./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-23.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-23.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 6ff28b25634280706396cfbea7901c68a9db0fe007a7f115a9dd84fe21326a05 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 06:06:23,408 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 06:06:23,470 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 06:06:23,477 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 06:06:23,477 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 06:06:23,500 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 06:06:23,502 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 06:06:23,502 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 06:06:23,502 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 06:06:23,502 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 06:06:23,503 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 06:06:23,503 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 06:06:23,504 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 06:06:23,504 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 06:06:23,504 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 06:06:23,504 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 06:06:23,504 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 06:06:23,504 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 06:06:23,505 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 06:06:23,505 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 06:06:23,505 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 06:06:23,505 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 06:06:23,505 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 06:06:23,505 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 06:06:23,505 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 06:06:23,505 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 06:06:23,505 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 06:06:23,505 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 06:06:23,505 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 06:06:23,505 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 06:06:23,506 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 06:06:23,506 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 06:06:23,506 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:06:23,506 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 06:06:23,506 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 06:06:23,506 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 06:06:23,507 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 06:06:23,507 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 06:06:23,507 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 06:06:23,507 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 06:06:23,507 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 06:06:23,507 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 06:06:23,507 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 06:06:23,507 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 -> 6ff28b25634280706396cfbea7901c68a9db0fe007a7f115a9dd84fe21326a05 [2025-03-17 06:06:23,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 06:06:23,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 06:06:23,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 06:06:23,781 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 06:06:23,781 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 06:06:23,783 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-23.i [2025-03-17 06:06:25,334 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e6709b4a/eb99ae228d724e60ae0127dcaefb52a1/FLAGfa79fa1c2 [2025-03-17 06:06:25,614 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 06:06:25,615 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-23.i [2025-03-17 06:06:25,625 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e6709b4a/eb99ae228d724e60ae0127dcaefb52a1/FLAGfa79fa1c2 [2025-03-17 06:06:25,643 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e6709b4a/eb99ae228d724e60ae0127dcaefb52a1 [2025-03-17 06:06:25,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 06:06:25,647 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 06:06:25,648 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 06:06:25,649 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 06:06:25,652 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 06:06:25,653 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:06:25" (1/1) ... [2025-03-17 06:06:25,655 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f833fe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:25, skipping insertion in model container [2025-03-17 06:06:25,656 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:06:25" (1/1) ... [2025-03-17 06:06:25,689 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 06:06:25,815 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-23.i[917,930] [2025-03-17 06:06:25,866 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:06:25,877 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 06:06:25,889 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-23.i[917,930] [2025-03-17 06:06:25,933 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:06:25,956 INFO L204 MainTranslator]: Completed translation [2025-03-17 06:06:25,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:25 WrapperNode [2025-03-17 06:06:25,957 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 06:06:25,958 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 06:06:25,959 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 06:06:25,959 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 06:06:25,964 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:25" (1/1) ... [2025-03-17 06:06:25,981 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:25" (1/1) ... [2025-03-17 06:06:26,009 INFO L138 Inliner]: procedures = 30, calls = 178, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 551 [2025-03-17 06:06:26,010 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 06:06:26,010 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 06:06:26,010 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 06:06:26,010 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 06:06:26,017 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:25" (1/1) ... [2025-03-17 06:06:26,017 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:25" (1/1) ... [2025-03-17 06:06:26,024 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:25" (1/1) ... [2025-03-17 06:06:26,033 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2025-03-17 06:06:26,033 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:25" (1/1) ... [2025-03-17 06:06:26,033 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:25" (1/1) ... [2025-03-17 06:06:26,047 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:25" (1/1) ... [2025-03-17 06:06:26,048 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:25" (1/1) ... [2025-03-17 06:06:26,054 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:25" (1/1) ... [2025-03-17 06:06:26,056 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:25" (1/1) ... [2025-03-17 06:06:26,061 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 06:06:26,062 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 06:06:26,062 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 06:06:26,062 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 06:06:26,063 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:25" (1/1) ... [2025-03-17 06:06:26,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:06:26,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:06:26,100 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 06:06:26,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 06:06:26,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 06:06:26,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2025-03-17 06:06:26,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2025-03-17 06:06:26,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2025-03-17 06:06:26,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-03-17 06:06:26,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2025-03-17 06:06:26,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-03-17 06:06:26,135 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 06:06:26,135 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 06:06:26,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-17 06:06:26,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 06:06:26,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 06:06:26,254 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 06:06:26,256 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 06:06:26,813 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L137: havoc property_#t~mem109#1;havoc property_#t~mem104#1;havoc property_#t~mem105#1;havoc property_#t~ite108#1;havoc property_#t~mem106#1;havoc property_#t~mem107#1;havoc property_#t~mem110#1;havoc property_#t~mem111#1;havoc property_#t~mem114#1;havoc property_#t~mem112#1;havoc property_#t~mem113#1;havoc property_#t~ite121#1;havoc property_#t~mem120#1;havoc property_#t~mem115#1;havoc property_#t~mem116#1;havoc property_#t~ite119#1;havoc property_#t~mem117#1;havoc property_#t~mem118#1;havoc property_#t~short122#1;havoc property_#t~mem132#1;havoc property_#t~mem126#1;havoc property_#t~mem123#1;havoc property_#t~mem124#1;havoc property_#t~mem125#1;havoc property_#t~ite131#1;havoc property_#t~mem127#1;havoc property_#t~mem128#1;havoc property_#t~mem129#1;havoc property_#t~mem130#1;havoc property_#t~short133#1;havoc property_#t~mem134#1;havoc property_#t~ite144#1;havoc property_#t~mem135#1;havoc property_#t~mem136#1;havoc property_#t~mem137#1;havoc property_#t~mem138#1;havoc property_#t~ite143#1;havoc property_#t~mem139#1;havoc property_#t~ite142#1;havoc property_#t~mem141#1;havoc property_#t~mem140#1;havoc property_#t~short145#1;havoc property_#t~mem146#1;havoc property_#t~mem147#1;havoc property_#t~mem148#1;havoc property_#t~mem149#1;havoc property_#t~short150#1;havoc property_#t~ite155#1;havoc property_#t~mem152#1;havoc property_#t~mem151#1;havoc property_#t~mem154#1;havoc property_#t~mem153#1;havoc property_#t~short156#1; [2025-03-17 06:06:26,869 INFO L? ?]: Removed 146 outVars from TransFormulas that were not future-live. [2025-03-17 06:06:26,869 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 06:06:26,878 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 06:06:26,879 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 06:06:26,879 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:06:26 BoogieIcfgContainer [2025-03-17 06:06:26,879 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 06:06:26,882 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 06:06:26,882 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 06:06:26,886 