./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-12.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-12.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 26d5f48c3aaa4f87ce3b022933cd3bb4d238eb5e6d3164b471af63fd7f3cd88c --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 05:53:34,171 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 05:53:34,225 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 05:53:34,229 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 05:53:34,229 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 05:53:34,252 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 05:53:34,252 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 05:53:34,252 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 05:53:34,252 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 05:53:34,252 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 05:53:34,253 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 05:53:34,253 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 05:53:34,253 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 05:53:34,253 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 05:53:34,253 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 05:53:34,253 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 05:53:34,253 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 05:53:34,253 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 05:53:34,253 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 05:53:34,253 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 05:53:34,253 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 05:53:34,253 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 05:53:34,253 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 05:53:34,253 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 05:53:34,255 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 05:53:34,255 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 05:53:34,255 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 05:53:34,255 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 05:53:34,256 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 05:53:34,256 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 05:53:34,256 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 05:53:34,256 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 05:53:34,256 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 05:53:34,256 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 05:53:34,257 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 05:53:34,257 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 05:53:34,257 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 05:53:34,257 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 05:53:34,257 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 05:53:34,257 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 05:53:34,257 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 05:53:34,257 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 05:53:34,257 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 05:53:34,257 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 -> 26d5f48c3aaa4f87ce3b022933cd3bb4d238eb5e6d3164b471af63fd7f3cd88c [2025-03-17 05:53:34,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 05:53:34,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 05:53:34,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 05:53:34,488 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 05:53:34,488 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 05:53:34,489 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-12.i [2025-03-17 05:53:35,634 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b4677778/1ab82beabab148d287daf99b5c56b0ae/FLAG9bec8fdbb [2025-03-17 05:53:35,915 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 05:53:35,917 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-12.i [2025-03-17 05:53:35,925 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b4677778/1ab82beabab148d287daf99b5c56b0ae/FLAG9bec8fdbb [2025-03-17 05:53:36,212 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b4677778/1ab82beabab148d287daf99b5c56b0ae [2025-03-17 05:53:36,214 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 05:53:36,215 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 05:53:36,216 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 05:53:36,216 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 05:53:36,219 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 05:53:36,219 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 05:53:36" (1/1) ... [2025-03-17 05:53:36,220 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17ff5f86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:53:36, skipping insertion in model container [2025-03-17 05:53:36,220 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 05:53:36" (1/1) ... [2025-03-17 05:53:36,233 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 05:53:36,332 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-12.i[916,929] [2025-03-17 05:53:36,381 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 05:53:36,393 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 05:53:36,402 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-12.i[916,929] [2025-03-17 05:53:36,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 05:53:36,447 INFO L204 MainTranslator]: Completed translation [2025-03-17 05:53:36,449 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:53:36 WrapperNode [2025-03-17 05:53:36,450 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 05:53:36,451 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 05:53:36,451 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 05:53:36,451 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 05:53:36,456 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:53:36" (1/1) ... [2025-03-17 05:53:36,470 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:53:36" (1/1) ... [2025-03-17 05:53:36,514 INFO L138 Inliner]: procedures = 27, calls = 151, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 441 [2025-03-17 05:53:36,516 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 05:53:36,518 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 05:53:36,518 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 05:53:36,518 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 05:53:36,527 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:53:36" (1/1) ... [2025-03-17 05:53:36,527 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:53:36" (1/1) ... [2025-03-17 05:53:36,533 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:53:36" (1/1) ... [2025-03-17 05:53:36,548 INFO L175 MemorySlicer]: Split 124 memory accesses to 2 slices as follows [2, 122]. 98 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 26 writes are split as follows [0, 26]. [2025-03-17 05:53:36,548 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:53:36" (1/1) ... [2025-03-17 05:53:36,548 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:53:36" (1/1) ... [2025-03-17 05:53:36,559 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:53:36" (1/1) ... [2025-03-17 05:53:36,560 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:53:36" (1/1) ... [2025-03-17 05:53:36,562 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:53:36" (1/1) ... [2025-03-17 05:53:36,563 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:53:36" (1/1) ... [2025-03-17 05:53:36,566 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 05:53:36,566 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 05:53:36,566 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 05:53:36,566 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 05:53:36,567 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:53:36" (1/1) ... [2025-03-17 05:53:36,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 05:53:36,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:53:36,599 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 05:53:36,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 05:53:36,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 05:53:36,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-03-17 05:53:36,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-03-17 05:53:36,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 05:53:36,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 05:53:36,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 05:53:36,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 05:53:36,621 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 05:53:36,621 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 05:53:36,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 05:53:36,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 05:53:36,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 05:53:36,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 05:53:36,726 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 05:53:36,728 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 05:53:37,046 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L108: havoc property_#t~mem71#1;havoc property_#t~ite82#1;havoc property_#t~mem72#1;havoc property_#t~mem73#1;havoc property_#t~ite81#1;havoc property_#t~mem74#1;havoc property_#t~mem75#1;havoc property_#t~ite78#1;havoc property_#t~mem77#1;havoc property_#t~mem76#1;havoc property_#t~mem80#1;havoc property_#t~mem79#1;havoc property_#t~mem83#1;havoc property_#t~mem84#1;havoc property_#t~ite105#1;havoc property_#t~mem104#1;havoc property_#t~mem90#1;havoc property_#t~mem85#1;havoc property_#t~mem86#1;havoc property_#t~ite89#1;havoc property_#t~mem87#1;havoc property_#t~mem88#1;havoc property_#t~ite103#1;havoc property_#t~mem96#1;havoc property_#t~mem91#1;havoc property_#t~mem92#1;havoc property_#t~ite95#1;havoc property_#t~mem93#1;havoc property_#t~mem94#1;havoc property_#t~mem102#1;havoc property_#t~mem97#1;havoc property_#t~mem98#1;havoc property_#t~ite101#1;havoc property_#t~mem99#1;havoc property_#t~mem100#1;havoc property_#t~short106#1;havoc property_#t~mem109#1;havoc property_#t~mem107#1;havoc property_#t~mem108#1;havoc property_#t~mem110#1;havoc property_#t~ite126#1;havoc property_#t~mem111#1;havoc property_#t~mem114#1;havoc property_#t~mem112#1;havoc property_#t~mem113#1;havoc property_#t~ite123#1;havoc property_#t~mem120#1;havoc property_#t~mem118#1;havoc property_#t~mem115#1;havoc property_#t~mem116#1;havoc property_#t~short117#1;havoc property_#t~short119#1;havoc property_#t~mem122#1;havoc property_#t~mem121#1;havoc property_#t~mem125#1;havoc property_#t~mem124#1;havoc property_#t~short127#1; [2025-03-17 05:53:37,076 INFO L? ?]: Removed 129 outVars from TransFormulas that were not future-live. [2025-03-17 05:53:37,076 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 05:53:37,082 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 05:53:37,083 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 05:53:37,083 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 05:53:37 BoogieIcfgContainer [2025-03-17 05:53:37,083 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 05:53:37,085 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 05:53:37,085 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 05:53:37,088 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 05:53:37,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 05:53:36" (1/3) ... [2025-03-17 05:53:37,088 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e657abd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 05:53:37, skipping insertion in model container [2025-03-17 05:53:37,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:53:36" (2/3) ... [2025-03-17 05:53:37,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e657abd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 05:53:37, skipping insertion in model container [2025-03-17 05:53:37,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 05:53:37" (3/3) ... [2025-03-17 05:53:37,090 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-12.i [2025-03-17 05:53:37,100 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 05:53:37,101 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-s_file-12.i that has 2 procedures, 92 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-17 05:53:37,147 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 05:53:37,156 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;@2c3f0176, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 05:53:37,157 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 05:53:37,161 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 73 states have (on average 1.4109589041095891) internal successors, (103), 74 states have internal predecessors, (103), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-17 05:53:37,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-03-17 05:53:37,169 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:53:37,170 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:53:37,170 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:53:37,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:53:37,174 INFO L85 PathProgramCache]: Analyzing trace with hash -105191640, now seen corresponding path program 1 times [2025-03-17 05:53:37,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:53:37,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006456601] [2025-03-17 05:53:37,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:53:37,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:53:37,256 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-03-17 05:53:37,283 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-03-17 05:53:37,283 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:53:37,283 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:53:37,405 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2025-03-17 05:53:37,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:53:37,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006456601] [2025-03-17 05:53:37,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006456601] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 05:53:37,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425073365] [2025-03-17 05:53:37,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:53:37,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:53:37,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:53:37,411 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 05:53:37,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 05:53:37,515 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-03-17 05:53:37,610 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-03-17 05:53:37,611 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:53:37,611 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:53:37,615 INFO L256 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 05:53:37,622 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:53:37,640 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2025-03-17 05:53:37,640 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 05:53:37,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425073365] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:53:37,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 05:53:37,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 05:53:37,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037095655] [2025-03-17 05:53:37,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:53:37,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 05:53:37,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:53:37,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 05:53:37,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 05:53:37,668 INFO L87 Difference]: Start difference. First operand has 92 states, 73 states have (on average 1.4109589041095891) internal successors, (103), 74 states have internal predecessors, (103), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-17 05:53:37,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:53:37,688 INFO L93 Difference]: Finished difference Result 175 states and 274 transitions. [2025-03-17 05:53:37,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 05:53:37,690 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 113 [2025-03-17 05:53:37,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:53:37,695 INFO L225 Difference]: With dead ends: 175 [2025-03-17 05:53:37,695 INFO L226 Difference]: Without dead ends: 84 [2025-03-17 05:53:37,698 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 05:53:37,701 INFO L435 NwaCegarLoop]: 119 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, 119 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 05:53:37,701 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 05:53:37,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2025-03-17 05:53:37,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2025-03-17 05:53:37,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 66 states have (on average 1.3181818181818181) internal successors, (87), 66 states have internal predecessors, (87), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-17 05:53:37,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 119 transitions. [2025-03-17 05:53:37,733 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 119 transitions. Word has length 113 [2025-03-17 05:53:37,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:53:37,734 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 119 transitions. [2025-03-17 05:53:37,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-17 05:53:37,734 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 119 transitions. [2025-03-17 05:53:37,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-03-17 05:53:37,735 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:53:37,736 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:53:37,743 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 05:53:37,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-17 05:53:37,936 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:53:37,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:53:37,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1192081096, now seen corresponding path program 1 times [2025-03-17 05:53:37,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:53:37,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549399867] [2025-03-17 05:53:37,937 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:53:37,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:53:37,964 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-03-17 05:53:38,011 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-03-17 05:53:38,013 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:53:38,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:53:38,230 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2025-03-17 05:53:38,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:53:38,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549399867] [2025-03-17 05:53:38,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549399867] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 05:53:38,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526229845] [2025-03-17 05:53:38,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:53:38,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:53:38,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:53:38,233 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 05:53:38,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 05:53:38,324 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-03-17 05:53:38,366 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-03-17 05:53:38,366 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:53:38,366 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:53:38,368 INFO L256 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 05:53:38,371 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:53:38,402 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 05:53:38,403 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 05:53:38,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526229845] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:53:38,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 05:53:38,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2025-03-17 05:53:38,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525041851] [2025-03-17 05:53:38,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:53:38,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 05:53:38,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:53:38,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 05:53:38,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-17 05:53:38,405 INFO L87 Difference]: Start difference. First operand 84 states and 119 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-17 05:53:38,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:53:38,428 INFO L93 Difference]: Finished difference Result 167 states and 237 transitions. [2025-03-17 05:53:38,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 05:53:38,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 113 [2025-03-17 05:53:38,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:53:38,429 INFO L225 Difference]: With dead ends: 167 [2025-03-17 05:53:38,429 INFO L226 Difference]: Without dead ends: 84 [2025-03-17 05:53:38,430 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-17 05:53:38,430 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 0 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 05:53:38,431 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 339 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 05:53:38,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2025-03-17 05:53:38,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2025-03-17 05:53:38,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 66 states have (on average 1.303030303030303) internal successors, (86), 66 states have internal predecessors, (86), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-17 05:53:38,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 118 transitions. [2025-03-17 05:53:38,438 