitions. [2025-03-17 05:59:53,779 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1257 transitions. Word has length 151 [2025-03-17 05:59:53,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:59:53,779 INFO L471 AbstractCegarLoop]: Abstraction has 869 states and 1257 transitions. [2025-03-17 05:59:53,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 11.8) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-17 05:59:53,779 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1257 transitions. [2025-03-17 05:59:53,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-17 05:59:53,780 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:59:53,780 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:53,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-17 05:59:53,781 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:59:53,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:59:53,781 INFO L85 PathProgramCache]: Analyzing trace with hash -679611463, now seen corresponding path program 1 times [2025-03-17 05:59:53,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:59:53,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949885947] [2025-03-17 05:59:53,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:59:53,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:59:53,800 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-17 05:59:53,822 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-17 05:59:53,822 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:59:53,822 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:59:54,943 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 05:59:54,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:59:54,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949885947] [2025-03-17 05:59:54,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949885947] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:59:54,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:59:54,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2025-03-17 05:59:54,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919197123] [2025-03-17 05:59:54,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:59:54,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-17 05:59:54,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:59:54,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-17 05:59:54,945 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2025-03-17 05:59:54,945 INFO L87 Difference]: Start difference. First operand 869 states and 1257 transitions. Second operand has 16 states, 14 states have (on average 4.214285714285714) internal successors, (59), 16 states have internal predecessors, (59), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-17 05:59:56,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:59:56,157 INFO L93 Difference]: Finished difference Result 1833 states and 2642 transitions. [2025-03-17 05:59:56,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-17 05:59:56,160 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 4.214285714285714) internal successors, (59), 16 states have internal predecessors, (59), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) Word has length 151 [2025-03-17 05:59:56,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:59:56,163 INFO L225 Difference]: With dead ends: 1833 [2025-03-17 05:59:56,163 INFO L226 Difference]: Without dead ends: 965 [2025-03-17 05:59:56,164 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2025-03-17 05:59:56,165 INFO L435 NwaCegarLoop]: 208 mSDtfsCounter, 76 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 1695 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 2017 SdHoareTripleChecker+Invalid, 1701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-17 05:59:56,165 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 2017 Invalid, 1701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1695 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-17 05:59:56,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2025-03-17 05:59:56,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 873. [2025-03-17 05:59:56,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 798 states have (on average 1.4147869674185463) internal successors, (1129), 804 states have internal predecessors, (1129), 66 states have call successors, (66), 8 states have call predecessors, (66), 8 states have return successors, (66), 60 states have call predecessors, (66), 66 states have call successors, (66) [2025-03-17 05:59:56,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1261 transitions. [2025-03-17 05:59:56,192 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1261 transitions. Word has length 151 [2025-03-17 05:59:56,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:59:56,192 INFO L471 AbstractCegarLoop]: Abstraction has 873 states and 1261 transitions. [2025-03-17 05:59:56,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 4.214285714285714) internal successors, (59), 16 states have internal predecessors, (59), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-17 05:59:56,192 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1261 transitions. [2025-03-17 05:59:56,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-17 05:59:56,193 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:59:56,193 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:56,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-17 05:59:56,194 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:59:56,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:59:56,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1077206502, now seen corresponding path program 1 times [2025-03-17 05:59:56,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:59:56,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751177990] [2025-03-17 05:59:56,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:59:56,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:59:56,213 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-17 05:59:56,240 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-17 05:59:56,240 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:59:56,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:59:57,135 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 05:59:57,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:59:57,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751177990] [2025-03-17 05:59:57,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751177990] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:59:57,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:59:57,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 05:59:57,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359390523] [2025-03-17 05:59:57,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:59:57,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 05:59:57,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:59:57,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 05:59:57,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 05:59:57,137 INFO L87 Difference]: Start difference. First operand 873 states and 1261 transitions. Second operand has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-17 05:59:57,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:59:57,463 INFO L93 Difference]: Finished difference Result 1747 states and 2522 transitions. [2025-03-17 05:59:57,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 05:59:57,463 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 151 [2025-03-17 05:59:57,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:59:57,466 INFO L225 Difference]: With dead ends: 1747 [2025-03-17 05:59:57,466 INFO L226 Difference]: Without dead ends: 875 [2025-03-17 05:59:57,467 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-17 05:59:57,467 INFO L435 NwaCegarLoop]: 181 mSDtfsCounter, 63 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 05:59:57,467 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 665 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 05:59:57,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2025-03-17 05:59:57,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 873. [2025-03-17 05:59:57,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 798 states have (on average 1.4097744360902256) internal successors, (1125), 804 states have internal predecessors, (1125), 66 states have call successors, (66), 8 states have call predecessors, (66), 8 states have return successors, (66), 60 states have call predecessors, (66), 66 states have call successors, (66) [2025-03-17 05:59:57,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1257 transitions. [2025-03-17 05:59:57,491 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1257 transitions. Word has length 151 [2025-03-17 05:59:57,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:59:57,492 INFO L471 AbstractCegarLoop]: Abstraction has 873 states and 1257 transitions. [2025-03-17 05:59:57,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-17 05:59:57,492 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1257 transitions. [2025-03-17 05:59:57,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-17 05:59:57,493 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:59:57,493 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:57,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-17 05:59:57,493 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:59:57,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:59:57,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1582765127, now seen corresponding path program 1 times [2025-03-17 05:59:57,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:59:57,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033597949] [2025-03-17 05:59:57,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:59:57,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:59:57,514 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-17 05:59:57,546 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-17 05:59:57,547 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:59:57,547 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:59:58,668 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 05:59:58,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:59:58,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033597949] [2025-03-17 