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 06:06:26,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:06:25" (1/3) ... [2025-03-17 06:06:26,887 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e8a05b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:06:26, skipping insertion in model container [2025-03-17 06:06:26,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:06:25" (2/3) ... [2025-03-17 06:06:26,887 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e8a05b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:06:26, skipping insertion in model container [2025-03-17 06:06:26,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:06:26" (3/3) ... [2025-03-17 06:06:26,888 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-23.i [2025-03-17 06:06:26,900 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 06:06:26,902 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-sp_file-23.i that has 2 procedures, 118 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-17 06:06:26,947 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 06:06:26,956 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;@87a4c71, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 06:06:26,956 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 06:06:26,960 INFO L276 IsEmpty]: Start isEmpty. Operand has 118 states, 95 states have (on average 1.431578947368421) internal successors, (136), 96 states have internal predecessors, (136), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-17 06:06:26,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2025-03-17 06:06:26,970 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:06:26,971 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:06:26,971 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:06:26,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:06:26,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1346327676, now seen corresponding path program 1 times [2025-03-17 06:06:26,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:06:26,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661003697] [2025-03-17 06:06:26,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:06:26,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:06:27,132 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-03-17 06:06:27,185 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-03-17 06:06:27,188 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:06:27,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:06:27,364 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2025-03-17 06:06:27,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:06:27,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661003697] [2025-03-17 06:06:27,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661003697] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:06:27,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980181236] [2025-03-17 06:06:27,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:06:27,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:06:27,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:06:27,368 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:06:27,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 06:06:27,508 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-03-17 06:06:27,585 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-03-17 06:06:27,586 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:06:27,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:06:27,591 INFO L256 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 06:06:27,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:06:27,652 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2025-03-17 06:06:27,653 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:06:27,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980181236] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:06:27,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:06:27,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 06:06:27,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412330264] [2025-03-17 06:06:27,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:06:27,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 06:06:27,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:06:27,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 06:06:27,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 06:06:27,687 INFO L87 Difference]: Start difference. First operand has 118 states, 95 states have (on average 1.431578947368421) internal successors, (136), 96 states have internal predecessors, (136), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2025-03-17 06:06:27,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:06:27,714 INFO L93 Difference]: Finished difference Result 233 states and 370 transitions. [2025-03-17 06:06:27,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 06:06:27,718 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 161 [2025-03-17 06:06:27,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:06:27,723 INFO L225 Difference]: With dead ends: 233 [2025-03-17 06:06:27,723 INFO L226 Difference]: Without dead ends: 116 [2025-03-17 06:06:27,725 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 06:06:27,727 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 06:06:27,727 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 06:06:27,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2025-03-17 06:06:27,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2025-03-17 06:06:27,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 94 states have (on average 1.4042553191489362) internal successors, (132), 94 states have internal predecessors, (132), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-17 06:06:27,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 172 transitions. [2025-03-17 06:06:27,769 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 172 transitions. Word has length 161 [2025-03-17 06:06:27,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:06:27,769 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 172 transitions. [2025-03-17 06:06:27,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2025-03-17 06:06:27,770 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 172 transitions. [2025-03-17 06:06:27,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2025-03-17 06:06:27,775 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:06:27,775 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:06:27,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 06:06:27,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-17 06:06:27,976 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:06:27,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:06:27,977 INFO L85 PathProgramCache]: Analyzing trace with hash -446652322, now seen corresponding path program 1 times [2025-03-17 06:06:27,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:06:27,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40671582] [2025-03-17 06:06:27,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:06:27,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:06:28,023 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-03-17 06:06:28,331 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-03-17 06:06:28,331 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:06:28,331 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:06:32,629 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-17 06:06:32,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:06:32,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40671582] [2025-03-17 06:06:32,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40671582] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:06:32,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:06:32,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-17 06:06:32,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881876414] [2025-03-17 06:06:32,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:06:32,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 06:06:32,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:06:32,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 06:06:32,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2025-03-17 06:06:32,634 INFO L87 Difference]: Start difference. First operand 116 states and 172 transitions. Second operand has 14 states, 13 states have (on average 4.923076923076923) internal successors, (64), 14 states have internal predecessors, (64), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2025-03-17 06:06:34,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:06:34,285 INFO L93 Difference]: Finished difference Result 278 states and 412 transitions. [2025-03-17 06:06:34,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 06:06:34,288 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.923076923076923) internal successors, (64), 14 states have internal predecessors, (64), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) Word has length 161 [2025-03-17 06:06:34,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:06:34,289 INFO L225 Difference]: With dead ends: 278 [2025-03-17 06:06:34,289 INFO L226 Difference]: Without dead ends: 163 [2025-03-17 06:06:34,290 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2025-03-17 06:06:34,293 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 405 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-17 06:06:34,293 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 667 Invalid, 911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-17 06:06:34,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2025-03-17 06:06:34,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 131. [2025-03-17 06:06:34,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 109 states have (on average 1.4220183486238531) internal successors, (155), 109 states have internal predecessors, (155), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-17 06:06:34,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 195 transitions. [2025-03-17 06:06:34,316 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 195 transitions. Word has length 161 [2025-03-17 06:06:34,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:06:34,317 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 195 transitions. [2025-03-17 06:06:34,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.923076923076923) internal successors, (64), 14 states have internal predecessors, (64), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2025-03-17 06:06:34,317 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 195 transitions. [2025-03-17 06:06:34,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2025-03-17 06:06:34,320 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:06:34,320 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:06:34,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 06:06:34,321 