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 118 transitions. Word has length 113 [2025-03-17 05:53:38,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:53:38,439 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 118 transitions. [2025-03-17 05:53:38,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-17 05:53:38,440 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 118 transitions. [2025-03-17 05:53:38,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-03-17 05:53:38,440 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:53:38,441 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:53:38,449 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 05:53:38,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2025-03-17 05:53:38,647 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:53:38,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:53:38,648 INFO L85 PathProgramCache]: Analyzing trace with hash -471340694, now seen corresponding path program 1 times [2025-03-17 05:53:38,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:53:38,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131451984] [2025-03-17 05:53:38,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:53:38,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:53:38,663 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-17 05:53:38,687 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-17 05:53:38,687 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:53:38,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:53:38,860 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2025-03-17 05:53:38,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:53:38,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131451984] [2025-03-17 05:53:38,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131451984] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 05:53:38,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375572577] [2025-03-17 05:53:38,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:53:38,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:53:38,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:53:38,864 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 05:53:38,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 05:53:38,954 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-17 05:53:38,987 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-17 05:53:38,987 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:53:38,987 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:53:38,989 INFO L256 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 05:53:38,991 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:53:39,008 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 05:53:39,009 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 05:53:39,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375572577] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:53:39,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 05:53:39,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2025-03-17 05:53:39,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972335148] [2025-03-17 05:53:39,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:53:39,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 05:53:39,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:53:39,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 05:53:39,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-17 05:53:39,010 INFO L87 Difference]: Start difference. First operand 84 states and 118 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-17 05:53:39,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:53:39,043 INFO L93 Difference]: Finished difference Result 170 states and 239 transitions. [2025-03-17 05:53:39,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 05:53:39,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 115 [2025-03-17 05:53:39,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:53:39,045 INFO L225 Difference]: With dead ends: 170 [2025-03-17 05:53:39,045 INFO L226 Difference]: Without dead ends: 87 [2025-03-17 05:53:39,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-17 05:53:39,046 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 0 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 05:53:39,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 445 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 05:53:39,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2025-03-17 05:53:39,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2025-03-17 05:53:39,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 69 states have (on average 1.289855072463768) internal successors, (89), 69 states have internal predecessors, (89), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-17 05:53:39,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 121 transitions. [2025-03-17 05:53:39,052 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 121 transitions. Word has length 115 [2025-03-17 05:53:39,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:53:39,053 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 121 transitions. [2025-03-17 05:53:39,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-17 05:53:39,053 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 121 transitions. [2025-03-17 05:53:39,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-03-17 05:53:39,054 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:53:39,054 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:53:39,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 05:53:39,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:53:39,255 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:53:39,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:53:39,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1768018622, now seen corresponding path program 1 times [2025-03-17 05:53:39,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:53:39,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959500150] [2025-03-17 05:53:39,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:53:39,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:53:39,268 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-03-17 05:53:39,332 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-03-17 05:53:39,332 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:53:39,333 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:53:40,289 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 05:53:40,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:53:40,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959500150] [2025-03-17 05:53:40,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959500150] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:53:40,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:53:40,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-17 05:53:40,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443936485] [2025-03-17 05:53:40,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:53:40,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 05:53:40,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:53:40,290 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 05:53:40,290 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-17 05:53:40,290 INFO L87 Difference]: Start difference. First operand 87 states and 121 transitions. Second operand has 9 states, 7 states have (on average 5.714285714285714) internal successors, (40), 9 states have internal predecessors, (40), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-17 05:53:40,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:53:40,711 INFO L93 Difference]: Finished difference Result 160 states and 217 transitions. [2025-03-17 05:53:40,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 05:53:40,711 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.714285714285714) internal successors, (40), 9 states have internal predecessors, (40), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 117 [2025-03-17 05:53:40,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:53:40,713 INFO L225 Difference]: With dead ends: 160 [2025-03-17 05:53:40,713 INFO L226 Difference]: Without dead ends: 158 [2025-03-17 05:53:40,713 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2025-03-17 05:53:40,714 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 73 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 05:53:40,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 803 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 05:53:40,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2025-03-17 05:53:40,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 155. [2025-03-17 05:53:40,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 122 states have (on average 1.2540983606557377) internal successors, (153), 123 states have internal predecessors, (153), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2025-03-17 05:53:40,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 213 transitions. [2025-03-17 05:53:40,726 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 213 transitions. Word has length 117 [2025-03-17 05:53:40,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:53:40,726 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 213 transitions. [2025-03-17 05:53:40,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.714285714285714) internal successors, (40), 9 states have internal predecessors, (40), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-17 05:53:40,726 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 213 transitions. [2025-03-17 05:53:40,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2025-03-17 05:53:40,727 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:53:40,728 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:53:40,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 05:53:40,728 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:53:40,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:53:40,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1912178912, now seen corresponding path program 1 times [2025-03-17 05:53:40,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:53:40,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492811708] [2025-03-17 05:53:40,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:53:40,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:53:40,747 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-03-17 05:53:40,844 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-03-17 05:53:40,844 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:53:40,844 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:53:42,176 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 108 proven. 36 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2025-03-17 05:53:42,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:53:42,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492811708] [2025-03-17 05:53:42,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492811708] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 05:53:42,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873530326] [2025-03-17 05:53:42,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:53:42,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:53:42,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:53:42,179 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 05:53:42,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 05:53:42,253 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-03-17 05:53:42,303 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-03-17 05:53:42,303 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:53:42,303 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:53:42,305 INFO L256 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 65 conjuncts are in the unsatisfiable core [2025-03-17 05:53:42,310 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:53:42,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 05:53:42,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2025-03-17 05:53:42,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2025-03-17 05:53:42,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2025-03-17 05:53:42,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2025-03-17 05:53:42,896 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 05:53:42,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 40 [2025-03-17 05:53:43,131 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 05:53:43,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 36 [2025-03-17 05:53:43,217 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 312 proven. 36 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2025-03-17 05:53:43,218 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 05:53:44,148 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 114 proven. 48 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2025-03-17 05:53:44,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873530326] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 05:53:44,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 05:53:44,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 25, 25] total 50 [2025-03-17 05:53:44,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680327981] [2025-03-17 05:53:44,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 05:53:44,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2025-03-17 05:53:44,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:53:44,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2025-03-17 05:53:44,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=403, Invalid=2047, Unknown=0, NotChecked=0, Total=2450 [2025-03-17 05:53:44,151 INFO L87 Difference]: Start difference. First operand 155 states and 213 transitions. Second operand has 50 states, 40 states have (on average 2.75) internal successors, (110), 46 states have internal predecessors, (110), 12 states have call successors, (29), 4 states have call predecessors, (29), 10 states have return successors, (29), 9 states have call predecessors, (29), 12 states have call successors, (29) [2025-03-17 05:53:46,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:53:46,980 INFO L93 Difference]: Finished difference Result 282 states and 352 transitions. [2025-03-17 05:53:46,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2025-03-17 05:53:46,981 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 40 states have (on average 2.75) internal successors, (110), 46 states have internal predecessors, (110), 12 states have call successors, (29), 4 states have call predecessors, (29), 10 states have return successors, (29), 9 states have call predecessors, (29), 12 states have call successors, (29) Word has length 118 [2025-03-17 05:53:46,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:53:46,983 INFO L225 Difference]: With dead ends: 282 [2025-03-17 05:53:46,983 INFO L226 Difference]: Without dead ends: 280 [2025-03-17 05:53:46,986 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 208 SyntacticMatches, 7 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2043 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1369, Invalid=5941, Unknown=0, NotChecked=0, Total=7310 [2025-03-17 05:53:46,987 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 739 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 3117 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 3342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 3117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-17 05:53:46,987 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 1147 Invalid, 3342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 3117 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-17 05:53:46,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2025-03-17 05:53:47,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 183. [2025-03-17 05:53:47,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 143 states have (on average 1.2167832167832169) internal successors, (174), 144 states have internal predecessors, (174), 30 states have call successors, (30), 9 states have call predecessors, (30), 9 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2025-03-17 05:53:47,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 234 transitions. [2025-03-17 05:53:47,009 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 234 transitions. Word has length 118 [2025-03-17 05:53:47,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:53:47,009 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 234 transitions. [2025-03-17 05:53:47,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 40 states have (on average 2.75) internal successors, (110), 46 states have internal predecessors, (110), 12 states have call successors, (29), 4 states have call predecessors, (29), 10 states have return successors, (29), 9 states have call predecessors, (29), 12 states have call successors, (29) [2025-03-17 05:53:47,010 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 234 transitions. [2025-03-17 05:53:47,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2025-03-17 05:53:47,014 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:53:47,015 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:53:47,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-17 05:53:47,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:53:47,215 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:53:47,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:53:47,216 INFO L85 PathProgramCache]: Analyzing trace with hash 269706375, now seen corresponding path program 1 times [2025-03-17 05:53:47,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:53:47,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081315886] [2025-03-17 05:53:47,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:53:47,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:53:47,228 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 119 statements into 1 equivalence classes. [2025-03-17 05:53:47,296 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 119 of 119 statements. [2025-03-17 05:53:47,297 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:53:47,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:53:48,441 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 108 proven. 36 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2025-03-17 05:53:48,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:53:48,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081315886] [2025-03-17 05:53:48,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081315886] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 05:53:48,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435501119] [2025-03-17 05:53:48,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:53:48,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:53:48,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:53:48,444 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 05:53:48,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 05:53:48,521 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 119 statements into 1 equivalence classes. [2025-03-17 05:53:48,569 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 119 of 119 statements. [2025-03-17 05:53:48,570 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:53:48,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:53:48,572 INFO L256 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 63 conjuncts are in the unsatisfiable core [2025-03-17 05:53:48,577 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:53:48,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2025-03-17 05:53:48,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2025-03-17 05:53:48,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2025-03-17 05:53:48,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2025-03-17 05:53:49,188 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 05:53:49,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 45 [2025-03-17 05:53:49,447 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 05:53:49,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 41 [2025-03-17 05:53:49,581 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 312 proven. 36 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2025-03-17 05:53:49,581 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 05:53:50,386 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 114 proven. 