05:59:58,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033597949] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:59:58,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:59:58,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-17 05:59:58,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926255764] [2025-03-17 05:59:58,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:59:58,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 05:59:58,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:59:58,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 05:59:58,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2025-03-17 05:59:58,670 INFO L87 Difference]: Start difference. First operand 873 states and 1257 transitions. Second operand has 14 states, 13 states have (on average 4.538461538461538) internal successors, (59), 14 states have internal predecessors, (59), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-17 05:59:59,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:59:59,568 INFO L93 Difference]: Finished difference Result 1813 states and 2608 transitions. [2025-03-17 05:59:59,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-17 05:59:59,573 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.538461538461538) internal successors, (59), 14 states have internal predecessors, (59), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 151 [2025-03-17 05:59:59,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:59:59,576 INFO L225 Difference]: With dead ends: 1813 [2025-03-17 05:59:59,576 INFO L226 Difference]: Without dead ends: 941 [2025-03-17 05:59:59,577 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2025-03-17 05:59:59,577 INFO L435 NwaCegarLoop]: 203 mSDtfsCounter, 63 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 1241 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 1721 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-17 05:59:59,577 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 1721 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1241 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-17 05:59:59,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2025-03-17 05:59:59,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 879. [2025-03-17 05:59:59,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 804 states have (on average 1.4067164179104477) internal successors, (1131), 810 states have internal predecessors, (1131), 66 states have call successors, (66), 8 states have call predecessors, (66), 8 states have return successors, (66), 60 states have call predecessors, (66), 66 states have call successors, (66) [2025-03-17 05:59:59,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1263 transitions. [2025-03-17 05:59:59,601 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1263 transitions. Word has length 151 [2025-03-17 05:59:59,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:59:59,601 INFO L471 AbstractCegarLoop]: Abstraction has 879 states and 1263 transitions. [2025-03-17 05:59:59,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.538461538461538) internal successors, (59), 14 states have internal predecessors, (59), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-17 05:59:59,602 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1263 transitions. [2025-03-17 05:59:59,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-17 05:59:59,603 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:59:59,603 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:59,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-03-17 05:59:59,603 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:59:59,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:59:59,603 INFO L85 PathProgramCache]: Analyzing trace with hash -492068391, now seen corresponding path program 1 times [2025-03-17 05:59:59,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:59:59,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748423217] [2025-03-17 05:59:59,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:59:59,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:59:59,624 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-17 05:59:59,647 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-17 05:59:59,647 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:59:59,647 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:00:00,764 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 06:00:00,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:00:00,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748423217] [2025-03-17 06:00:00,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748423217] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:00:00,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:00:00,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-17 06:00:00,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144758481] [2025-03-17 06:00:00,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:00:00,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 06:00:00,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:00:00,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 06:00:00,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2025-03-17 06:00:00,766 INFO L87 Difference]: Start difference. First operand 879 states and 1263 transitions. Second operand has 14 states, 13 states have (on average 4.538461538461538) internal successors, (59), 14 states have internal predecessors, (59), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-17 06:00:01,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:00:01,602 INFO L93 Difference]: Finished difference Result 1819 states and 2612 transitions. [2025-03-17 06:00:01,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-17 06:00:01,603 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.538461538461538) internal successors, (59), 14 states have internal predecessors, (59), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 151 [2025-03-17 06:00:01,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:00:01,606 INFO L225 Difference]: With dead ends: 1819 [2025-03-17 06:00:01,606 INFO L226 Difference]: Without dead ends: 941 [2025-03-17 06:00:01,607 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2025-03-17 06:00:01,608 INFO L435 NwaCegarLoop]: 204 mSDtfsCounter, 63 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-17 06:00:01,609 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 1601 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-17 06:00:01,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2025-03-17 06:00:01,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 873. [2025-03-17 06:00:01,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 798 states have (on average 1.4072681704260652) internal successors, (1123), 804 states have internal predecessors, (1123), 66 states have call successors, (66), 8 states have call predecessors, (66), 8 states have return successors, (66), 60 states have call predecessors, (66), 66 states have call successors, (66) [2025-03-17 06:00:01,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1255 transitions. [2025-03-17 06:00:01,632 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1255 transitions. Word has length 151 [2025-03-17 06:00:01,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:00:01,632 INFO L471 AbstractCegarLoop]: Abstraction has 873 states and 1255 transitions. [2025-03-17 06:00:01,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.538461538461538) internal successors, (59), 14 states have internal predecessors, (59), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-17 06:00:01,632 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1255 transitions. [2025-03-17 06:00:01,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-17 06:00:01,633 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:00:01,633 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:01,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-03-17 06:00:01,634 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:00:01,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:00:01,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1937322458, now seen corresponding path program 1 times [2025-03-17 06:00:01,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:00:01,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054362812] [2025-03-17 06:00:01,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:00:01,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:00:01,655 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-17 06:00:01,687 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-17 06:00:01,688 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:00:01,688 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:00:02,748 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 06:00:02,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:00:02,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054362812] [2025-03-17 06:00:02,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054362812] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:00:02,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:00:02,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2025-03-17 06:00:02,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473581152] [2025-03-17 06:00:02,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:00:02,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-17 06:00:02,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:00:02,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-17 06:00:02,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2025-03-17 06:00:02,750 INFO L87 Difference]: Start difference. First operand 873 states and 1255 transitions. Second operand has 17 states, 15 states have (on average 3.933333333333333) internal successors, (59), 17 states have internal predecessors, (59), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-17 06:00:03,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:00:03,981 INFO L93 Difference]: Finished difference Result 1944 states and 2788 transitions. [2025-03-17 06:00:03,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-17 06:00:03,981 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.933333333333333) internal successors, (59), 17 states have internal predecessors, (59), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) Word has length 151 [2025-03-17 06:00:03,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:00:03,986 INFO L225 Difference]: With dead ends: 1944 [2025-03-17 06:00:03,986 INFO L226 Difference]: Without dead ends: 1072 [2025-03-17 06:00:03,987 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2025-03-17 06:00:03,987 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 83 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 1562 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1905 SdHoareTripleChecker+Invalid, 1567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-17 06:00:03,987 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 1905 Invalid, 1567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1562 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-17 06:00:03,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2025-03-17 06:00:04,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 1067. [2025-03-17 06:00:04,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 983 states have (on average 1.4079348931841302) internal successors, (1384), 992 states have internal predecessors, (1384), 72 states have call successors, (72), 11 states have call predecessors, (72), 11 states have return successors, (72), 63 states have call predecessors, (72), 72 states have call successors, (72) [2025-03-17 06:00:04,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 1528 transitions. [2025-03-17 06:00:04,020 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 1528 transitions. Word has length 151 [2025-03-17 06:00:04,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:00:04,021 INFO L471 AbstractCegarLoop]: Abstraction has 1067 states and 1528 transitions. [2025-03-17 06:00:04,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.933333333333333) internal successors, (59), 17 states have internal predecessors, (59), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-17 06:00:04,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 1528 transitions. [2025-03-17 06:00:04,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-17 06:00:04,022 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:00:04,022 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:04,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-03-17 06:00:04,023 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:00:04,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:00:04,024 INFO L85 PathProgramCache]: Analyzing trace with hash 2064241831, now seen corresponding path program 1 times [2025-03-17 06:00:04,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:00:04,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848536736] [2025-03-17 06:00:04,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:00:04,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:00:04,043 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-17 06:00:04,059 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-17 06:00:04,060 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:00:04,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:00:04,203 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 06:00:04,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:00:04,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848536736] [2025-03-17 06:00:04,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848536736] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:00:04,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:00:04,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 06:00:04,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117456032] [2025-03-17 06:00:04,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:00:04,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:00:04,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:00:04,208 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:00:04,208 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:00:04,208 INFO L87 Difference]: Start difference. First operand 1067 states and 1528 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-17 06:00:04,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:00:04,485 INFO L93 Difference]: Finished difference Result 2198 states and 3136 transitions. [2025-03-17 06:00:04,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:00:04,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 151 [2025-03-17 06:00:04,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:00:04,490 INFO L225 Difference]: With dead ends: 2198 [2025-03-17 06:00:04,490 INFO L226 Difference]: Without dead ends: 1132 [2025-03-17 06:00:04,492 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 06:00:04,492 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 61 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 06:00:04,492 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 460 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 06:00:04,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2025-03-17 06:00:04,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 910. [2025-03-17 06:00:04,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 837 states have (on average 1.4074074074074074) internal successors, (1178), 843 states have internal predecessors, (1178), 62 states have call successors, (62), 10 states have call predecessors, (62), 10 states have return successors, (62), 56 states have call predecessors, (62), 62 states have call successors, (62) [2025-03-17 06:00:04,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1302 transitions. [2025-03-17 06:00:04,536 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1302 transitions. Word has length 151 [2025-03-17 06:00:04,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:00:04,536 INFO L471 AbstractCegarLoop]: Abstraction has 910 states and 1302 transitions. [2025-03-17 06:00:04,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-17 06:00:04,537 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1302 transitions. [2025-03-17 06:00:04,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-17 06:00:04,539 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:00:04,539 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:04,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-03-17 06:00:04,540 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:00:04,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:00:04,540 INFO L85 PathProgramCache]: Analyzing trace with hash 2102908293, now seen corresponding path program 1 times [2025-03-17 06:00:04,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:00:04,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778793329] [2025-03-17 06:00:04,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:00:04,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:00:04,569 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-17 06:00:04,593 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-17 06:00:04,593 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:00:04,593 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:00:05,005 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 06:00:05,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:00:05,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778793329] [2025-03-17 06:00:05,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778793329] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:00:05,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:00:05,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 06:00:05,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556670846] [2025-03-17 06:00:05,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:00:05,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 06:00:05,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:00:05,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 06:00:05,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 06:00:05,007 INFO L87 Difference]: Start difference. First operand 910 states and 1302 transitions. Second operand has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-17 06:00:05,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:00:05,385 INFO L93 Difference]: Finished difference Result 1914 states and 2727 transitions. [2025-03-17 06:00:05,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:00:05,386 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 151 [2025-03-17 06:00:05,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:00:05,390 INFO L225 Difference]: With dead ends: 1914 [2025-03-17 06:00:05,390 INFO L226 Difference]: Without dead ends: 1005 [2025-03-17 06:00:05,391 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-17 06:00:05,391 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 89 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 06:00:05,391 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 504 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 06:00:05,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2025-03-17 06:00:05,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 871. [2025-03-17 06:00:05,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 798 states have (on average 1.4010025062656641) internal successors, (1118), 804 states have internal predecessors, (1118), 62 states have call successors, (62), 10 states have call predecessors, (62), 10 states have return successors, (62), 56 states have call predecessors, (62), 62 states have call successors, (62) [2025-03-17 06:00:05,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 1242 transitions. [2025-03-17 06:00:05,425 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 1242 transitions. Word has length 151 [2025-03-17 06:00:05,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:00:05,425 INFO L471 AbstractCegarLoop]: Abstraction has 871 states and 1242 transitions. [2025-03-17 06:00:05,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-17 06:00:05,425 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 1242 transitions. [2025-03-17 06:00:05,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-17 06:00:05,426 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:00:05,427 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:05,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-03-17 06:00:05,427 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:00:05,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:00:05,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1854128551, now seen corresponding path program 1 times [2025-03-17 06:00:05,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:00:05,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078687644] [2025-03-17 06:00:05,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:00:05,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:00:05,454 