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:06:34,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:06:34,322 INFO L85 PathProgramCache]: Analyzing trace with hash -740055329, now seen corresponding path program 1 times [2025-03-17 06:06:34,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:06:34,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087569321] [2025-03-17 06:06:34,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:06:34,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:06:34,359 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-03-17 06:06:34,518 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-03-17 06:06:34,519 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:06:34,519 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:06:39,277 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-17 06:06:39,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:06:39,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087569321] [2025-03-17 06:06:39,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087569321] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:06:39,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:06:39,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-17 06:06:39,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089919695] [2025-03-17 06:06:39,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:06:39,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 06:06:39,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:06:39,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 06:06:39,284 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2025-03-17 06:06:39,285 INFO L87 Difference]: Start difference. First operand 131 states and 195 transitions. Second operand has 14 states, 12 states have (on average 5.333333333333333) internal successors, (64), 14 states have internal predecessors, (64), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) [2025-03-17 06:06:41,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:06:41,180 INFO L93 Difference]: Finished difference Result 330 states and 487 transitions. [2025-03-17 06:06:41,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:06:41,181 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 5.333333333333333) internal successors, (64), 14 states have internal predecessors, (64), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) Word has length 161 [2025-03-17 06:06:41,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:06:41,183 INFO L225 Difference]: With dead ends: 330 [2025-03-17 06:06:41,183 INFO L226 Difference]: Without dead ends: 200 [2025-03-17 06:06:41,184 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2025-03-17 06:06:41,188 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 524 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 1021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-17 06:06:41,188 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 840 Invalid, 1021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-17 06:06:41,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2025-03-17 06:06:41,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 131. [2025-03-17 06:06:41,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 109 states have (on average 1.4128440366972477) internal successors, (154), 109 states have internal predecessors, (154), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-17 06:06:41,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 194 transitions. [2025-03-17 06:06:41,215 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 194 transitions. Word has length 161 [2025-03-17 06:06:41,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:06:41,216 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 194 transitions. [2025-03-17 06:06:41,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 5.333333333333333) internal successors, (64), 14 states have internal predecessors, (64), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) [2025-03-17 06:06:41,216 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 194 transitions. [2025-03-17 06:06:41,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2025-03-17 06:06:41,220 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:06:41,221 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:06:41,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 06:06:41,221 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:06:41,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:06:41,222 INFO L85 PathProgramCache]: Analyzing trace with hash -513659075, now seen corresponding path program 1 times [2025-03-17 06:06:41,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:06:41,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963692700] [2025-03-17 06:06:41,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:06:41,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:06:41,265 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-03-17 06:06:41,370 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-03-17 06:06:41,370 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:06:41,370 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:06:45,183 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-17 06:06:45,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:06:45,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963692700] [2025-03-17 06:06:45,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963692700] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:06:45,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:06:45,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-17 06:06:45,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608542741] [2025-03-17 06:06:45,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:06:45,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 06:06:45,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:06:45,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 06:06:45,189 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2025-03-17 06:06:45,189 INFO L87 Difference]: Start difference. First operand 131 states and 194 transitions. Second operand has 13 states, 11 states have (on average 5.818181818181818) internal successors, (64), 13 states have internal predecessors, (64), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) [2025-03-17 06:06:46,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:06:46,454 INFO L93 Difference]: Finished difference Result 304 states and 450 transitions. [2025-03-17 06:06:46,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 06:06:46,455 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.818181818181818) internal successors, (64), 13 states have internal predecessors, (64), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) Word has length 161 [2025-03-17 06:06:46,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:06:46,457 INFO L225 Difference]: With dead ends: 304 [2025-03-17 06:06:46,458 INFO L226 Difference]: Without dead ends: 174 [2025-03-17 06:06:46,459 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2025-03-17 06:06:46,460 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 262 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-17 06:06:46,460 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 550 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-17 06:06:46,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2025-03-17 06:06:46,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 142. [2025-03-17 06:06:46,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 120 states have (on average 1.425) internal successors, (171), 120 states have internal predecessors, (171), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-17 06:06:46,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 211 transitions. [2025-03-17 06:06:46,474 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 211 transitions. Word has length 161 [2025-03-17 06:06:46,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:06:46,474 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 211 transitions. [2025-03-17 06:06:46,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.818181818181818) internal successors, (64), 13 states have internal predecessors, (64), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) [2025-03-17 06:06:46,475 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 211 transitions. [2025-03-17 06:06:46,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2025-03-17 06:06:46,476 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:06:46,477 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:06:46,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 06:06:46,477 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:06:46,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:06:46,477 INFO L85 PathProgramCache]: Analyzing trace with hash -807062082, now seen corresponding path program 1 times [2025-03-17 06:06:46,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:06:46,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439914524] [2025-03-17 06:06:46,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:06:46,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:06:46,513 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-03-17 06:06:46,609 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-03-17 06:06:46,609 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:06:46,609 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:06:47,672 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-17 06:06:47,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:06:47,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439914524] [2025-03-17 06:06:47,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439914524] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:06:47,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:06:47,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-17 06:06:47,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146297081] [2025-03-17 06:06:47,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:06:47,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 06:06:47,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:06:47,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 06:06:47,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:06:47,674 INFO L87 Difference]: Start difference. First operand 142 states and 211 transitions. Second operand has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-03-17 06:06:48,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:06:48,537 INFO L93 Difference]: Finished difference Result 315 states and 466 transitions. [2025-03-17 06:06:48,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 06:06:48,539 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 161 [2025-03-17 06:06:48,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:06:48,540 INFO L225 Difference]: With dead ends: 315 [2025-03-17 06:06:48,540 INFO L226 Difference]: Without dead ends: 174 [2025-03-17 