48 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2025-03-17 05:53:50,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435501119] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 05:53:50,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 05:53:50,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 26, 26] total 52 [2025-03-17 05:53:50,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265514921] [2025-03-17 05:53:50,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 05:53:50,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2025-03-17 05:53:50,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:53:50,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2025-03-17 05:53:50,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=403, Invalid=2249, Unknown=0, NotChecked=0, Total=2652 [2025-03-17 05:53:50,388 INFO L87 Difference]: Start difference. First operand 183 states and 234 transitions. Second operand has 52 states, 42 states have (on average 2.6666666666666665) internal successors, (112), 48 states have internal predecessors, (112), 12 states have call successors, (29), 4 states have call predecessors, (29), 10 states have return successors, (29), 9 states have call predecessors, (29), 12 states have call successors, (29) [2025-03-17 05:53:52,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:53:52,231 INFO L93 Difference]: Finished difference Result 262 states and 328 transitions. [2025-03-17 05:53:52,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2025-03-17 05:53:52,232 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 42 states have (on average 2.6666666666666665) internal successors, (112), 48 states have internal predecessors, (112), 12 states have call successors, (29), 4 states have call predecessors, (29), 10 states have return successors, (29), 9 states have call predecessors, (29), 12 states have call successors, (29) Word has length 119 [2025-03-17 05:53:52,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:53:52,234 INFO L225 Difference]: With dead ends: 262 [2025-03-17 05:53:52,234 INFO L226 Difference]: Without dead ends: 260 [2025-03-17 05:53:52,236 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 212 SyntacticMatches, 3 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1485 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1113, Invalid=4739, Unknown=0, NotChecked=0, Total=5852 [2025-03-17 05:53:52,237 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 549 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 2435 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 2578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 2435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-17 05:53:52,238 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 870 Invalid, 2578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 2435 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-17 05:53:52,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2025-03-17 05:53:52,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 184. [2025-03-17 05:53:52,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 144 states have (on average 1.2152777777777777) internal successors, (175), 145 states have internal predecessors, (175), 30 states have call successors, (30), 9 states have call predecessors, (30), 9 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2025-03-17 05:53:52,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 235 transitions. [2025-03-17 05:53:52,278 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 235 transitions. Word has length 119 [2025-03-17 05:53:52,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:53:52,278 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 235 transitions. [2025-03-17 05:53:52,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 42 states have (on average 2.6666666666666665) internal successors, (112), 48 states have internal predecessors, (112), 12 states have call successors, (29), 4 states have call predecessors, (29), 10 states have return successors, (29), 9 states have call predecessors, (29), 12 states have call successors, (29) [2025-03-17 05:53:52,279 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 235 transitions. [2025-03-17 05:53:52,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2025-03-17 05:53:52,280 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:53:52,280 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:53:52,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-17 05:53:52,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:53:52,485 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:53:52,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:53:52,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1832091974, now seen corresponding path program 1 times [2025-03-17 05:53:52,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:53:52,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524091118] [2025-03-17 05:53:52,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:53:52,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:53:52,501 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-03-17 05:53:52,549 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-03-17 05:53:52,549 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:53:52,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:53:53,005 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2025-03-17 05:53:53,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:53:53,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524091118] [2025-03-17 05:53:53,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524091118] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 05:53:53,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30638461] [2025-03-17 05:53:53,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:53:53,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:53:53,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:53:53,009 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 05:53:53,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 05:53:53,079 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-03-17 05:53:53,163 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-03-17 05:53:53,163 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:53:53,163 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:53:53,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-17 05:53:53,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:53:53,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2025-03-17 05:53:53,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2025-03-17 05:53:53,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2025-03-17 05:53:53,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2025-03-17 05:53:53,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2025-03-17 05:53:53,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 23 [2025-03-17 05:53:53,324 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 225 proven. 30 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2025-03-17 05:53:53,324 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 05:53:53,506 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2025-03-17 05:53:53,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30638461] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 05:53:53,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 05:53:53,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-03-17 05:53:53,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046828674] [2025-03-17 05:53:53,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 05:53:53,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 05:53:53,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:53:53,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 05:53:53,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-03-17 05:53:53,508 INFO L87 Difference]: Start difference. First operand 184 states and 235 transitions. Second operand has 11 states, 8 states have (on average 6.75) internal successors, (54), 11 states have internal predecessors, (54), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (28), 2 states have call predecessors, (28), 5 states have call successors, (28) [2025-03-17 05:53:53,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:53:53,836 INFO L93 Difference]: Finished difference Result 383 states and 483 transitions. [2025-03-17 05:53:53,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 05:53:53,837 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 6.75) internal successors, (54), 11 states have internal predecessors, (54), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (28), 2 states have call predecessors, (28), 5 states have call successors, (28) Word has length 120 [2025-03-17 05:53:53,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:53:53,840 INFO L225 Difference]: With dead ends: 383 [2025-03-17 05:53:53,840 INFO L226 Difference]: Without dead ends: 200 [2025-03-17 05:53:53,841 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 237 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2025-03-17 05:53:53,841 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 65 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 05:53:53,842 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 214 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 05:53:53,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2025-03-17 05:53:53,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 192. [2025-03-17 05:53:53,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 150 states have (on average 1.2) internal successors, (180), 151 states have internal predecessors, (180), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2025-03-17 05:53:53,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 240 transitions. [2025-03-17 05:53:53,862 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 240 transitions. Word has length 120 [2025-03-17 05:53:53,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:53:53,862 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 240 transitions. [2025-03-17 05:53:53,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 6.75) internal successors, (54), 11 states have internal predecessors, (54), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (28), 2 states have call predecessors, (28), 5 states have call successors, (28) [2025-03-17 05:53:53,862 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 240 transitions. [2025-03-17 05:53:53,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2025-03-17 05:53:53,863 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:53:53,863 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:53:53,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-17 05:53:54,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:53:54,064 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:53:54,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:53:54,065 INFO L85 PathProgramCache]: Analyzing trace with hash -537999999, now seen corresponding path program 1 times [2025-03-17 05:53:54,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:53:54,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878006821] [2025-03-17 05:53:54,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:53:54,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:53:54,076 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-03-17 05:53:54,084 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-03-17 05:53:54,085 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:53:54,085 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:53:54,178 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 05:53:54,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:53:54,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878006821] [2025-03-17 05:53:54,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878006821] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:53:54,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:53:54,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 05:53:54,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795834782] [2025-03-17 05:53:54,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:53:54,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 05:53:54,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:53:54,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 05:53:54,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 05:53:54,179 INFO L87 Difference]: Start difference. First operand 192 states and 240 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-17 05:53:54,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:53:54,336 INFO L93 Difference]: Finished difference Result 443 states and 553 transitions. [2025-03-17 05:53:54,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 05:53:54,340 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 120 [2025-03-17 05:53:54,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:53:54,342 INFO L225 Difference]: With dead ends: 443 [2025-03-17 05:53:54,343 INFO L226 Difference]: Without dead ends: 252 [2025-03-17 05:53:54,343 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 05:53:54,345 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 29 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 05:53:54,345 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 310 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 05:53:54,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2025-03-17 05:53:54,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 213. [2025-03-17 05:53:54,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 171 states have (on average 1.1929824561403508) internal successors, (204), 172 states have internal predecessors, (204), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2025-03-17 05:53:54,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 264 transitions. [2025-03-17 05:53:54,370 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 264 transitions. Word has length 120 [2025-03-17 05:53:54,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:53:54,371 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 264 transitions. [2025-03-17 05:53:54,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-17 05:53:54,372 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 264 transitions. [2025-03-17 05:53:54,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2025-03-17 05:53:54,374 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:53:54,375 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:53:54,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 05:53:54,376 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:53:54,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:53:54,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1589652383, now seen corresponding path program 1 times [2025-03-17 05:53:54,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:53:54,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571947194] [2025-03-17 05:53:54,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:53:54,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:53:54,391 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-03-17 05:53:54,427 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-03-17 05:53:54,428 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:53:54,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:53:54,957 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2025-03-17 05:53:54,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:53:54,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571947194] [2025-03-17 05:53:54,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571947194] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 05:53:54,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017969034] [2025-03-17 05:53:54,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:53:54,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:53:54,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:53:54,963 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 05:53:54,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 05:53:55,074 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-03-17 05:53:55,120 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-03-17 05:53:55,120 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:53:55,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:53:55,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-17 05:53:55,131 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:53:55,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2025-03-17 05:53:55,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2025-03-17 05:53:55,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2025-03-17 05:53:55,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2025-03-17 05:53:55,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2025-03-17 05:53:55,502 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 05:53:55,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2025-03-17 05:53:55,596 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 05:53:55,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 26 [2025-03-17 05:53:55,601 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 225 proven. 30 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2025-03-17 05:53:55,601 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 05:53:55,812 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2025-03-17 05:53:55,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017969034] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 05:53:55,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 05:53:55,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2025-03-17 05:53:55,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739940512] [2025-03-17 05:53:55,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 05:53:55,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-17 05:53:55,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:53:55,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-17 05:53:55,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2025-03-17 05:53:55,814 INFO L87 Difference]: Start difference. First operand 213 states and 264 transitions. Second operand has 16 states, 13 states have (on average 7.153846153846154) internal successors, (93), 16 states have internal predecessors, (93), 7 states have call successors, (33), 3 states have call predecessors, (33), 6 states have return successors, (33), 4 states have call predecessors, (33), 7 states have call successors, (33) [2025-03-17 05:53:56,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:53:56,262 INFO L93 Difference]: Finished difference Result 492 states and 607 transitions. [2025-03-17 05:53:56,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-17 05:53:56,264 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 7.153846153846154) internal successors, (93), 16 states have internal predecessors, (93), 7 states have call successors, (33), 3 states have call predecessors, (33), 6 states have return successors, (33), 4 states have call predecessors, (33), 7 states have call successors, (33) Word has length 121 [2025-03-17 05:53:56,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:53:56,265 INFO L225 Difference]: With dead ends: 492 [2025-03-17 05:53:56,265 INFO L226 Difference]: Without dead ends: 280 [2025-03-17 05:53:56,266 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 234 SyntacticMatches, 7 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2025-03-17 05:53:56,266 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 205 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 05:53:56,266 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 223 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 05:53:56,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2025-03-17 05:53:56,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 213. [2025-03-17 05:53:56,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 171 states have (on average 1.1812865497076024) internal successors, (202), 172 states have internal predecessors, (202), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2025-03-17 05:53:56,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 262 transitions. [2025-03-17 05:53:56,288 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 262 transitions. Word has length 121 [2025-03-17 05:53:56,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:53:56,289 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 262 transitions. [2025-03-17 05:53:56,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 7.153846153846154) internal successors, (93), 16 states have internal predecessors, (93), 7 states have call successors, (33), 3 states have call predecessors, (33), 6 states have return successors, (33), 4 states have call predecessors, (33), 7 states have call successors, (33) [2025-03-17 05:53:56,289 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 262 transitions. [2025-03-17 05:53:56,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2025-03-17 05:53:56,290 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:53:56,290 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:53:56,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-17 05:53:56,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:53:56,491 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:53:56,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:53:56,491 INFO L85 PathProgramCache]: Analyzing trace with hash -314257860, now seen corresponding path program 1 times [2025-03-17 05:53:56,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:53:56,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925298618] [2025-03-17 05:53:56,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:53:56,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:53:56,502 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-03-17 05:53:56,533 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-03-17 05:53:56,533 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:53:56,533 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 05:53:56,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1013112490] [2025-03-17 05:53:56,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:53:56,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:53:56,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:53:56,537 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 05:53:56,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-17 05:53:56,624 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-03-17 05:53:56,715 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-03-17 05:53:56,716 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:53:56,716 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:53:56,717 INFO L256 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-17 05:53:56,721 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:53:56,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 59 [2025-03-17 05:53:56,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 84 [2025-03-17 05:53:57,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 84 [2025-03-17 05:53:57,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 88 [2025-03-17 05:53:57,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 92 [2025-03-17 05:53:58,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 96 [2025-03-17 05:53:58,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 100 [2025-03-17 05:53:58,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 104 [2025-03-17 05:53:59,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 108 [2025-03-17 05:53:59,957 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 432 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-03-17 05:53:59,958 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 