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-17 06:00:05,486 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-17 06:00:05,486 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:00:05,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:00:07,096 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 06:00:07,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:00:07,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078687644] [2025-03-17 06:00:07,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078687644] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:00:07,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:00:07,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2025-03-17 06:00:07,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622257625] [2025-03-17 06:00:07,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:00:07,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-17 06:00:07,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:00:07,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-17 06:00:07,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2025-03-17 06:00:07,097 INFO L87 Difference]: Start difference. First operand 871 states and 1242 transitions. Second operand has 17 states, 13 states have (on average 4.538461538461538) internal successors, (59), 17 states have internal predecessors, (59), 5 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 5 states have call successors, (19) [2025-03-17 06:00:09,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:00:09,144 INFO L93 Difference]: Finished difference Result 2117 states and 2992 transitions. [2025-03-17 06:00:09,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-03-17 06:00:09,145 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 4.538461538461538) internal successors, (59), 17 states have internal predecessors, (59), 5 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 5 states have call successors, (19) Word has length 151 [2025-03-17 06:00:09,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:00:09,149 INFO L225 Difference]: With dead ends: 2117 [2025-03-17 06:00:09,149 INFO L226 Difference]: Without dead ends: 1247 [2025-03-17 06:00:09,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=314, Invalid=2136, Unknown=0, NotChecked=0, Total=2450 [2025-03-17 06:00:09,151 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 986 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 2287 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 1570 SdHoareTripleChecker+Invalid, 2456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 2287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-17 06:00:09,152 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [986 Valid, 1570 Invalid, 2456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 2287 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-17 06:00:09,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2025-03-17 06:00:09,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 930. [2025-03-17 06:00:09,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 930 states, 857 states have (on average 1.3873978996499416) internal successors, (1189), 863 states have internal predecessors, (1189), 62 states have call successors, (62), 10 states have call predecessors, (62), 10 states have return successors, (62), 56 states have call predecessors, (62), 62 states have call successors, (62) [2025-03-17 06:00:09,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1313 transitions. [2025-03-17 06:00:09,182 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1313 transitions. Word has length 151 [2025-03-17 06:00:09,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:00:09,183 INFO L471 AbstractCegarLoop]: Abstraction has 930 states and 1313 transitions. [2025-03-17 06:00:09,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 4.538461538461538) internal successors, (59), 17 states have internal predecessors, (59), 5 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 5 states have call successors, (19) [2025-03-17 06:00:09,183 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1313 transitions. [2025-03-17 06:00:09,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-17 06:00:09,184 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:00:09,184 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:09,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-03-17 06:00:09,184 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:00:09,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:00:09,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1823108744, now seen corresponding path program 1 times [2025-03-17 06:00:09,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:00:09,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500733582] [2025-03-17 06:00:09,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:00:09,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:00:09,204 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-17 06:00:09,226 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-17 06:00:09,227 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:00:09,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:00:10,775 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 06:00:10,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:00:10,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500733582] [2025-03-17 06:00:10,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500733582] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:00:10,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:00:10,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2025-03-17 06:00:10,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456468252] [2025-03-17 06:00:10,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:00:10,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-17 06:00:10,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:00:10,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-17 06:00:10,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2025-03-17 06:00:10,777 INFO L87 Difference]: Start difference. First operand 930 states and 1313 transitions. Second operand has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 19 states have internal predecessors, (59), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-17 06:00:14,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:00:14,085 INFO L93 Difference]: Finished difference Result 2152 states and 3019 transitions. [2025-03-17 06:00:14,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-17 06:00:14,089 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 19 states have internal predecessors, (59), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) Word has length 151 [2025-03-17 06:00:14,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:00:14,093 INFO L225 Difference]: With dead ends: 2152 [2025-03-17 06:00:14,093 INFO L226 Difference]: Without dead ends: 1223 [2025-03-17 06:00:14,095 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=214, Invalid=1118, Unknown=0, NotChecked=0, Total=1332 [2025-03-17 06:00:14,096 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 783 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 3121 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 1916 SdHoareTripleChecker+Invalid, 3250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 3121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2025-03-17 06:00:14,096 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 1916 Invalid, 3250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 3121 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2025-03-17 06:00:14,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2025-03-17 06:00:14,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 985. [2025-03-17 06:00:14,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 985 states, 904 states have (on average 1.3805309734513274) internal successors, (1248), 911 states have internal predecessors, (1248), 68 states have call successors, (68), 12 states have call predecessors, (68), 12 states have return successors, (68), 61 states have call predecessors, (68), 68 states have call successors, (68) [2025-03-17 06:00:14,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1384 transitions. [2025-03-17 06:00:14,129 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1384 transitions. Word has length 151 [2025-03-17 06:00:14,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:00:14,129 INFO L471 AbstractCegarLoop]: Abstraction has 985 states and 1384 transitions. [2025-03-17 06:00:14,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 19 states have internal predecessors, (59), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-17 06:00:14,129 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1384 transitions. [2025-03-17 06:00:14,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-17 06:00:14,130 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:00:14,130 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:14,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-03-17 06:00:14,131 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:00:14,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:00:14,131 INFO L85 PathProgramCache]: Analyzing trace with hash -966594074, now seen corresponding path program 1 times [2025-03-17 06:00:14,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:00:14,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938036150] [2025-03-17 06:00:14,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:00:14,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:00:14,151 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-17 06:00:14,184 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-17 06:00:14,184 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:00:14,184 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:00:15,247 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 06:00:15,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:00:15,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938036150] [2025-03-17 06:00:15,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938036150] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:00:15,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:00:15,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2025-03-17 06:00:15,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886418891] [2025-03-17 06:00:15,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:00:15,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-17 