06:06:48,541 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2025-03-17 06:06:48,541 INFO L435 NwaCegarLoop]: 182 mSDtfsCounter, 220 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-17 06:06:48,542 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 936 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-17 06:06:48,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2025-03-17 06:06:48,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 142. [2025-03-17 06:06:48,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 120 states have (on average 1.425) internal successors, (171), 120 states have internal predecessors, (171), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-17 06:06:48,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 211 transitions. [2025-03-17 06:06:48,554 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 211 transitions. Word has length 161 [2025-03-17 06:06:48,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:06:48,555 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 211 transitions. [2025-03-17 06:06:48,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-03-17 06:06:48,555 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 211 transitions. [2025-03-17 06:06:48,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2025-03-17 06:06:48,556 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:06:48,556 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:06:48,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 06:06:48,557 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:06:48,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:06:48,557 INFO L85 PathProgramCache]: Analyzing trace with hash -692901024, now seen corresponding path program 1 times [2025-03-17 06:06:48,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:06:48,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766485589] [2025-03-17 06:06:48,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:06:48,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:06:48,597 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-17 06:06:48,694 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-17 06:06:48,694 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:06:48,695 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:06:52,113 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-17 06:06:52,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:06:52,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766485589] [2025-03-17 06:06:52,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766485589] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:06:52,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:06:52,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2025-03-17 06:06:52,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139745800] [2025-03-17 06:06:52,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:06:52,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-17 06:06:52,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:06:52,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-17 06:06:52,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2025-03-17 06:06:52,116 INFO L87 Difference]: Start difference. First operand 142 states and 211 transitions. Second operand has 17 states, 16 states have (on average 4.125) internal successors, (66), 17 states have internal predecessors, (66), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2025-03-17 06:06:54,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:06:54,085 INFO L93 Difference]: Finished difference Result 380 states and 562 transitions. [2025-03-17 06:06:54,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:06:54,086 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.125) internal successors, (66), 17 states have internal predecessors, (66), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) Word has length 163 [2025-03-17 06:06:54,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:06:54,088 INFO L225 Difference]: With dead ends: 380 [2025-03-17 06:06:54,088 INFO L226 Difference]: Without dead ends: 239 [2025-03-17 06:06:54,089 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2025-03-17 06:06:54,089 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 828 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-17 06:06:54,089 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 732 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-17 06:06:54,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2025-03-17 06:06:54,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 155. [2025-03-17 06:06:54,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 133 states have (on average 1.443609022556391) internal successors, (192), 133 states have internal predecessors, (192), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-17 06:06:54,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 232 transitions. [2025-03-17 06:06:54,103 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 232 transitions. Word has length 163 [2025-03-17 06:06:54,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:06:54,103 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 232 transitions. [2025-03-17 06:06:54,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.125) internal successors, (66), 17 states have internal predecessors, (66), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2025-03-17 06:06:54,104 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 232 transitions. [2025-03-17 06:06:54,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2025-03-17 06:06:54,105 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:06:54,105 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:06:54,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 06:06:54,105 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:06:54,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:06:54,106 INFO L85 PathProgramCache]: Analyzing trace with hash -986304031, now seen corresponding path program 1 times [2025-03-17 06:06:54,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:06:54,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019530629] [2025-03-17 06:06:54,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:06:54,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:06:54,140 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-17 06:06:54,234 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-17 06:06:54,235 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:06:54,235 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:06:57,758 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-17 06:06:57,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:06:57,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019530629] [2025-03-17 06:06:57,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019530629] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:06:57,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:06:57,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-17 06:06:57,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655514881] [2025-03-17 06:06:57,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:06:57,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 06:06:57,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:06:57,759 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 06:06:57,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2025-03-17 06:06:57,760 INFO L87 Difference]: Start difference. First operand 155 states and 232 transitions. Second operand has 13 states, 11 states have (on average 6.0) internal successors, (66), 13 states have internal predecessors, (66), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) [2025-03-17 06:06:58,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:06:58,873 INFO L93 Difference]: Finished difference Result 350 states and 522 transitions. [2025-03-17 06:06:58,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 06:06:58,875 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.0) internal successors, (66), 13 states have internal predecessors, (66), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) Word has length 163 [2025-03-17 06:06:58,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:06:58,876 INFO L225 Difference]: With dead ends: 350 [2025-03-17 06:06:58,876 INFO L226 Difference]: Without dead ends: 196 [2025-03-17 06:06:58,877 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2025-03-17 06:06:58,877 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 240 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-17 06:06:58,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 580 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-17 06:06:58,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2025-03-17 06:06:58,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 155. [2025-03-17 06:06:58,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 133 states have (on average 1.4360902255639099) internal successors, (191), 133 states have internal predecessors, (191), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-17 06:06:58,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 231 transitions. [2025-03-17 06:06:58,893 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 231 transitions. Word has length 163 [2025-03-17 06:06:58,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:06:58,894 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 231 transitions. [2025-03-17 06:06:58,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.0) internal successors, (66), 13 states have internal predecessors, (66), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) [2025-03-17 06:06:58,894 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 231 transitions. [2025-03-17 06:06:58,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2025-03-17 06:06:58,895 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:06:58,895 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:06:58,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 06:06:58,895 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:06:58,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:06:58,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1101725249, now seen corresponding path program 1 times [2025-03-17 06:06:58,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:06:58,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900392914] [2025-03-17 06:06:58,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:06:58,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:06:58,923 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-17 06:06:58,987 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-17 06:06:58,988 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:06:58,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:07:02,102 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-17 06:07:02,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:07:02,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900392914] [2025-03-17 