05:54:00,328 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 05:54:00,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:54:00,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925298618] [2025-03-17 05:54:00,329 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-17 05:54:00,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013112490] [2025-03-17 05:54:00,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013112490] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-17 05:54:00,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 05:54:00,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2025-03-17 05:54:00,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720302437] [2025-03-17 05:54:00,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:54:00,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 05:54:00,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:54:00,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 05:54:00,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2025-03-17 05:54:00,330 INFO L87 Difference]: Start difference. First operand 213 states and 262 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-17 05:54:00,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:54:00,599 INFO L93 Difference]: Finished difference Result 573 states and 700 transitions. [2025-03-17 05:54:00,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 05:54:00,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 122 [2025-03-17 05:54:00,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:54:00,601 INFO L225 Difference]: With dead ends: 573 [2025-03-17 05:54:00,602 INFO L226 Difference]: Without dead ends: 361 [2025-03-17 05:54:00,603 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 230 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2025-03-17 05:54:00,603 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 65 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 05:54:00,604 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 212 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 05:54:00,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2025-03-17 05:54:00,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 349. [2025-03-17 05:54:00,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 266 states have (on average 1.1390977443609023) internal successors, (303), 268 states have internal predecessors, (303), 60 states have call successors, (60), 22 states have call predecessors, (60), 22 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2025-03-17 05:54:00,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 423 transitions. [2025-03-17 05:54:00,634 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 423 transitions. Word has length 122 [2025-03-17 05:54:00,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:54:00,634 INFO L471 AbstractCegarLoop]: Abstraction has 349 states and 423 transitions. [2025-03-17 05:54:00,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-17 05:54:00,634 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 423 transitions. [2025-03-17 05:54:00,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2025-03-17 05:54:00,635 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:54:00,635 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:54:00,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-17 05:54:00,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-17 05:54:00,836 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:54:00,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:54:00,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1039213021, now seen corresponding path program 1 times [2025-03-17 05:54:00,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:54:00,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922817537] [2025-03-17 05:54:00,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:00,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:54:00,848 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-03-17 05:54:00,878 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-03-17 05:54:00,879 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:00,879 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 05:54:00,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1448507341] [2025-03-17 05:54:00,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:00,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:54:00,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:54:00,882 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 05:54:00,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-17 05:54:00,971 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-03-17 05:54:01,029 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-03-17 05:54:01,029 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:01,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:54:01,032 INFO L256 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-03-17 05:54:01,035 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:54:01,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 59 [2025-03-17 05:54:01,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 84 [2025-03-17 05:54:01,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 84 [2025-03-17 05:54:01,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 88 [2025-03-17 05:54:01,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 92 [2025-03-17 05:54:02,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 96 [2025-03-17 05:54:02,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 100 [2025-03-17 05:54:03,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 104 [2025-03-17 05:54:03,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 108 [2025-03-17 05:54:04,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 117 [2025-03-17 05:54:04,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 117 [2025-03-17 05:54:04,727 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 432 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-03-17 05:54:04,728 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 05:54:05,706 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 05:54:05,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:54:05,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922817537] [2025-03-17 05:54:05,707 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-17 05:54:05,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448507341] [2025-03-17 05:54:05,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448507341] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-17 05:54:05,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 05:54:05,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2025-03-17 05:54:05,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333901341] [2025-03-17 05:54:05,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:54:05,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 05:54:05,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:54:05,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 05:54:05,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2025-03-17 05:54:05,708 INFO L87 Difference]: Start difference. First operand 349 states and 423 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-17 05:54:06,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:54:06,097 INFO L93 Difference]: Finished difference Result 651 states and 791 transitions. [2025-03-17 05:54:06,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 05:54:06,098 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 123 [2025-03-17 05:54:06,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:54:06,102 INFO L225 Difference]: With dead ends: 651 [2025-03-17 05:54:06,102 INFO L226 Difference]: Without dead ends: 347 [2025-03-17 05:54:06,103 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 228 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2025-03-17 05:54:06,103 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 65 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 05:54:06,104 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 214 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 05:54:06,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2025-03-17 05:54:06,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 340. [2025-03-17 05:54:06,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 257 states have (on average 1.132295719844358) internal successors, (291), 259 states have internal predecessors, (291), 60 states have call successors, (60), 22 states have call predecessors, (60), 22 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2025-03-17 05:54:06,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 411 transitions. [2025-03-17 05:54:06,136 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 411 transitions. Word has length 123 [2025-03-17 05:54:06,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:54:06,137 INFO L471 AbstractCegarLoop]: Abstraction has 340 states and 411 transitions. [2025-03-17 05:54:06,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-17 05:54:06,137 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 411 transitions. [2025-03-17 05:54:06,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-17 05:54:06,139 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:54:06,139 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:54:06,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-17 05:54:06,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:54:06,340 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:54:06,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:54:06,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1476794537, now seen corresponding path program 1 times [2025-03-17 05:54:06,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:54:06,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450093640] [2025-03-17 05:54:06,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:06,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:54:06,352 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-17 05:54:06,385 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-17 05:54:06,385 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:06,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:54:07,301 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 05:54:07,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:54:07,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450093640] [2025-03-17 05:54:07,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450093640] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:54:07,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:54:07,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-17 05:54:07,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980479373] [2025-03-17 05:54:07,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:54:07,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 05:54:07,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:54:07,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 05:54:07,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2025-03-17 05:54:07,303 INFO L87 Difference]: Start difference. First operand 340 states and 411 transitions. Second operand has 12 states, 8 states have (on average 6.0) internal successors, (48), 12 states have internal predecessors, (48), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 5 states have call successors, (16) [2025-03-17 05:54:08,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:54:08,096 INFO L93 Difference]: Finished difference Result 702 states and 856 transitions. [2025-03-17 05:54:08,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 05:54:08,097 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 8 states have (on average 6.0) internal successors, (48), 12 states have internal predecessors, (48), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 5 states have call successors, (16) Word has length 125 [2025-03-17 05:54:08,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:54:08,100 INFO L225 Difference]: With dead ends: 702 [2025-03-17 05:54:08,100 INFO L226 Difference]: Without dead ends: 490 [2025-03-17 05:54:08,102 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2025-03-17 05:54:08,103 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 97 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-17 05:54:08,103 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 667 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-17 05:54:08,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2025-03-17 05:54:08,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 369. [2025-03-17 05:54:08,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 286 states have (on average 1.1503496503496504) internal successors, (329), 288 states have internal predecessors, (329), 60 states have call successors, (60), 22 states have call predecessors, (60), 22 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2025-03-17 05:54:08,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 449 transitions. [2025-03-17 05:54:08,142 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 449 transitions. Word has length 125 [2025-03-17 05:54:08,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:54:08,142 INFO L471 AbstractCegarLoop]: Abstraction has 369 states and 449 transitions. [2025-03-17 05:54:08,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 8 states have (on average 6.0) internal successors, (48), 12 states have internal predecessors, (48), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 5 states have call successors, (16) [2025-03-17 05:54:08,143 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 449 transitions. [2025-03-17 05:54:08,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-17 05:54:08,143 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:54:08,143 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:54:08,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-17 05:54:08,144 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:54:08,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:54:08,144 INFO L85 PathProgramCache]: Analyzing trace with hash 841980883, now seen corresponding path program 1 times [2025-03-17 05:54:08,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:54:08,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835697143] [2025-03-17 05:54:08,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:08,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:54:08,154 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-17 05:54:08,185 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-17 05:54:08,185 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:08,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:54:08,938 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 05:54:08,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:54:08,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835697143] [2025-03-17 05:54:08,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835697143] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:54:08,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:54:08,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2025-03-17 05:54:08,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800394915] [2025-03-17 05:54:08,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:54:08,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-17 05:54:08,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:54:08,939 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-17 05:54:08,939 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2025-03-17 05:54:08,939 INFO L87 Difference]: Start difference. First operand 369 states and 449 transitions. Second operand has 18 states, 16 states have (on average 3.0) internal successors, (48), 18 states have internal predecessors, (48), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-17 05:54:09,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:54:09,837 INFO L93 Difference]: Finished difference Result 793 states and 970 transitions. [2025-03-17 05:54:09,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-17 05:54:09,837 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.0) internal successors, (48), 18 states have internal predecessors, (48), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 125 [2025-03-17 05:54:09,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:54:09,840 INFO L225 Difference]: With dead ends: 793 [2025-03-17 05:54:09,840 INFO L226 Difference]: Without dead ends: 552 [2025-03-17 05:54:09,841 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2025-03-17 05:54:09,841 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 74 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 1228 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-17 05:54:09,841 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 1215 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1228 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-17 05:54:09,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2025-03-17 05:54:09,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 429. [2025-03-17 05:54:09,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 346 states have (on average 1.176300578034682) internal successors, (407), 348 states have internal predecessors, (407), 60 states have call successors, (60), 22 states have call predecessors, (60), 22 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2025-03-17 05:54:09,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 527 transitions. [2025-03-17 05:54:09,890 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 527 transitions. Word has length 125 [2025-03-17 05:54:09,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:54:09,891 INFO L471 AbstractCegarLoop]: Abstraction has 429 states and 527 transitions. [2025-03-17 05:54:09,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.0) internal successors, (48), 18 states have internal predecessors, (48), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-17 05:54:09,891 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 527 transitions. [2025-03-17 05:54:09,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-17 05:54:09,893 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:54:09,893 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:54:09,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-17 05:54:09,894 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:54:09,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:54:09,894 INFO L85 PathProgramCache]: Analyzing trace with hash 645467378, now seen corresponding path program 1 times [2025-03-17 05:54:09,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:54:09,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345914081] [2025-03-17 05:54:09,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:09,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:54:09,906 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-17 05:54:09,934 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-17 05:54:09,934 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:09,934 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:54:10,263 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 05:54:10,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:54:10,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345914081] [2025-03-17 05:54:10,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345914081] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:54:10,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:54:10,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 05:54:10,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913991651] [2025-03-17 05:54:10,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:54:10,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 05:54:10,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:54:10,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 05:54:10,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-17 05:54:10,265 INFO L87 Difference]: Start difference. First operand 429 states and 527 transitions. Second operand has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-17 05:54:10,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:54:10,840 INFO L93 Difference]: Finished difference Result 1058 states and 1301 transitions. [2025-03-17 05:54:10,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 05:54:10,841 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 125 [2025-03-17 05:54:10,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:54:10,845 INFO L225 Difference]: With dead ends: 1058 [2025-03-17 05:54:10,846 INFO L226 Difference]: Without dead ends: 757 [2025-03-17 05:54:10,847 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-03-17 05:54:10,847 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 138 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 05:54:10,848 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 523 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 05:54:10,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2025-03-17 05:54:10,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 749. [2025-03-17 05:54:10,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 601 states have (on average 1.1747088186356074) internal successors, (706), 607 states have internal predecessors, (706), 104 states have call successors, (104), 43 states have call predecessors, (104), 43 states have return successors, (104), 98 states have call predecessors, (104), 104 states have call successors, (104) [2025-03-17 05:54:10,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 914 transitions. [2025-03-17 05:54:10,912 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 914 transitions. Word has length 125 [2025-03-17 05:54:10,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:54:10,912 INFO L471 AbstractCegarLoop]: Abstraction has 749 states and 914 transitions. [2025-03-17 05:54:10,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-17 05:54:10,912 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 914 transitions. [2025-03-17 05:54:10,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-17 