06:00:15,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:00:15,248 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-17 06:00:15,248 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2025-03-17 06:00:15,248 INFO L87 Difference]: Start difference. First operand 985 states and 1384 transitions. Second operand has 17 states, 15 states have (on average 3.933333333333333) internal successors, (59), 17 states have internal predecessors, (59), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-17 06:00:16,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:00:16,556 INFO L93 Difference]: Finished difference Result 2084 states and 2924 transitions. [2025-03-17 06:00:16,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-17 06:00:16,557 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.933333333333333) internal successors, (59), 17 states have internal predecessors, (59), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) Word has length 151 [2025-03-17 06:00:16,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:00:16,561 INFO L225 Difference]: With dead ends: 2084 [2025-03-17 06:00:16,561 INFO L226 Difference]: Without dead ends: 1100 [2025-03-17 06:00:16,562 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2025-03-17 06:00:16,562 INFO L435 NwaCegarLoop]: 205 mSDtfsCounter, 83 mSDsluCounter, 2089 mSDsCounter, 0 mSdLazyCounter, 1839 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 2294 SdHoareTripleChecker+Invalid, 1844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-17 06:00:16,563 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 2294 Invalid, 1844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1839 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-17 06:00:16,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2025-03-17 06:00:16,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 1004. [2025-03-17 06:00:16,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 923 states have (on average 1.3856988082340196) internal successors, (1279), 930 states have internal predecessors, (1279), 68 states have call successors, (68), 12 states have call predecessors, (68), 12 states have return successors, (68), 61 states have call predecessors, (68), 68 states have call successors, (68) [2025-03-17 06:00:16,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1415 transitions. [2025-03-17 06:00:16,597 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1415 transitions. Word has length 151 [2025-03-17 06:00:16,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:00:16,597 INFO L471 AbstractCegarLoop]: Abstraction has 1004 states and 1415 transitions. [2025-03-17 06:00:16,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.933333333333333) internal successors, (59), 17 states have internal predecessors, (59), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-17 06:00:16,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1415 transitions. [2025-03-17 06:00:16,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-17 06:00:16,598 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:00:16,598 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:16,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2025-03-17 06:00:16,598 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:00:16,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:00:16,599 INFO L85 PathProgramCache]: Analyzing trace with hash -489502727, now seen corresponding path program 1 times [2025-03-17 06:00:16,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:00:16,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768714371] [2025-03-17 06:00:16,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:00:16,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:00:16,621 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-17 06:00:16,650 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-17 06:00:16,650 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:00:16,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:00:17,924 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 06:00:17,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:00:17,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768714371] [2025-03-17 06:00:17,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768714371] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:00:17,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:00:17,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2025-03-17 06:00:17,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754655513] [2025-03-17 06:00:17,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:00:17,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-17 06:00:17,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:00:17,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-17 06:00:17,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2025-03-17 06:00:17,926 INFO L87 Difference]: Start difference. First operand 1004 states and 1415 transitions. Second operand has 17 states, 16 states have (on average 3.6875) internal successors, (59), 17 states have internal predecessors, (59), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-17 06:00:19,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:00:19,654 INFO L93 Difference]: Finished difference Result 1679 states and 2357 transitions. [2025-03-17 06:00:19,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-03-17 06:00:19,655 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.6875) internal successors, (59), 17 states have internal predecessors, (59), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 151 [2025-03-17 06:00:19,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:00:19,658 INFO L225 Difference]: With dead ends: 1679 [2025-03-17 06:00:19,659 INFO L226 Difference]: Without dead ends: 1250 [2025-03-17 06:00:19,660 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=242, Invalid=1480, Unknown=0, NotChecked=0, Total=1722 [2025-03-17 06:00:19,660 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 799 mSDsluCounter, 1321 mSDsCounter, 0 mSdLazyCounter, 2092 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 1455 SdHoareTripleChecker+Invalid, 2199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-17 06:00:19,660 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [799 Valid, 1455 Invalid, 2199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 2092 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-17 06:00:19,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2025-03-17 06:00:19,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1001. [2025-03-17 06:00:19,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 920 states have (on average 1.3869565217391304) internal successors, (1276), 927 states have internal predecessors, (1276), 68 states have call successors, (68), 12 states have call predecessors, (68), 12 states have return successors, (68), 61 states have call predecessors, (68), 68 states have call successors, (68) [2025-03-17 06:00:19,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1412 transitions. [2025-03-17 06:00:19,700 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1412 transitions. Word has length 151 [2025-03-17 06:00:19,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:00:19,700 INFO L471 AbstractCegarLoop]: Abstraction has 1001 states and 1412 transitions. [2025-03-17 06:00:19,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.6875) internal successors, (59), 17 states have internal predecessors, (59), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-17 06:00:19,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1412 transitions. [2025-03-17 06:00:19,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-17 06:00:19,701 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:00:19,701 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:19,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2025-03-17 06:00:19,702 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:00:19,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:00:19,702 INFO L85 PathProgramCache]: Analyzing trace with hash -458482920, now seen corresponding path program 1 times [2025-03-17 06:00:19,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:00:19,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646024302] [2025-03-17 06:00:19,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:00:19,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:00:19,722 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-17 06:00:19,742 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-17 06:00:19,743 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:00:19,743 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:00:20,854 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 06:00:20,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:00:20,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646024302] [2025-03-17 06:00:20,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646024302] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:00:20,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:00:20,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2025-03-17 06:00:20,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741324759] [2025-03-17 06:00:20,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:00:20,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-17 06:00:20,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:00:20,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-17 06:00:20,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2025-03-17 06:00:20,855 INFO L87 Difference]: Start difference. First operand 1001 states and 1412 transitions. Second operand has 17 states, 15 states have (on average 3.933333333333333) internal successors, (59), 17 states have internal predecessors, (59), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-17 06:00:22,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:00:22,836 INFO L93 Difference]: Finished difference Result 2275 states and 3191 transitions. [2025-03-17 06:00:22,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-17 06:00:22,836 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.933333333333333) internal successors, (59), 17 states have internal predecessors, (59), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) Word has length 151 [2025-03-17 06:00:22,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:00:22,840 INFO L225 Difference]: With dead ends: 