06:07:02,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900392914] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:07:02,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:07:02,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2025-03-17 06:07:02,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881388715] [2025-03-17 06:07:02,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:07:02,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-17 06:07:02,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:07:02,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-17 06:07:02,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2025-03-17 06:07:02,104 INFO L87 Difference]: Start difference. First operand 155 states and 231 transitions. Second operand has 15 states, 14 states have (on average 4.714285714285714) internal successors, (66), 15 states have internal predecessors, (66), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2025-03-17 06:07:04,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:07:04,367 INFO L93 Difference]: Finished difference Result 341 states and 505 transitions. [2025-03-17 06:07:04,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 06:07:04,368 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.714285714285714) internal successors, (66), 15 states have internal predecessors, (66), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) Word has length 163 [2025-03-17 06:07:04,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:07:04,371 INFO L225 Difference]: With dead ends: 341 [2025-03-17 06:07:04,372 INFO L226 Difference]: Without dead ends: 187 [2025-03-17 06:07:04,373 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2025-03-17 06:07:04,373 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 381 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-17 06:07:04,373 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 976 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-17 06:07:04,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2025-03-17 06:07:04,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 144. [2025-03-17 06:07:04,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 122 states have (on average 1.4262295081967213) internal successors, (174), 122 states have internal predecessors, (174), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-17 06:07:04,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 214 transitions. [2025-03-17 06:07:04,393 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 214 transitions. Word has length 163 [2025-03-17 06:07:04,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:07:04,393 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 214 transitions. [2025-03-17 06:07:04,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.714285714285714) internal successors, (66), 15 states have internal predecessors, (66), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2025-03-17 06:07:04,393 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 214 transitions. [2025-03-17 06:07:04,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2025-03-17 06:07:04,394 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:07:04,394 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:07:04,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 06:07:04,395 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:07:04,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:07:04,395 INFO L85 PathProgramCache]: Analyzing trace with hash 270705179, now seen corresponding path program 1 times [2025-03-17 06:07:04,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:07:04,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655207931] [2025-03-17 06:07:04,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:07:04,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:07:04,426 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-17 06:07:04,478 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-17 06:07:04,478 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:07:04,478 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:07:06,454 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-17 06:07:06,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:07:06,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655207931] [2025-03-17 06:07:06,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655207931] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:07:06,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:07:06,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-17 06:07:06,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624442148] [2025-03-17 06:07:06,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:07:06,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 06:07:06,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:07:06,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 06:07:06,456 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2025-03-17 06:07:06,456 INFO L87 Difference]: Start difference. First operand 144 states and 214 transitions. Second operand has 13 states, 12 states have (on average 5.5) internal successors, (66), 13 states have internal predecessors, (66), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2025-03-17 06:07:07,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:07:07,531 INFO L93 Difference]: Finished difference Result 334 states and 494 transitions. [2025-03-17 06:07:07,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 06:07:07,532 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.5) internal successors, (66), 13 states have internal predecessors, (66), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) Word has length 163 [2025-03-17 06:07:07,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:07:07,533 INFO L225 Difference]: With dead ends: 334 [2025-03-17 06:07:07,533 INFO L226 Difference]: Without dead ends: 191 [2025-03-17 06:07:07,535 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2025-03-17 06:07:07,536 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 352 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-17 06:07:07,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 608 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-17 06:07:07,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2025-03-17 06:07:07,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 155. [2025-03-17 06:07:07,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 133 states have (on average 1.443609022556391) internal successors, (192), 133 states have internal predecessors, (192), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-17 06:07:07,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 232 transitions. [2025-03-17 06:07:07,555 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 232 transitions. Word has length 163 [2025-03-17 06:07:07,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:07:07,555 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 232 transitions. [2025-03-17 06:07:07,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.5) internal successors, (66), 13 states have internal predecessors, (66), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2025-03-17 06:07:07,556 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 232 transitions. [2025-03-17 06:07:07,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2025-03-17 06:07:07,556 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:07:07,557 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:07:07,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 06:07:07,557 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:07:07,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:07:07,557 INFO L85 PathProgramCache]: Analyzing trace with hash -22697828, now seen corresponding path program 1 times [2025-03-17 06:07:07,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:07:07,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664658815] [2025-03-17 06:07:07,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:07:07,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:07:07,587 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-17 06:07:07,673 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-17 06:07:07,673 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:07:07,673 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:07:10,708 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-17 06:07:10,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:07:10,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664658815] [2025-03-17 06:07:10,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664658815] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:07:10,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:07:10,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-17 06:07:10,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517735865] [2025-03-17 06:07:10,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:07:10,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 06:07:10,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:07:10,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 06:07:10,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2025-03-17 06:07:10,710 INFO L87 Difference]: Start difference. First operand 155 states and 232 transitions. Second operand has 13 states, 11 states have (on average 6.0) internal successors, (66), 13 states have internal predecessors, (66), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) [2025-03-17 06:07:11,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:07:11,715 INFO L93 Difference]: Finished difference Result 341 states and 506 transitions. [2025-03-17 06:07:11,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 06:07:11,716 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.0) internal successors, (66), 13 states have internal predecessors, (66), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) Word has length 163 [2025-03-17 06:07:11,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:07:11,717 INFO L225 Difference]: With dead ends: 341 [2025-03-17 06:07:11,717 INFO L226 Difference]: Without dead ends: 187 [2025-03-17 06:07:11,718 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2025-03-17 06:07:11,718 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 342 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-17 06:07:11,718 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 517 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-17 06:07:11,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2025-03-17 06:07:11,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 153. [2025-03-17 06:07:11,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 131 states have (on average 1.4427480916030535) internal successors, (189), 131 states have internal predecessors, (189), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-17 06:07:11,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 