05:54:10,913 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:54:10,913 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:54:10,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-17 05:54:10,913 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:54:10,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:54:10,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1347711818, now seen corresponding path program 1 times [2025-03-17 05:54:10,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:54:10,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088125637] [2025-03-17 05:54:10,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:10,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:54:10,928 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-17 05:54:10,954 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-17 05:54:10,954 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:10,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:54:11,493 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 05:54:11,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:54:11,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088125637] [2025-03-17 05:54:11,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088125637] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:54:11,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:54:11,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-17 05:54:11,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259857324] [2025-03-17 05:54:11,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:54:11,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 05:54:11,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:54:11,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 05:54:11,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-17 05:54:11,495 INFO L87 Difference]: Start difference. First operand 749 states and 914 transitions. Second operand has 9 states, 7 states have (on average 6.857142857142857) internal successors, (48), 9 states have internal predecessors, (48), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-17 05:54:12,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:54:12,175 INFO L93 Difference]: Finished difference Result 1640 states and 1986 transitions. [2025-03-17 05:54:12,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 05:54:12,176 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 6.857142857142857) internal successors, (48), 9 states have internal predecessors, (48), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 125 [2025-03-17 05:54:12,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:54:12,180 INFO L225 Difference]: With dead ends: 1640 [2025-03-17 05:54:12,180 INFO L226 Difference]: Without dead ends: 1023 [2025-03-17 05:54:12,181 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-03-17 05:54:12,182 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 127 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-17 05:54:12,182 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 570 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-17 05:54:12,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2025-03-17 05:54:12,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 630. [2025-03-17 05:54:12,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 509 states have (on average 1.1827111984282908) internal successors, (602), 513 states have internal predecessors, (602), 84 states have call successors, (84), 36 states have call predecessors, (84), 36 states have return successors, (84), 80 states have call predecessors, (84), 84 states have call successors, (84) [2025-03-17 05:54:12,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 770 transitions. [2025-03-17 05:54:12,240 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 770 transitions. Word has length 125 [2025-03-17 05:54:12,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:54:12,240 INFO L471 AbstractCegarLoop]: Abstraction has 630 states and 770 transitions. [2025-03-17 05:54:12,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 6.857142857142857) internal successors, (48), 9 states have internal predecessors, (48), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-17 05:54:12,240 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 770 transitions. [2025-03-17 05:54:12,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-17 05:54:12,241 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:54:12,241 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:54:12,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-17 05:54:12,241 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:54:12,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:54:12,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1544225323, now seen corresponding path program 1 times [2025-03-17 05:54:12,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:54:12,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609673978] [2025-03-17 05:54:12,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:12,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:54:12,252 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-17 05:54:12,281 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-17 05:54:12,281 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:12,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:54:12,684 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 05:54:12,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:54:12,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609673978] [2025-03-17 05:54:12,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609673978] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:54:12,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:54:12,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 05:54:12,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764126865] [2025-03-17 05:54:12,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:54:12,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 05:54:12,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:54:12,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 05:54:12,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-17 05:54:12,686 INFO L87 Difference]: Start difference. First operand 630 states and 770 transitions. Second operand has 7 states, 5 states have (on average 9.6) internal successors, (48), 7 states have internal predecessors, (48), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-17 05:54:13,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:54:13,116 INFO L93 Difference]: Finished difference Result 1257 states and 1532 transitions. [2025-03-17 05:54:13,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 05:54:13,117 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 9.6) internal successors, (48), 7 states have internal predecessors, (48), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 125 [2025-03-17 05:54:13,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:54:13,120 INFO L225 Difference]: With dead ends: 1257 [2025-03-17 05:54:13,121 INFO L226 Difference]: Without dead ends: 763 [2025-03-17 05:54:13,122 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-17 05:54:13,122 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 71 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 05:54:13,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 519 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 05:54:13,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2025-03-17 05:54:13,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 620. [2025-03-17 05:54:13,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 499 states have (on average 1.1583166332665331) internal successors, (578), 503 states have internal predecessors, (578), 84 states have call successors, (84), 36 states have call predecessors, (84), 36 states have return successors, (84), 80 states have call predecessors, (84), 84 states have call successors, (84) [2025-03-17 05:54:13,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 746 transitions. [2025-03-17 05:54:13,193 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 746 transitions. Word has length 125 [2025-03-17 05:54:13,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:54:13,193 INFO L471 AbstractCegarLoop]: Abstraction has 620 states and 746 transitions. [2025-03-17 05:54:13,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 9.6) internal successors, (48), 7 states have internal predecessors, (48), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-17 05:54:13,193 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 746 transitions. [2025-03-17 05:54:13,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-17 05:54:13,195 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:54:13,195 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:54:13,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-17 05:54:13,195 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:54:13,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:54:13,196 INFO L85 PathProgramCache]: Analyzing trace with hash 774974130, now seen corresponding path program 1 times [2025-03-17 05:54:13,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:54:13,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676627529] [2025-03-17 05:54:13,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:13,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:54:13,206 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-17 05:54:13,221 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-17 05:54:13,221 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:13,221 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:54:13,488 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 05:54:13,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:54:13,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676627529] [2025-03-17 05:54:13,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676627529] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:54:13,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:54:13,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 05:54:13,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365029661] [2025-03-17 05:54:13,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:54:13,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 05:54:13,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:54:13,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 05:54:13,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 05:54:13,491 INFO L87 Difference]: Start difference. First operand 620 states and 746 transitions. Second operand has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-17 05:54:13,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:54:13,877 INFO L93 Difference]: Finished difference Result 1220 states and 1470 transitions. [2025-03-17 05:54:13,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 05:54:13,878 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 125 [2025-03-17 05:54:13,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:54:13,881 INFO L225 Difference]: With dead ends: 1220 [2025-03-17 05:54:13,881 INFO L226 Difference]: Without dead ends: 736 [2025-03-17 05:54:13,882 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-17 05:54:13,882 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 80 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 05:54:13,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 460 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 05:54:13,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2025-03-17 05:54:13,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 593. [2025-03-17 05:54:13,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 472 states have (on average 1.1546610169491525) internal successors, (545), 476 states have internal predecessors, (545), 84 states have call successors, (84), 36 states have call predecessors, (84), 36 states have return successors, (84), 80 states have call predecessors, (84), 84 states have call successors, (84) [2025-03-17 05:54:13,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 713 transitions. [2025-03-17 05:54:13,967 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 713 transitions. Word has length 125 [2025-03-17 05:54:13,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:54:13,967 INFO L471 AbstractCegarLoop]: Abstraction has 593 states and 713 transitions. [2025-03-17 05:54:13,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-17 05:54:13,967 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 713 transitions. [2025-03-17 05:54:13,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-17 05:54:13,968 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:54:13,968 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:54:13,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-17 05:54:13,968 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:54:13,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:54:13,969 INFO L85 PathProgramCache]: Analyzing trace with hash -779633701, now seen corresponding path program 1 times [2025-03-17 05:54:13,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:54:13,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358598940] [2025-03-17 05:54:13,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:13,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:54:13,979 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-17 05:54:14,008 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-17 05:54:14,008 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:14,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:54:14,921 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 05:54:14,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:54:14,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358598940] [2025-03-17 05:54:14,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358598940] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:54:14,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:54:14,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2025-03-17 05:54:14,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826850479] [2025-03-17 05:54:14,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:54:14,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-17 05:54:14,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:54:14,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-17 05:54:14,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2025-03-17 05:54:14,924 INFO L87 Difference]: Start difference. First operand 593 states and 713 transitions. Second operand has 18 states, 16 states have (on average 3.0) internal successors, (48), 18 states have internal predecessors, (48), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-17 05:54:15,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:54:15,775 INFO L93 Difference]: Finished difference Result 1372 states and 1653 transitions. [2025-03-17 05:54:15,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-17 05:54:15,775 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.0) internal successors, (48), 18 states have internal predecessors, (48), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 125 [2025-03-17 05:54:15,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:54:15,778 INFO L225 Difference]: With dead ends: 1372 [2025-03-17 05:54:15,779 INFO L226 Difference]: Without dead ends: 915 [2025-03-17 05:54:15,780 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2025-03-17 05:54:15,780 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 74 mSDsluCounter, 1321 mSDsCounter, 0 mSdLazyCounter, 1465 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-17 05:54:15,780 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 1456 Invalid, 1472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1465 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-17 05:54:15,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2025-03-17 05:54:15,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 655. [2025-03-17 05:54:15,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 534 states have (on average 1.1741573033707866) internal successors, (627), 538 states have internal predecessors, (627), 84 states have call successors, (84), 36 states have call predecessors, (84), 36 states have return successors, (84), 80 states have call predecessors, (84), 84 states have call successors, (84) [2025-03-17 05:54:15,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 795 transitions. [2025-03-17 05:54:15,839 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 795 transitions. Word has length 125 [2025-03-17 05:54:15,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:54:15,839 INFO L471 AbstractCegarLoop]: Abstraction has 655 states and 795 transitions. [2025-03-17 05:54:15,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.0) internal successors, (48), 18 states have internal predecessors, (48), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-17 05:54:15,840 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 795 transitions. [2025-03-17 05:54:15,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-17 05:54:15,840 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:54:15,841 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:54:15,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-17 05:54:15,842 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:54:15,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:54:15,842 INFO L85 PathProgramCache]: Analyzing trace with hash -976147206, now seen corresponding path program 1 times [2025-03-17 05:54:15,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:54:15,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425472427] [2025-03-17 05:54:15,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:15,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:54:15,860 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-17 05:54:15,874 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-17 05:54:15,875 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:15,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:54:16,190 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 05:54:16,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:54:16,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425472427] [2025-03-17 05:54:16,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425472427] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:54:16,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:54:16,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 05:54:16,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969975049] [2025-03-17 05:54:16,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:54:16,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 05:54:16,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:54:16,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 05:54:16,191 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-17 05:54:16,192 INFO L87 Difference]: Start difference. First operand 655 states and 795 transitions. Second operand has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-17 05:54:16,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:54:16,716 INFO L93 Difference]: Finished difference Result 1297 states and 1573 transitions. [2025-03-17 05:54:16,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 05:54:16,717 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 125 [2025-03-17 05:54:16,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:54:16,719 INFO L225 Difference]: With dead ends: 1297 [2025-03-17 05:54:16,719 INFO L226 Difference]: Without dead ends: 778 [2025-03-17 05:54:16,720 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-03-17 05:54:16,720 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 131 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 05:54:16,721 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 504 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 05:54:16,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2025-03-17 05:54:16,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 655. [2025-03-17 05:54:16,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 534 states have (on average 1.1666666666666667) internal successors, (623), 538 states have internal predecessors, (623), 84 states have call successors, (84), 36 states have call predecessors, (84), 36 states have return successors, (84), 80 states have call predecessors, (84), 84 states have call successors, (84) [2025-03-17 05:54:16,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 791 transitions. [2025-03-17 05:54:16,780 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 791 transitions. Word has length 125 [2025-03-17 05:54:16,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:54:16,780 INFO L471 AbstractCegarLoop]: Abstraction has 655 states and 791 transitions. [2025-03-17 05:54:16,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-17 05:54:16,780 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 791 transitions. [2025-03-17 05:54:16,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-17 05:54:16,781 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:54:16,781 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:54:16,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-17 05:54:16,781 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:54:16,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:54:16,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1539141719, now seen corresponding path program 1 times [2025-03-17 05:54:16,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:54:16,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854085012] [2025-03-17 05:54:16,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:16,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:54:16,793 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-17 05:54:16,815 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-17 05:54:16,815 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:16,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:54:17,669 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 