2275 [2025-03-17 06:00:22,840 INFO L226 Difference]: Without dead ends: 1275 [2025-03-17 06:00:22,842 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=248, Invalid=1158, Unknown=0, NotChecked=0, Total=1406 [2025-03-17 06:00:22,842 INFO L435 NwaCegarLoop]: 169 mSDtfsCounter, 739 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 2972 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 3163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 2972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-17 06:00:22,843 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 1574 Invalid, 3163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 2972 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-17 06:00:22,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2025-03-17 06:00:22,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 996. [2025-03-17 06:00:22,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 903 states have (on average 1.3831672203765226) internal successors, (1249), 909 states have internal predecessors, (1249), 79 states have call successors, (79), 13 states have call predecessors, (79), 13 states have return successors, (79), 73 states have call predecessors, (79), 79 states have call successors, (79) [2025-03-17 06:00:22,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1407 transitions. [2025-03-17 06:00:22,879 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1407 transitions. Word has length 151 [2025-03-17 06:00:22,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:00:22,879 INFO L471 AbstractCegarLoop]: Abstraction has 996 states and 1407 transitions. [2025-03-17 06:00:22,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.933333333333333) internal successors, (59), 17 states have internal predecessors, (59), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-17 06:00:22,879 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1407 transitions. [2025-03-17 06:00:22,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-03-17 06:00:22,880 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:00:22,880 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:22,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2025-03-17 06:00:22,881 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:00:22,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:00:22,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1062489032, now seen corresponding path program 1 times [2025-03-17 06:00:22,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:00:22,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517282275] [2025-03-17 06:00:22,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:00:22,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:00:22,904 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-03-17 06:00:22,911 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-03-17 06:00:22,911 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:00:22,911 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:00:23,015 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 12 proven. 42 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2025-03-17 06:00:23,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:00:23,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517282275] [2025-03-17 06:00:23,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517282275] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:00:23,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673275859] [2025-03-17 06:00:23,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:00:23,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:00:23,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:00:23,018 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 06:00:23,019 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 06:00:23,232 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-03-17 06:00:23,280 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-03-17 06:00:23,280 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:00:23,280 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:00:23,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 06:00:23,285 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:00:23,308 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 06:00:23,308 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:00:23,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673275859] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:00:23,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:00:23,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 10 [2025-03-17 06:00:23,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953221419] [2025-03-17 06:00:23,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:00:23,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 06:00:23,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:00:23,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 06:00:23,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-17 06:00:23,310 INFO L87 Difference]: Start difference. First operand 996 states and 1407 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-17 06:00:23,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:00:23,373 INFO L93 Difference]: Finished difference Result 2031 states and 2863 transitions. [2025-03-17 06:00:23,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:00:23,373 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 152 [2025-03-17 06:00:23,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:00:23,377 INFO L225 Difference]: With dead ends: 2031 [2025-03-17 06:00:23,377 INFO L226 Difference]: Without dead ends: 1036 [2025-03-17 06:00:23,379 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 152 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 06:00:23,379 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 0 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 06:00:23,379 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 819 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 06:00:23,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2025-03-17 06:00:23,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 1006. [2025-03-17 06:00:23,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 913 states have (on average 1.3789704271631982) internal successors, (1259), 919 states have internal predecessors, (1259), 79 states have call successors, (79), 13 states have call predecessors, (79), 13 states have return successors, (79), 73 states have call predecessors, (79), 79 states have call successors, (79) [2025-03-17 06:00:23,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1417 transitions. [2025-03-17 06:00:23,413 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1417 transitions. Word has length 152 [2025-03-17 06:00:23,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:00:23,413 INFO L471 AbstractCegarLoop]: Abstraction has 1006 states and 1417 transitions. [2025-03-17 06:00:23,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-17 06:00:23,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1417 transitions. [2025-03-17 06:00:23,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-03-17 06:00:23,415 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:00:23,415 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:23,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 06:00:23,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:00:23,616 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:00:23,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:00:23,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1825883094, now seen corresponding path program 1 times [2025-03-17 06:00:23,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:00:23,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701325530] [2025-03-17 06:00:23,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:00:23,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:00:23,638 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-03-17 06:00:23,652 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-03-17 06:00:23,652 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:00:23,652 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:00:24,256 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 06:00:24,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:00:24,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701325530] [2025-03-17 06:00:24,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701325530] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:00:24,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:00:24,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 06:00:24,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356122694] [2025-03-17 06:00:24,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:00:24,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 06:00:24,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:00:24,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 06:00:24,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 06:00:24,258 INFO L87 Difference]: Start difference. First operand 1006 states and 1417 transitions. Second operand has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-17 06:00:24,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:00:24,642 INFO L93 Difference]: Finished difference Result 1802 states and 2541 transitions. [2025-03-17 06:00:24,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:00:24,643 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 154 [2025-03-17 06:00:24,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:00:24,646 INFO L225 Difference]: With dead ends: 1802 [2025-03-17 06:00:24,646 INFO L226 Difference]: Without dead ends: 1357 [2025-03-17 06:00:24,647 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-17 06:00:24,648 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 77 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 06:00:24,648 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 545 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 06:00:24,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2025-03-17 06:00:24,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 1182. [2025-03-17 06:00:24,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 1089 states have (on average 1.401285583103765) internal successors, (1526), 1095 states have internal predecessors, (1526), 79 states have call successors, (79), 13 states have call predecessors, (79), 13 states have return successors, (79), 