229 transitions. [2025-03-17 06:07:11,731 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 229 transitions. Word has length 163 [2025-03-17 06:07:11,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:07:11,732 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 229 transitions. [2025-03-17 06:07:11,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.0) internal successors, (66), 13 states have internal predecessors, (66), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) [2025-03-17 06:07:11,732 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 229 transitions. [2025-03-17 06:07:11,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2025-03-17 06:07:11,732 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:07:11,733 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:07:11,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 06:07:11,733 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:07:11,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:07:11,733 INFO L85 PathProgramCache]: Analyzing trace with hash 336356344, now seen corresponding path program 1 times [2025-03-17 06:07:11,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:07:11,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370261270] [2025-03-17 06:07:11,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:07:11,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:07:11,759 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-17 06:07:11,766 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-17 06:07:11,766 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:07:11,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:07:11,923 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2025-03-17 06:07:11,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:07:11,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370261270] [2025-03-17 06:07:11,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370261270] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:07:11,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5652766] [2025-03-17 06:07:11,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:07:11,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:07:11,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:07:11,927 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:07:11,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 06:07:12,085 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-17 06:07:12,141 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-17 06:07:12,141 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:07:12,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:07:12,145 INFO L256 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 06:07:12,148 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:07:12,177 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-17 06:07:12,177 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:07:12,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5652766] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:07:12,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:07:12,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2025-03-17 06:07:12,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953697293] [2025-03-17 06:07:12,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:07:12,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:07:12,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:07:12,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:07:12,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:07:12,179 INFO L87 Difference]: Start difference. First operand 153 states and 229 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-03-17 06:07:12,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:07:12,228 INFO L93 Difference]: Finished difference Result 308 states and 461 transitions. [2025-03-17 06:07:12,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:07:12,228 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 163 [2025-03-17 06:07:12,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:07:12,229 INFO L225 Difference]: With dead ends: 308 [2025-03-17 06:07:12,229 INFO L226 Difference]: Without dead ends: 156 [2025-03-17 06:07:12,230 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:07:12,231 INFO L435 NwaCegarLoop]: 169 mSDtfsCounter, 0 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 06:07:12,231 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 659 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 06:07:12,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2025-03-17 06:07:12,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2025-03-17 06:07:12,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 134 states have (on average 1.4328358208955223) internal successors, (192), 134 states have internal predecessors, (192), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-17 06:07:12,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 232 transitions. [2025-03-17 06:07:12,245 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 232 transitions. Word has length 163 [2025-03-17 06:07:12,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:07:12,246 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 232 transitions. [2025-03-17 06:07:12,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-03-17 06:07:12,246 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 232 transitions. [2025-03-17 06:07:12,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2025-03-17 06:07:12,247 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:07:12,247 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:07:12,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 06:07:12,448 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,SelfDestructingSolverStorable10 [2025-03-17 06:07:12,448 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:07:12,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:07:12,449 INFO L85 PathProgramCache]: Analyzing trace with hash -661881217, now seen corresponding path program 1 times [2025-03-17 06:07:12,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:07:12,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941158456] [2025-03-17 06:07:12,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:07:12,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:07:12,485 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-17 06:07:12,544 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-17 06:07:12,544 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:07:12,544 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:07:14,367 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-17 06:07:14,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:07:14,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941158456] [2025-03-17 06:07:14,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941158456] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:07:14,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:07:14,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 06:07:14,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465018526] [2025-03-17 06:07:14,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:07:14,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-17 06:07:14,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:07:14,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-17 06:07:14,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-03-17 06:07:14,371 INFO L87 Difference]: Start difference. First operand 156 states and 232 transitions. Second operand has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 10 states have internal predecessors, (66), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2025-03-17 06:07:15,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:07:15,402 INFO L93 Difference]: Finished difference Result 311 states and 463 transitions. [2025-03-17 06:07:15,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 06:07:15,402 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 10 states have internal predecessors, (66), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 163 [2025-03-17 06:07:15,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:07:15,404 INFO L225 Difference]: With dead ends: 311 [2025-03-17 06:07:15,404 INFO L226 Difference]: Without dead ends: 156 [2025-03-17 06:07:15,404 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2025-03-17 06:07:15,404 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 125 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-17 06:07:15,405 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 436 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-17 06:07:15,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2025-03-17 06:07:15,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2025-03-17 06:07:15,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 134 states have (on average 1.4253731343283582) internal successors, (191), 134 states have internal predecessors, (191), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-17 06:07:15,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 231 transitions. [2025-03-17 06:07:15,415 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 231 transitions. Word has length 163 [2025-03-17 06:07:15,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:07:15,415 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 231 transitions. [2025-03-17 06:07:15,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 10 states have internal predecessors, (66), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2025-03-17 06:07:15,415 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 231 transitions. [2025-03-17 06:07:15,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2025-03-17 06:07:15,416 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:07:15,416 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:07:15,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-17 06:07:15,416 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:07:15,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:07:15,417 INFO L85 PathProgramCache]: Analyzing trace with hash 582883264, now seen corresponding path program 1 times [2025-03-17 06:07:15,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:07:15,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133952953] [2025-03-17 06:07:15,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:07:15,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:07:15,458 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-17 06:07:15,516 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-17 06:07:15,517 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:07:15,517 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:07:19,046 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-17 06:07:19,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:07:19,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133952953] [2025-03-17 