05:54:17,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:54:17,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854085012] [2025-03-17 05:54:17,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854085012] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:54:17,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:54:17,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 05:54:17,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367455641] [2025-03-17 05:54:17,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:54:17,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-17 05:54:17,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:54:17,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-17 05:54:17,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-17 05:54:17,673 INFO L87 Difference]: Start difference. First operand 655 states and 791 transitions. Second operand has 10 states, 7 states have (on average 6.857142857142857) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) [2025-03-17 05:54:18,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:54:18,441 INFO L93 Difference]: Finished difference Result 1299 states and 1572 transitions. [2025-03-17 05:54:18,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 05:54:18,443 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 6.857142857142857) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) Word has length 125 [2025-03-17 05:54:18,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:54:18,446 INFO L225 Difference]: With dead ends: 1299 [2025-03-17 05:54:18,446 INFO L226 Difference]: Without dead ends: 780 [2025-03-17 05:54:18,447 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-17 05:54:18,447 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 58 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-17 05:54:18,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 612 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-17 05:54:18,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2025-03-17 05:54:18,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 659. [2025-03-17 05:54:18,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 538 states have (on average 1.1654275092936803) internal successors, (627), 542 states have internal predecessors, (627), 84 states have call successors, (84), 36 states have call predecessors, (84), 36 states have return successors, (84), 80 states have call predecessors, (84), 84 states have call successors, (84) [2025-03-17 05:54:18,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 795 transitions. [2025-03-17 05:54:18,508 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 795 transitions. Word has length 125 [2025-03-17 05:54:18,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:54:18,508 INFO L471 AbstractCegarLoop]: Abstraction has 659 states and 795 transitions. [2025-03-17 05:54:18,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 6.857142857142857) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) [2025-03-17 05:54:18,508 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 795 transitions. [2025-03-17 05:54:18,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-17 05:54:18,509 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:54:18,509 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:54:18,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-17 05:54:18,510 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:54:18,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:54:18,510 INFO L85 PathProgramCache]: Analyzing trace with hash -846640454, now seen corresponding path program 1 times [2025-03-17 05:54:18,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:54:18,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081256225] [2025-03-17 05:54:18,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:18,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:54:18,521 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-17 05:54:18,535 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-17 05:54:18,535 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:18,535 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:54:18,720 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 05:54:18,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:54:18,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081256225] [2025-03-17 05:54:18,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081256225] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:54:18,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:54:18,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 05:54:18,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177787724] [2025-03-17 05:54:18,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:54:18,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 05:54:18,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:54:18,721 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 05:54:18,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 05:54:18,721 INFO L87 Difference]: Start difference. First operand 659 states and 795 transitions. Second operand has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-17 05:54:19,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:54:19,048 INFO L93 Difference]: Finished difference Result 1284 states and 1548 transitions. [2025-03-17 05:54:19,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 05:54:19,048 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 125 [2025-03-17 05:54:19,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:54:19,051 INFO L225 Difference]: With dead ends: 1284 [2025-03-17 05:54:19,052 INFO L226 Difference]: Without dead ends: 761 [2025-03-17 05:54:19,053 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-17 05:54:19,053 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 77 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 05:54:19,053 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 472 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 05:54:19,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2025-03-17 05:54:19,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 632. [2025-03-17 05:54:19,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 511 states have (on average 1.162426614481409) internal successors, (594), 515 states have internal predecessors, (594), 84 states have call successors, (84), 36 states have call predecessors, (84), 36 states have return successors, (84), 80 states have call predecessors, (84), 84 states have call successors, (84) [2025-03-17 05:54:19,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 762 transitions. [2025-03-17 05:54:19,136 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 762 transitions. Word has length 125 [2025-03-17 05:54:19,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:54:19,137 INFO L471 AbstractCegarLoop]: Abstraction has 632 states and 762 transitions. [2025-03-17 05:54:19,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-17 05:54:19,137 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 762 transitions. [2025-03-17 05:54:19,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-17 05:54:19,138 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:54:19,138 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:54:19,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-17 05:54:19,138 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:54:19,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:54:19,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1445774730, now seen corresponding path program 1 times [2025-03-17 05:54:19,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:54:19,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118082449] [2025-03-17 05:54:19,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:19,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:54:19,150 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-17 05:54:19,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-17 05:54:19,172 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:19,172 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:54:19,552 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 05:54:19,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:54:19,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118082449] [2025-03-17 05:54:19,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118082449] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:54:19,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:54:19,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 05:54:19,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866256549] [2025-03-17 05:54:19,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:54:19,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 05:54:19,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:54:19,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 05:54:19,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-17 05:54:19,554 INFO L87 Difference]: Start difference. First operand 632 states and 762 transitions. Second operand has 7 states, 5 states have (on average 9.6) internal successors, (48), 7 states have internal predecessors, (48), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-17 05:54:19,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:54:19,777 INFO L93 Difference]: Finished difference Result 1095 states and 1322 transitions. [2025-03-17 05:54:19,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 05:54:19,777 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 9.6) internal successors, (48), 7 states have internal predecessors, (48), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 125 [2025-03-17 05:54:19,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:54:19,779 INFO L225 Difference]: With dead ends: 1095 [2025-03-17 05:54:19,780 INFO L226 Difference]: Without dead ends: 599 [2025-03-17 05:54:19,780 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-17 05:54:19,782 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 0 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 05:54:19,784 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 445 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 05:54:19,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2025-03-17 05:54:19,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2025-03-17 05:54:19,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 478 states have (on average 1.1443514644351465) internal successors, (547), 482 states have internal predecessors, (547), 84 states have call successors, (84), 36 states have call predecessors, (84), 36 states have return successors, (84), 80 states have call predecessors, (84), 84 states have call successors, (84) [2025-03-17 05:54:19,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 715 transitions. [2025-03-17 05:54:19,842 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 715 transitions. Word has length 125 [2025-03-17 05:54:19,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:54:19,843 INFO L471 AbstractCegarLoop]: Abstraction has 599 states and 715 transitions. [2025-03-17 05:54:19,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 9.6) internal successors, (48), 7 states have internal predecessors, (48), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-17 05:54:19,843 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 715 transitions. [2025-03-17 05:54:19,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-17 05:54:19,844 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:54:19,844 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:54:19,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-17 05:54:19,844 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:54:19,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:54:19,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1512781483, now seen corresponding path program 1 times [2025-03-17 05:54:19,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:54:19,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977568824] [2025-03-17 05:54:19,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:19,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:54:19,854 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-17 05:54:19,870 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-17 05:54:19,870 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:19,870 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:54:20,202 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 05:54:20,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:54:20,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977568824] [2025-03-17 05:54:20,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977568824] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:54:20,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:54:20,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 05:54:20,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524955498] [2025-03-17 05:54:20,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:54:20,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 05:54:20,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:54:20,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 05:54:20,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-17 05:54:20,203 INFO L87 Difference]: Start difference. First operand 599 states and 715 transitions. Second operand has 7 states, 5 states have (on average 9.6) internal successors, (48), 7 states have internal predecessors, (48), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-17 05:54:20,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:54:20,571 INFO L93 Difference]: Finished difference Result 1161 states and 1384 transitions. [2025-03-17 05:54:20,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 05:54:20,571 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 9.6) internal successors, (48), 7 states have internal predecessors, (48), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 125 [2025-03-17 05:54:20,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:54:20,574 INFO L225 Difference]: With dead ends: 1161 [2025-03-17 05:54:20,574 INFO L226 Difference]: Without dead ends: 698 [2025-03-17 05:54:20,574 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-17 05:54:20,575 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 71 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 05:54:20,575 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 462 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 05:54:20,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2025-03-17 05:54:20,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 694. [2025-03-17 05:54:20,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 543 states have (on average 1.1233885819521179) internal successors, (610), 549 states have internal predecessors, (610), 104 states have call successors, (104), 46 states have call predecessors, (104), 46 states have return successors, (104), 98 states have call predecessors, (104), 104 states have call successors, (104) [2025-03-17 05:54:20,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 818 transitions. [2025-03-17 05:54:20,647 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 818 transitions. Word has length 125 [2025-03-17 05:54:20,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:54:20,647 INFO L471 AbstractCegarLoop]: Abstraction has 694 states and 818 transitions. [2025-03-17 05:54:20,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 9.6) internal successors, (48), 7 states have internal predecessors, (48), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-17 05:54:20,647 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 818 transitions. [2025-03-17 05:54:20,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-17 05:54:20,648 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:54:20,648 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:54:20,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-17 05:54:20,648 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:54:20,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:54:20,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1383698764, now seen corresponding path program 1 times [2025-03-17 05:54:20,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:54:20,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772701274] [2025-03-17 05:54:20,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:20,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:54:20,658 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-17 05:54:20,672 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-17 05:54:20,672 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:20,672 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:54:20,764 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 05:54:20,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:54:20,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772701274] [2025-03-17 05:54:20,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772701274] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:54:20,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:54:20,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 05:54:20,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031459907] [2025-03-17 05:54:20,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:54:20,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 05:54:20,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:54:20,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 05:54:20,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 05:54:20,765 INFO L87 Difference]: Start difference. First operand 694 states and 818 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-17 05:54:21,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:54:21,016 INFO L93 Difference]: Finished difference Result 1361 states and 1606 transitions. [2025-03-17 05:54:21,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 05:54:21,016 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 125 [2025-03-17 05:54:21,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:54:21,019 INFO L225 Difference]: With dead ends: 1361 [2025-03-17 05:54:21,019 INFO L226 Difference]: Without dead ends: 803 [2025-03-17 05:54:21,020 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 05:54:21,021 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 57 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 05:54:21,021 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 334 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 05:54:21,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2025-03-17 05:54:21,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 661. [2025-03-17 05:54:21,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 510 states have (on average 1.1098039215686275) internal successors, (566), 516 states have internal predecessors, (566), 104 states have call successors, (104), 46 states have call predecessors, (104), 46 states have return successors, (104), 98 states have call predecessors, (104), 104 states have call successors, (104) [2025-03-17 05:54:21,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 774 transitions. [2025-03-17 05:54:21,104 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 774 transitions. Word has length 125 [2025-03-17 05:54:21,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:54:21,104 INFO L471 AbstractCegarLoop]: Abstraction has 661 states and 774 transitions. [2025-03-17 05:54:21,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-17 05:54:21,105 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 774 transitions. [2025-03-17 05:54:21,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-17 05:54:21,105 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:54:21,105 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:54:21,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-03-17 05:54:21,106 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:54:21,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:54:21,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1580212269, now seen corresponding path program 1 times [2025-03-17 05:54:21,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:54:21,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46369032] [2025-03-17 05:54:21,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:21,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:54:21,118 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-17 05:54:21,135 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-17 05:54:21,135 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:21,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:54:21,837 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 05:54:21,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:54:21,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46369032] [2025-03-17 05:54:21,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46369032] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:54:21,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:54:21,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-17 05:54:21,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24443129] [2025-03-17 05:54:21,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:54:21,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 05:54:21,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:54:21,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 05:54:21,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-17 05:54:21,839 INFO L87 Difference]: Start difference. First operand 661 states and 774 transitions. Second operand has 11 states, 7 states have (on average 6.857142857142857) internal successors, (48), 11 states have internal predecessors, (48), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 5 states have call successors, (16) [2025-03-17 05:54:22,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:54:22,568 INFO L93 Difference]: Finished difference Result 1327 states and 1559 transitions. [2025-03-17 05:54:22,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 05:54:22,569 