73 states have call predecessors, (79), 79 states have call successors, (79) [2025-03-17 06:00:24,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1684 transitions. [2025-03-17 06:00:24,682 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1684 transitions. Word has length 154 [2025-03-17 06:00:24,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:00:24,682 INFO L471 AbstractCegarLoop]: Abstraction has 1182 states and 1684 transitions. [2025-03-17 06:00:24,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-17 06:00:24,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1684 transitions. [2025-03-17 06:00:24,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-03-17 06:00:24,684 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:00:24,684 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:24,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2025-03-17 06:00:24,684 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:00:24,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:00:24,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1954965813, now seen corresponding path program 1 times [2025-03-17 06:00:24,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:00:24,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9187383] [2025-03-17 06:00:24,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:00:24,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:00:24,709 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-03-17 06:00:24,715 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-03-17 06:00:24,715 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:00:24,715 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:00:24,818 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 12 proven. 42 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2025-03-17 06:00:24,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:00:24,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9187383] [2025-03-17 06:00:24,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9187383] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:00:24,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354204959] [2025-03-17 06:00:24,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:00:24,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:00:24,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:00:24,821 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 06:00:24,821 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 06:00:25,036 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-03-17 06:00:25,077 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-03-17 06:00:25,077 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:00:25,077 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:00:25,080 INFO L256 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 06:00:25,083 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:00:25,115 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 06:00:25,115 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:00:25,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354204959] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:00:25,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:00:25,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 12 [2025-03-17 06:00:25,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712986267] [2025-03-17 06:00:25,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:00:25,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 06:00:25,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:00:25,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 06:00:25,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2025-03-17 06:00:25,119 INFO L87 Difference]: Start difference. First operand 1182 states and 1684 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-17 06:00:25,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:00:25,193 INFO L93 Difference]: Finished difference Result 2403 states and 3415 transitions. [2025-03-17 06:00:25,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:00:25,193 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 154 [2025-03-17 06:00:25,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:00:25,196 INFO L225 Difference]: With dead ends: 2403 [2025-03-17 06:00:25,196 INFO L226 Difference]: Without dead ends: 1222 [2025-03-17 06:00:25,198 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 153 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 06:00:25,198 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 0 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 06:00:25,198 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 977 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 06:00:25,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2025-03-17 06:00:25,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1182. [2025-03-17 06:00:25,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 1089 states have (on average 1.399449035812672) internal successors, (1524), 1095 states have internal predecessors, (1524), 79 states have call successors, (79), 13 states have call predecessors, (79), 13 states have return successors, (79), 73 states have call predecessors, (79), 79 states have call successors, (79) [2025-03-17 06:00:25,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1682 transitions. [2025-03-17 06:00:25,234 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1682 transitions. Word has length 154 [2025-03-17 06:00:25,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:00:25,235 INFO L471 AbstractCegarLoop]: Abstraction has 1182 states and 1682 transitions. [2025-03-17 06:00:25,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-17 06:00:25,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1682 transitions. [2025-03-17 06:00:25,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-03-17 06:00:25,236 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:00:25,236 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:25,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-17 06:00:25,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:00:25,437 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:00:25,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:00:25,437 INFO L85 PathProgramCache]: Analyzing trace with hash -508137493, now seen corresponding path program 1 times [2025-03-17 06:00:25,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:00:25,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384877504] [2025-03-17 06:00:25,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:00:25,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:00:25,457 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-03-17 06:00:25,480 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-03-17 06:00:25,481 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:00:25,481 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:00:25,985 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 06:00:25,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:00:25,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384877504] [2025-03-17 06:00:25,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384877504] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:00:25,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:00:25,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2025-03-17 06:00:25,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676324449] [2025-03-17 06:00:25,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:00:25,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-17 06:00:25,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:00:25,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-17 06:00:25,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2025-03-17 06:00:25,987 INFO L87 Difference]: Start difference. First operand 1182 states and 1682 transitions. Second operand has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-17 06:00:27,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:00:27,910 INFO L93 Difference]: Finished difference Result 2473 states and 3358 transitions. [2025-03-17 06:00:27,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2025-03-17 06:00:27,911 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 154 [2025-03-17 06:00:27,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:00:27,916 INFO L225 Difference]: With dead ends: 2473 [2025-03-17 06:00:27,917 INFO L226 Difference]: Without dead ends: 2471 [2025-03-17 06:00:27,918 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1014 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=550, Invalid=3110, Unknown=0, NotChecked=0, Total=3660 [2025-03-17 06:00:27,919 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 991 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 2439 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 2709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 2439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-17 06:00:27,919 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [991 Valid, 1404 Invalid, 2709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 2439 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-17 06:00:27,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2025-03-17 06:00:27,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 1959. [2025-03-17 06:00:28,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1959 states, 1790 states have (on average 1.3513966480446928) internal successors, (2419), 1803 states have internal predecessors, (2419), 142 states have call successors, (142), 26 states have call predecessors, (142), 26 states have return successors, (142), 129 states have call predecessors, (142), 142 states have call successors, (142) [2025-03-17 06:00:28,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 2703 transitions. [2025-03-17 06:00:28,004 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 2703 transitions. Word has length 154 [2025-03-17 06:00:28,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:00:28,004 INFO L471 AbstractCegarLoop]: Abstraction has 1959 states and 2703 transitions. [2025-03-17 06:00:28,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-17 06:00:28,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 2703 transitions. [2025-03-17 06:00:28,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-03-17 06:00:28,005 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:00:28,005 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:28,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2025-03-17 