06:07:19,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133952953] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:07:19,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:07:19,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2025-03-17 06:07:19,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483395801] [2025-03-17 06:07:19,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:07:19,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-17 06:07:19,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:07:19,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-17 06:07:19,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2025-03-17 06:07:19,048 INFO L87 Difference]: Start difference. First operand 156 states and 231 transitions. Second operand has 17 states, 15 states have (on average 4.4) internal successors, (66), 17 states have internal predecessors, (66), 5 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 5 states have call successors, (20) [2025-03-17 06:07:21,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:07:21,474 INFO L93 Difference]: Finished difference Result 397 states and 581 transitions. [2025-03-17 06:07:21,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-17 06:07:21,475 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 4.4) internal successors, (66), 17 states have internal predecessors, (66), 5 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 5 states have call successors, (20) Word has length 163 [2025-03-17 06:07:21,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:07:21,476 INFO L225 Difference]: With dead ends: 397 [2025-03-17 06:07:21,476 INFO L226 Difference]: Without dead ends: 242 [2025-03-17 06:07:21,477 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2025-03-17 06:07:21,477 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 789 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 1256 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-17 06:07:21,477 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 829 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1256 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-17 06:07:21,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2025-03-17 06:07:21,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 158. [2025-03-17 06:07:21,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 136 states have (on average 1.4191176470588236) internal successors, (193), 136 states have internal predecessors, (193), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-17 06:07:21,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 233 transitions. [2025-03-17 06:07:21,496 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 233 transitions. Word has length 163 [2025-03-17 06:07:21,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:07:21,497 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 233 transitions. [2025-03-17 06:07:21,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 4.4) internal successors, (66), 17 states have internal predecessors, (66), 5 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 5 states have call successors, (20) [2025-03-17 06:07:21,497 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 233 transitions. [2025-03-17 06:07:21,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2025-03-17 06:07:21,498 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:07:21,498 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:07:21,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-17 06:07:21,499 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:07:21,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:07:21,499 INFO L85 PathProgramCache]: Analyzing trace with hash 289480257, now seen corresponding path program 1 times [2025-03-17 06:07:21,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:07:21,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861491257] [2025-03-17 06:07:21,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:07:21,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:07:21,532 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-17 06:07:21,567 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-17 06:07:21,567 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:07:21,568 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:07:22,624 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-17 06:07:22,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:07:22,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861491257] [2025-03-17 06:07:22,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861491257] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:07:22,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:07:22,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-17 06:07:22,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839184538] [2025-03-17 06:07:22,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:07:22,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 06:07:22,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:07:22,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 06:07:22,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2025-03-17 06:07:22,625 INFO L87 Difference]: Start difference. First operand 158 states and 233 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2025-03-17 06:07:23,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:07:23,784 INFO L93 Difference]: Finished difference Result 350 states and 512 transitions. [2025-03-17 06:07:23,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 06:07:23,784 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 163 [2025-03-17 06:07:23,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:07:23,785 INFO L225 Difference]: With dead ends: 350 [2025-03-17 06:07:23,785 INFO L226 Difference]: Without dead ends: 193 [2025-03-17 06:07:23,786 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2025-03-17 06:07:23,786 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 223 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-17 06:07:23,786 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 830 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-17 06:07:23,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2025-03-17 06:07:23,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 147. [2025-03-17 06:07:23,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 125 states have (on average 1.408) internal successors, (176), 125 states have internal predecessors, (176), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-17 06:07:23,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 216 transitions. [2025-03-17 06:07:23,797 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 216 transitions. Word has length 163 [2025-03-17 06:07:23,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:07:23,797 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 216 transitions. [2025-03-17 06:07:23,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2025-03-17 06:07:23,797 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 216 transitions. [2025-03-17 06:07:23,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2025-03-17 06:07:23,798 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:07:23,798 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:07:23,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-17 06:07:23,798 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:07:23,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:07:23,798 INFO L85 PathProgramCache]: Analyzing trace with hash 301724986, now seen corresponding path program 1 times [2025-03-17 06:07:23,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:07:23,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087907458] [2025-03-17 06:07:23,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:07:23,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:07:23,824 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-17 06:07:23,880 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-17 06:07:23,881 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:07:23,881 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:07:27,228 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-17 06:07:27,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:07:27,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087907458] [2025-03-17 06:07:27,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087907458] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:07:27,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:07:27,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2025-03-17 06:07:27,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319158063] [2025-03-17 06:07:27,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:07:27,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-17 06:07:27,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:07:27,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-17 06:07:27,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2025-03-17 06:07:27,230 INFO L87 Difference]: Start difference. First operand 147 states and 216 transitions. Second operand has 15 states, 13 states have (on average 5.076923076923077) internal successors, (66), 15 states have internal predecessors, (66), 5 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 5 states have call successors, (20) [2025-03-17 06:07:28,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:07:28,951 INFO L93 Difference]: Finished difference Result 341 states and 498 transitions. [2025-03-17 06:07:28,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 06:07:28,952 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 5.076923076923077) internal successors, (66), 15 states have internal predecessors, (66), 5 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 5 states have call successors, (20) Word has length 163 [2025-03-17 06:07:28,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:07:28,953 INFO L225 Difference]: With dead ends: 341 [2025-03-17 06:07:28,953 INFO L226 Difference]: Without dead ends: 195 [2025-03-17 06:07:28,955 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2025-03-17 06:07:28,956 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 330 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-17 06:07:28,956 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 685 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1069 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-17 06:07:28,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2025-03-17 06:07:28,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 158. [2025-03-17 06:07:28,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 136 states have (on average 1.4191176470588236) internal successors, (193), 136 states have internal predecessors, (193), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-17 06:07:28,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 233 transitions. [2025-03-17 06:07:28,971 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 