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 6.857142857142857) internal successors, (48), 11 states have internal predecessors, (48), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 5 states have call successors, (16) Word has length 125 [2025-03-17 05:54:22,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:54:22,572 INFO L225 Difference]: With dead ends: 1327 [2025-03-17 05:54:22,572 INFO L226 Difference]: Without dead ends: 802 [2025-03-17 05:54:22,573 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2025-03-17 05:54:22,573 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 58 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-17 05:54:22,573 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 864 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-17 05:54:22,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2025-03-17 05:54:22,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 687. [2025-03-17 05:54:22,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 536 states have (on average 1.1138059701492538) internal successors, (597), 542 states have internal predecessors, (597), 104 states have call successors, (104), 46 states have call predecessors, (104), 46 states have return successors, (104), 98 states have call predecessors, (104), 104 states have call successors, (104) [2025-03-17 05:54:22,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 805 transitions. [2025-03-17 05:54:22,655 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 805 transitions. Word has length 125 [2025-03-17 05:54:22,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:54:22,655 INFO L471 AbstractCegarLoop]: Abstraction has 687 states and 805 transitions. [2025-03-17 05:54:22,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 6.857142857142857) internal successors, (48), 11 states have internal predecessors, (48), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 5 states have call successors, (16) [2025-03-17 05:54:22,655 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 805 transitions. [2025-03-17 05:54:22,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-17 05:54:22,657 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:54:22,658 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:54:22,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-03-17 05:54:22,659 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:54:22,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:54:22,659 INFO L85 PathProgramCache]: Analyzing trace with hash 935076656, now seen corresponding path program 1 times [2025-03-17 05:54:22,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:54:22,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266582123] [2025-03-17 05:54:22,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:22,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:54:22,669 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-17 05:54:22,681 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-17 05:54:22,681 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:22,681 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:54:22,767 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 05:54:22,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:54:22,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266582123] [2025-03-17 05:54:22,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266582123] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:54:22,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:54:22,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 05:54:22,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194739190] [2025-03-17 05:54:22,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:54:22,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 05:54:22,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:54:22,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 05:54:22,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 05:54:22,769 INFO L87 Difference]: Start difference. First operand 687 states and 805 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-17 05:54:23,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:54:23,056 INFO L93 Difference]: Finished difference Result 1351 states and 1584 transitions. [2025-03-17 05:54:23,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 05:54:23,056 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 125 [2025-03-17 05:54:23,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:54:23,059 INFO L225 Difference]: With dead ends: 1351 [2025-03-17 05:54:23,060 INFO L226 Difference]: Without dead ends: 800 [2025-03-17 05:54:23,060 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 05:54:23,061 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 56 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 05:54:23,062 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 334 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 05:54:23,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2025-03-17 05:54:23,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 687. [2025-03-17 05:54:23,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 536 states have (on average 1.1100746268656716) internal successors, (595), 542 states have internal predecessors, (595), 104 states have call successors, (104), 46 states have call predecessors, (104), 46 states have return successors, (104), 98 states have call predecessors, (104), 104 states have call successors, (104) [2025-03-17 05:54:23,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 803 transitions. [2025-03-17 05:54:23,137 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 803 transitions. Word has length 125 [2025-03-17 05:54:23,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:54:23,137 INFO L471 AbstractCegarLoop]: Abstraction has 687 states and 803 transitions. [2025-03-17 05:54:23,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-17 05:54:23,138 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 803 transitions. [2025-03-17 05:54:23,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-17 05:54:23,138 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:54:23,139 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:54:23,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-03-17 05:54:23,141 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:54:23,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:54:23,141 INFO L85 PathProgramCache]: Analyzing trace with hash 738563151, now seen corresponding path program 1 times [2025-03-17 05:54:23,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:54:23,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469605661] [2025-03-17 05:54:23,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:23,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:54:23,153 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-17 05:54:23,178 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-17 05:54:23,178 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:23,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:54:23,782 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 05:54:23,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:54:23,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469605661] [2025-03-17 05:54:23,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469605661] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:54:23,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:54:23,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2025-03-17 05:54:23,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173461708] [2025-03-17 05:54:23,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:54:23,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-17 05:54:23,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:54:23,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-17 05:54:23,784 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2025-03-17 05:54:23,784 INFO L87 Difference]: Start difference. First operand 687 states and 803 transitions. Second operand has 18 states, 16 states have (on average 3.0) internal successors, (48), 18 states have internal predecessors, (48), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-17 05:54:24,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:54:24,657 INFO L93 Difference]: Finished difference Result 1359 states and 1588 transitions. [2025-03-17 05:54:24,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-17 05:54:24,658 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.0) internal successors, (48), 18 states have internal predecessors, (48), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 125 [2025-03-17 05:54:24,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:54:24,661 INFO L225 Difference]: With dead ends: 1359 [2025-03-17 05:54:24,661 INFO L226 Difference]: Without dead ends: 808 [2025-03-17 05:54:24,662 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2025-03-17 05:54:24,662 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 60 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 1415 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 1422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-17 05:54:24,662 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1488 Invalid, 1422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1415 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-17 05:54:24,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2025-03-17 05:54:24,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 693. [2025-03-17 05:54:24,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 542 states have (on average 1.1088560885608856) internal successors, (601), 548 states have internal predecessors, (601), 104 states have call successors, (104), 46 states have call predecessors, (104), 46 states have return successors, (104), 98 states have call predecessors, (104), 104 states have call successors, (104) [2025-03-17 05:54:24,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 809 transitions. [2025-03-17 05:54:24,737 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 809 transitions. Word has length 125 [2025-03-17 05:54:24,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:54:24,737 INFO L471 AbstractCegarLoop]: Abstraction has 693 states and 809 transitions. [2025-03-17 05:54:24,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.0) internal successors, (48), 18 states have internal predecessors, (48), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-17 05:54:24,738 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 809 transitions. [2025-03-17 05:54:24,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-17 05:54:24,738 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:54:24,738 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:54:24,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-03-17 05:54:24,739 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:54:24,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:54:24,739 INFO L85 PathProgramCache]: Analyzing trace with hash -816044680, now seen corresponding path program 1 times [2025-03-17 05:54:24,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:54:24,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394515734] [2025-03-17 05:54:24,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:24,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:54:24,749 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-17 05:54:24,761 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-17 05:54:24,762 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:24,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:54:24,946 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 05:54:24,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:54:24,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394515734] [2025-03-17 05:54:24,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394515734] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:54:24,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:54:24,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 05:54:24,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008853020] [2025-03-17 05:54:24,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:54:24,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 05:54:24,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:54:24,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 05:54:24,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 05:54:24,947 INFO L87 Difference]: Start difference. First operand 693 states and 809 transitions. Second operand has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-17 05:54:25,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:54:25,226 INFO L93 Difference]: Finished difference Result 1254 states and 1465 transitions. [2025-03-17 05:54:25,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 05:54:25,226 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 125 [2025-03-17 05:54:25,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:54:25,229 INFO L225 Difference]: With dead ends: 1254 [2025-03-17 05:54:25,229 INFO L226 Difference]: Without dead ends: 697 [2025-03-17 05:54:25,230 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-17 05:54:25,230 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 78 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 05:54:25,231 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 413 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 05:54:25,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2025-03-17 05:54:25,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 693. [2025-03-17 05:54:25,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 542 states have (on average 1.1070110701107012) internal successors, (600), 548 states have internal predecessors, (600), 104 states have call successors, (104), 46 states have call predecessors, (104), 46 states have return successors, (104), 98 states have call predecessors, (104), 104 states have call successors, (104) [2025-03-17 05:54:25,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 808 transitions. [2025-03-17 05:54:25,309 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 808 transitions. Word has length 125 [2025-03-17 05:54:25,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:54:25,310 INFO L471 AbstractCegarLoop]: Abstraction has 693 states and 808 transitions. [2025-03-17 05:54:25,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-17 05:54:25,310 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 808 transitions. [2025-03-17 05:54:25,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-17 05:54:25,311 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:54:25,311 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:54:25,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-03-17 05:54:25,311 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:54:25,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:54:25,311 INFO L85 PathProgramCache]: Analyzing trace with hash -883051433, now seen corresponding path program 1 times [2025-03-17 05:54:25,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:54:25,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691766775] [2025-03-17 05:54:25,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:25,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:54:25,321 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-17 05:54:25,339 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-17 05:54:25,340 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:25,340 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:54:26,007 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 05:54:26,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:54:26,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691766775] [2025-03-17 05:54:26,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691766775] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:54:26,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:54:26,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2025-03-17 05:54:26,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700109802] [2025-03-17 05:54:26,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:54:26,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-17 05:54:26,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:54:26,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-17 05:54:26,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2025-03-17 05:54:26,008 INFO L87 Difference]: Start difference. First operand 693 states and 808 transitions. Second operand has 18 states, 16 states have (on average 3.0) internal successors, (48), 18 states have internal predecessors, (48), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-17 05:54:26,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:54:26,903 INFO L93 Difference]: Finished difference Result 1373 states and 1600 transitions. [2025-03-17 05:54:26,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-17 05:54:26,904 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.0) internal successors, (48), 18 states have internal predecessors, (48), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 125 [2025-03-17 05:54:26,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:54:26,907 INFO L225 Difference]: With dead ends: 1373 [2025-03-17 05:54:26,907 INFO L226 Difference]: Without dead ends: 816 [2025-03-17 05:54:26,908 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2025-03-17 05:54:26,908 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 68 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 1455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-17 05:54:26,908 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1482 Invalid, 1455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-17 05:54:26,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2025-03-17 05:54:26,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 693. [2025-03-17 05:54:26,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 542 states have (on average 1.1070110701107012) internal successors, (600), 548 states have internal predecessors, (600), 104 states have call successors, (104), 46 states have call predecessors, (104), 46 states have return successors, (104), 98 states have call predecessors, (104), 104 states have call successors, (104) [2025-03-17 05:54:26,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 808 transitions. [2025-03-17 05:54:27,000 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 808 transitions. Word has length 125 [2025-03-17 05:54:27,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:54:27,001 INFO L471 AbstractCegarLoop]: Abstraction has 693 states and 808 transitions. [2025-03-17 05:54:27,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.0) internal successors, (48), 18 states have internal predecessors, (48), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-17 05:54:27,001 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 808 transitions. [2025-03-17 05:54:27,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-17 05:54:27,002 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:54:27,002 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:54:27,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-03-17 05:54:27,003 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:54:27,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:54:27,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1435723987, now seen corresponding path program 1 times [2025-03-17 05:54:27,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:54:27,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876669142] [2025-03-17 05:54:27,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:27,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:54:27,017 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-17 05:54:27,049 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-17 05:54:27,050 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:27,050 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:54:27,633 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 05:54:27,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:54:27,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876669142] [2025-03-17 05:54:27,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876669142] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:54:27,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:54:27,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 05:54:27,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884053189] [2025-03-17 05:54:27,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:54:27,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-17 05:54:27,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:54:27,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-17 05:54:27,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-17 05:54:27,634 INFO L87 Difference]: Start difference. First operand 693 states and 808 transitions. Second operand has 10 states, 7 states have (on average 6.857142857142857) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) [2025-03-17 05:54:28,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:54:28,212 INFO L93 Difference]: Finished difference Result 1343 states and 1566 transitions. [2025-03-17 05:54:28,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 05:54:28,212 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 6.857142857142857) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) Word has length 125 [2025-03-17 05:54:28,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:54:28,216 INFO L225 Difference]: With dead ends: 1343 [2025-03-17 05:54:28,216 INFO L226 Difference]: Without dead ends: 786 [2025-03-17 05:54:28,217 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-17 05:54:28,217 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 56 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 05:54:28,217 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 642 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 05:54:28,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2025-03-17 