06:00:28,005 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:00:28,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:00:28,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1775982505, now seen corresponding path program 1 times [2025-03-17 06:00:28,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:00:28,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012616454] [2025-03-17 06:00:28,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:00:28,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:00:28,025 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-03-17 06:00:28,039 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-03-17 06:00:28,039 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:00:28,039 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:00:28,145 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 06:00:28,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:00:28,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012616454] [2025-03-17 06:00:28,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012616454] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:00:28,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:00:28,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 06:00:28,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043217710] [2025-03-17 06:00:28,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:00:28,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:00:28,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:00:28,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:00:28,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:00:28,148 INFO L87 Difference]: Start difference. First operand 1959 states and 2703 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-17 06:00:28,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:00:28,551 INFO L93 Difference]: Finished difference Result 5224 states and 7185 transitions. [2025-03-17 06:00:28,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:00:28,551 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 154 [2025-03-17 06:00:28,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:00:28,559 INFO L225 Difference]: With dead ends: 5224 [2025-03-17 06:00:28,559 INFO L226 Difference]: Without dead ends: 3266 [2025-03-17 06:00:28,562 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 06:00:28,562 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 135 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 06:00:28,562 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 324 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 06:00:28,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3266 states. [2025-03-17 06:00:28,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3266 to 2232. [2025-03-17 06:00:28,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2232 states, 2063 states have (on average 1.3145904023267088) internal successors, (2712), 2076 states have internal predecessors, (2712), 142 states have call successors, (142), 26 states have call predecessors, (142), 26 states have return successors, (142), 129 states have call predecessors, (142), 142 states have call successors, (142) [2025-03-17 06:00:28,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2232 states to 2232 states and 2996 transitions. [2025-03-17 06:00:28,645 INFO L78 Accepts]: Start accepts. Automaton has 2232 states and 2996 transitions. Word has length 154 [2025-03-17 06:00:28,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:00:28,645 INFO L471 AbstractCegarLoop]: Abstraction has 2232 states and 2996 transitions. [2025-03-17 06:00:28,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-17 06:00:28,646 INFO L276 IsEmpty]: Start isEmpty. Operand 2232 states and 2996 transitions. [2025-03-17 06:00:28,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-03-17 06:00:28,647 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:00:28,647 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:28,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2025-03-17 06:00:28,647 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:00:28,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:00:28,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1172336428, now seen corresponding path program 1 times [2025-03-17 06:00:28,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:00:28,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814753257] [2025-03-17 06:00:28,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:00:28,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:00:28,669 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-03-17 06:00:28,693 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-03-17 06:00:28,693 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:00:28,693 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:00:29,735 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 06:00:29,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:00:29,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814753257] [2025-03-17 06:00:29,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814753257] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:00:29,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:00:29,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-17 06:00:29,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448337145] [2025-03-17 06:00:29,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:00:29,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:00:29,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:00:29,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:00:29,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:00:29,736 INFO L87 Difference]: Start difference. First operand 2232 states and 2996 transitions. Second operand has 11 states, 10 states have (on average 6.3) internal successors, (63), 11 states have internal predecessors, (63), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-17 06:00:30,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:00:30,622 INFO L93 Difference]: Finished difference Result 3214 states and 4326 transitions. [2025-03-17 06:00:30,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-17 06:00:30,623 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.3) internal successors, (63), 11 states have internal predecessors, (63), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 155 [2025-03-17 06:00:30,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:00:30,627 INFO L225 Difference]: With dead ends: 3214 [2025-03-17 06:00:30,628 INFO L226 Difference]: Without dead ends: 2453 [2025-03-17 06:00:30,629 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2025-03-17 06:00:30,629 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 311 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-17 06:00:30,629 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 834 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-17 06:00:30,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2453 states. [2025-03-17 06:00:30,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2453 to 2301. [2025-03-17 06:00:30,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2301 states, 2132 states have (on average 1.3095684803001877) internal successors, (2792), 2145 states have internal predecessors, (2792), 142 states have call successors, (142), 26 states have call predecessors, (142), 26 states have return successors, (142), 129 states have call predecessors, (142), 142 states have call successors, (142) [2025-03-17 06:00:30,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2301 states to 2301 states and 3076 transitions. [2025-03-17 06:00:30,705 INFO L78 Accepts]: Start accepts. Automaton has 2301 states and 3076 transitions. Word has length 155 [2025-03-17 06:00:30,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:00:30,705 INFO L471 AbstractCegarLoop]: Abstraction has 2301 states and 3076 transitions. [2025-03-17 06:00:30,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.3) internal successors, (63), 11 states have internal predecessors, (63), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-17 06:00:30,706 INFO L276 IsEmpty]: Start isEmpty. Operand 2301 states and 3076 transitions. [2025-03-17 06:00:30,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-03-17 06:00:30,707 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:00:30,707 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:30,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2025-03-17 06:00:30,708 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:00:30,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:00:30,708 INFO L85 PathProgramCache]: Analyzing trace with hash 917599883, now seen corresponding path program 1 times [2025-03-17 06:00:30,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:00:30,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83041421] [2025-03-17 06:00:30,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:00:30,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:00:30,729 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-03-17 06:00:30,765 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-03-17 06:00:30,765 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:00:30,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:00:33,235 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-03-17 06:00:33,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:00:33,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83041421] [2025-03-17 06:00:33,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83041421] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:00:33,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:00:33,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-17 06:00:33,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378093503] [2025-03-17 06:00:33,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:00:33,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 06:00:33,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:00:33,237 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 06:00:33,237 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2025-03-17 06:00:33,237 INFO L87 Difference]: Start difference. First operand 2301 states and 3076 transitions. Second operand has 14 states, 12 states have (on average 5.25) internal successors, (63), 14 states have internal predecessors, (63), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19)