233 transitions. Word has length 163 [2025-03-17 06:07:28,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:07:28,972 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 233 transitions. [2025-03-17 06:07:28,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 5.076923076923077) internal successors, (66), 15 states have internal predecessors, (66), 5 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 5 states have call successors, (20) [2025-03-17 06:07:28,972 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 233 transitions. [2025-03-17 06:07:28,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2025-03-17 06:07:28,973 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:07:28,973 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:07:28,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-17 06:07:28,973 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:07:28,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:07:28,974 INFO L85 PathProgramCache]: Analyzing trace with hash 8321979, now seen corresponding path program 1 times [2025-03-17 06:07:28,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:07:28,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771588643] [2025-03-17 06:07:28,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:07:28,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:07:29,016 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-17 06:07:29,086 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-17 06:07:29,087 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:07:29,087 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:07:31,251 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-17 06:07:31,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:07:31,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771588643] [2025-03-17 06:07:31,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771588643] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:07:31,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:07:31,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-17 06:07:31,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822069293] [2025-03-17 06:07:31,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:07:31,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 06:07:31,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:07:31,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 06:07:31,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2025-03-17 06:07:31,252 INFO L87 Difference]: Start difference. First operand 158 states and 233 transitions. Second operand has 14 states, 13 states have (on average 5.076923076923077) internal successors, (66), 14 states have internal predecessors, (66), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2025-03-17 06:07:32,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:07:32,823 INFO L93 Difference]: Finished difference Result 352 states and 514 transitions. [2025-03-17 06:07:32,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 06:07:32,824 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.076923076923077) internal successors, (66), 14 states have internal predecessors, (66), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) Word has length 163 [2025-03-17 06:07:32,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:07:32,825 INFO L225 Difference]: With dead ends: 352 [2025-03-17 06:07:32,825 INFO L226 Difference]: Without dead ends: 195 [2025-03-17 06:07:32,826 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2025-03-17 06:07:32,826 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 268 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-17 06:07:32,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 1042 Invalid, 1311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-17 06:07:32,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2025-03-17 06:07:32,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 156. [2025-03-17 06:07:32,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 134 states have (on average 1.4253731343283582) internal successors, (191), 134 states have internal predecessors, (191), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-17 06:07:32,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 231 transitions. [2025-03-17 06:07:32,839 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 231 transitions. Word has length 163 [2025-03-17 06:07:32,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:07:32,839 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 231 transitions. [2025-03-17 06:07:32,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.076923076923077) internal successors, (66), 14 states have internal predecessors, (66), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2025-03-17 06:07:32,840 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 231 transitions. [2025-03-17 06:07:32,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2025-03-17 06:07:32,842 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:07:32,842 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:07:32,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-17 06:07:32,842 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:07:32,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:07:32,842 INFO L85 PathProgramCache]: Analyzing trace with hash -151096163, now seen corresponding path program 1 times [2025-03-17 06:07:32,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:07:32,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828220815] [2025-03-17 06:07:32,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:07:32,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:07:32,871 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-03-17 06:07:32,947 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-03-17 06:07:32,947 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:07:32,948 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:07:34,340 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-17 06:07:34,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:07:34,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828220815] [2025-03-17 06:07:34,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828220815] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:07:34,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:07:34,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2025-03-17 06:07:34,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273732121] [2025-03-17 06:07:34,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:07:34,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-17 06:07:34,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:07:34,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-17 06:07:34,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2025-03-17 06:07:34,343 INFO L87 Difference]: Start difference. First operand 156 states and 231 transitions. Second operand has 15 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-03-17 06:07:35,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:07:35,720 INFO L93 Difference]: Finished difference Result 350 states and 514 transitions. [2025-03-17 06:07:35,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 06:07:35,724 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 165 [2025-03-17 06:07:35,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:07:35,725 INFO L225 Difference]: With dead ends: 350 [2025-03-17 06:07:35,725 INFO L226 Difference]: Without dead ends: 195 [2025-03-17 06:07:35,726 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2025-03-17 06:07:35,726 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 238 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-17 06:07:35,726 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 987 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-17 06:07:35,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2025-03-17 06:07:35,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 158. [2025-03-17 06:07:35,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 136 states have (on average 1.4264705882352942) internal successors, (194), 136 states have internal predecessors, (194), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-17 06:07:35,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 234 transitions. [2025-03-17 06:07:35,745 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 234 transitions. Word has length 165 [2025-03-17 06:07:35,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:07:35,745 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 234 transitions. [2025-03-17 06:07:35,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-03-17 06:07:35,745 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 234 transitions. [2025-03-17 06:07:35,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2025-03-17 06:07:35,746 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:07:35,746 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:07:35,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-17 06:07:35,746 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:07:35,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:07:35,747 INFO L85 PathProgramCache]: Analyzing trace with hash -444499170, now seen corresponding path program 1 times [2025-03-17 06:07:35,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:07:35,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929288638] [2025-03-17 06:07:35,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:07:35,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:07:35,774 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-03-17 06:07:35,862 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-03-17 06:07:35,863 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:07:35,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:07:39,285 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-17 06:07:39,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:07:39,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929288638] [2025-03-17 06:07:39,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929288638] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:07:39,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:07:39,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-17 06:07:39,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108644615] [2025-03-17 06:07:39,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:07:39,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 06:07:39,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:07:39,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 06:07:39,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2025-03-17 06:07:39,286 INFO L87 Difference]: Start difference. First operand 158 states and 234 transitions. Second operand has 14 states, 12 states have (on average 5.666666666666667) internal successors, (68), 14 states have internal predecessors, (68), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20)