05:54:28,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 681. [2025-03-17 05:54:28,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 530 states have (on average 1.1018867924528302) internal successors, (584), 536 states have internal predecessors, (584), 104 states have call successors, (104), 46 states have call predecessors, (104), 46 states have return successors, (104), 98 states have call predecessors, (104), 104 states have call successors, (104) [2025-03-17 05:54:28,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 792 transitions. [2025-03-17 05:54:28,301 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 792 transitions. Word has length 125 [2025-03-17 05:54:28,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:54:28,301 INFO L471 AbstractCegarLoop]: Abstraction has 681 states and 792 transitions. [2025-03-17 05:54:28,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 6.857142857142857) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) [2025-03-17 05:54:28,301 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 792 transitions. [2025-03-17 05:54:28,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-03-17 05:54:28,302 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:54:28,302 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:54:28,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-03-17 05:54:28,302 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:54:28,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:54:28,303 INFO L85 PathProgramCache]: Analyzing trace with hash -552676718, now seen corresponding path program 1 times [2025-03-17 05:54:28,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:54:28,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90089969] [2025-03-17 05:54:28,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:28,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:54:28,314 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-03-17 05:54:28,321 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-03-17 05:54:28,321 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:28,321 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:54:28,432 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 05:54:28,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:54:28,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90089969] [2025-03-17 05:54:28,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90089969] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:54:28,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:54:28,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 05:54:28,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317499591] [2025-03-17 05:54:28,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:54:28,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 05:54:28,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:54:28,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 05:54:28,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 05:54:28,433 INFO L87 Difference]: Start difference. First operand 681 states and 792 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-17 05:54:28,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:54:28,625 INFO L93 Difference]: Finished difference Result 1228 states and 1429 transitions. [2025-03-17 05:54:28,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 05:54:28,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 127 [2025-03-17 05:54:28,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:54:28,628 INFO L225 Difference]: With dead ends: 1228 [2025-03-17 05:54:28,628 INFO L226 Difference]: Without dead ends: 683 [2025-03-17 05:54:28,629 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 05:54:28,629 INFO L435 NwaCegarLoop]: 98 mSDtfsCounter, 40 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 05:54:28,630 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 313 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 05:54:28,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2025-03-17 05:54:28,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 681. [2025-03-17 05:54:28,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 530 states have (on average 1.0867924528301887) internal successors, (576), 536 states have internal predecessors, (576), 104 states have call successors, (104), 46 states have call predecessors, (104), 46 states have return successors, (104), 98 states have call predecessors, (104), 104 states have call successors, (104) [2025-03-17 05:54:28,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 784 transitions. [2025-03-17 05:54:28,710 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 784 transitions. Word has length 127 [2025-03-17 05:54:28,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:54:28,711 INFO L471 AbstractCegarLoop]: Abstraction has 681 states and 784 transitions. [2025-03-17 05:54:28,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-17 05:54:28,711 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 784 transitions. [2025-03-17 05:54:28,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-03-17 05:54:28,712 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:54:28,712 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:54:28,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2025-03-17 05:54:28,712 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:54:28,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:54:28,712 INFO L85 PathProgramCache]: Analyzing trace with hash 370822973, now seen corresponding path program 1 times [2025-03-17 05:54:28,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:54:28,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179528036] [2025-03-17 05:54:28,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:28,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:54:28,724 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-17 05:54:28,764 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-17 05:54:28,764 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:28,764 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:54:29,164 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 54 proven. 30 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2025-03-17 05:54:29,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:54:29,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179528036] [2025-03-17 05:54:29,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179528036] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 05:54:29,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692402290] [2025-03-17 05:54:29,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:29,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:54:29,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:54:29,167 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 05:54:29,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-17 05:54:29,290 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-17 05:54:29,339 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-17 05:54:29,339 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:29,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:54:29,342 INFO L256 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-03-17 05:54:29,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:54:29,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2025-03-17 05:54:29,448 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 05:54:29,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 31 [2025-03-17 05:54:29,497 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 05:54:29,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 31 [2025-03-17 05:54:29,584 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 300 proven. 30 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2025-03-17 05:54:29,584 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 05:54:29,829 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 54 proven. 33 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2025-03-17 05:54:29,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692402290] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 05:54:29,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 05:54:29,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 13] total 23 [2025-03-17 05:54:29,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125791931] [2025-03-17 05:54:29,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 05:54:29,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-17 05:54:29,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:54:29,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-17 05:54:29,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2025-03-17 05:54:29,831 INFO L87 Difference]: Start difference. First operand 681 states and 784 transitions. Second operand has 23 states, 19 states have (on average 4.526315789473684) internal successors, (86), 23 states have internal predecessors, (86), 9 states have call successors, (26), 3 states have call predecessors, (26), 7 states have return successors, (26), 5 states have call predecessors, (26), 9 states have call successors, (26) [2025-03-17 05:54:30,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:54:30,472 INFO L93 Difference]: Finished difference Result 1274 states and 1446 transitions. [2025-03-17 05:54:30,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-17 05:54:30,473 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 4.526315789473684) internal successors, (86), 23 states have internal predecessors, (86), 9 states have call successors, (26), 3 states have call predecessors, (26), 7 states have return successors, (26), 5 states have call predecessors, (26), 9 states have call successors, (26) Word has length 132 [2025-03-17 05:54:30,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:54:30,476 INFO L225 Difference]: With dead ends: 1274 [2025-03-17 05:54:30,476 INFO L226 Difference]: Without dead ends: 729 [2025-03-17 05:54:30,477 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 252 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=211, Invalid=659, Unknown=0, NotChecked=0, Total=870 [2025-03-17 05:54:30,478 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 188 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 05:54:30,478 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 367 Invalid, 1069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 05:54:30,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2025-03-17 05:54:30,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 693. [2025-03-17 05:54:30,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 531 states have (on average 1.07909604519774) internal successors, (573), 537 states have internal predecessors, (573), 104 states have call successors, (104), 57 states have call predecessors, (104), 57 states have return successors, (104), 98 states have call predecessors, (104), 104 states have call successors, (104) [2025-03-17 05:54:30,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 781 transitions. [2025-03-17 05:54:30,574 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 781 transitions. Word has length 132 [2025-03-17 05:54:30,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:54:30,575 INFO L471 AbstractCegarLoop]: Abstraction has 693 states and 781 transitions. [2025-03-17 05:54:30,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 4.526315789473684) internal successors, (86), 23 states have internal predecessors, (86), 9 states have call successors, (26), 3 states have call predecessors, (26), 7 states have return successors, (26), 5 states have call predecessors, (26), 9 states have call successors, (26) [2025-03-17 05:54:30,575 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 781 transitions. [2025-03-17 05:54:30,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-03-17 05:54:30,576 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:54:30,576 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:54:30,584 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-17 05:54:30,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2025-03-17 05:54:30,777 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:54:30,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:54:30,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1181312835, now seen corresponding path program 1 times [2025-03-17 05:54:30,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:54:30,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254930820] [2025-03-17 05:54:30,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:30,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:54:30,793 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-17 05:54:30,861 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-17 05:54:30,861 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:30,861 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 05:54:30,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1765917201] [2025-03-17 05:54:30,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:30,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:54:30,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:54:30,865 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 05:54:30,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-17 05:54:30,991 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-17 05:54:31,048 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-17 05:54:31,048 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:31,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:54:31,055 INFO L256 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-03-17 05:54:31,058 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:54:31,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 05:54:31,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 05:54:31,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 05:54:31,117 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 05:54:31,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 41 [2025-03-17 05:54:31,246 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 05:54:31,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 26 [2025-03-17 05:54:31,266 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 05:54:31,266 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 05:54:31,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:54:31,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254930820] [2025-03-17 05:54:31,267 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-17 05:54:31,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765917201] [2025-03-17 05:54:31,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765917201] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:54:31,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:54:31,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 05:54:31,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691344523] [2025-03-17 05:54:31,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:54:31,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 05:54:31,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:54:31,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 05:54:31,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-17 05:54:31,269 INFO L87 Difference]: Start difference. First operand 693 states and 781 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-17 05:54:31,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:54:31,797 INFO L93 Difference]: Finished difference Result 1634 states and 1830 transitions. [2025-03-17 05:54:31,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 05:54:31,797 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 132 [2025-03-17 05:54:31,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:54:31,802 INFO L225 Difference]: With dead ends: 1634 [2025-03-17 05:54:31,802 INFO L226 Difference]: Without dead ends: 998 [2025-03-17 05:54:31,803 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 05:54:31,803 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 57 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 05:54:31,804 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 464 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 05:54:31,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2025-03-17 05:54:31,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 681. [2025-03-17 05:54:31,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 537 states have (on average 1.0614525139664805) internal successors, (570), 542 states have internal predecessors, (570), 92 states have call successors, (92), 51 states have call predecessors, (92), 51 states have return successors, (92), 87 states have call predecessors, (92), 92 states have call successors, (92) [2025-03-17 05:54:31,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 754 transitions. [2025-03-17 05:54:31,898 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 754 transitions. Word has length 132 [2025-03-17 05:54:31,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:54:31,899 INFO L471 AbstractCegarLoop]: Abstraction has 681 states and 754 transitions. [2025-03-17 05:54:31,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-17 05:54:31,899 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 754 transitions. [2025-03-17 05:54:31,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2025-03-17 05:54:31,900 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:54:31,900 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:54:31,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-17 05:54:32,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2025-03-17 05:54:32,104 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:54:32,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:54:32,105 INFO L85 PathProgramCache]: Analyzing trace with hash 905031572, now seen corresponding path program 1 times [2025-03-17 05:54:32,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:54:32,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205120131] [2025-03-17 05:54:32,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:32,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:54:32,117 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-03-17 05:54:32,160 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-03-17 05:54:32,160 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:32,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 05:54:32,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1262362357] [2025-03-17 05:54:32,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:32,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:54:32,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:54:32,169 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 05:54:32,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-17 05:54:32,304 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-03-17 05:54:32,388 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-03-17 05:54:32,388 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:32,388 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:54:32,396 INFO L256 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-03-17 05:54:32,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:54:32,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 05:54:32,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 05:54:32,434 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 05:54:32,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 28 [2025-03-17 05:54:32,444 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 05:54:32,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 46 [2025-03-17 05:54:32,549 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 05:54:32,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 104 treesize of output 38 [2025-03-17 05:54:32,585 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 05:54:32,585 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 05:54:32,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:54:32,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205120131] [2025-03-17 05:54:32,585 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-17 05:54:32,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262362357] [2025-03-17 05:54:32,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262362357] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:54:32,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:54:32,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 05:54:32,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981209504] [2025-03-17 05:54:32,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:54:32,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 05:54:32,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:54:32,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 05:54:32,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-17 05:54:32,587 INFO L87 Difference]: Start difference. First operand 681 states and 754 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-17 05:54:33,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:54:33,030 INFO L93 Difference]: Finished difference Result 1268 states and 1404 transitions. [2025-03-17 05:54:33,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 05:54:33,030 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 133 [2025-03-17 05:54:33,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:54:33,034 INFO L225 Difference]: With dead ends: 1268 [2025-03-17 05:54:33,034 INFO L226 Difference]: Without dead ends: 797 [2025-03-17 05:54:33,034 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-03-17 05:54:33,035 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 102 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 05:54:33,035 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 504 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 05:54:33,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2025-03-17 05:54:33,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 682. [2025-03-17 05:54:33,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 538 states have (on average 1.0613382899628252) internal successors, (571), 543 states have internal predecessors, (571), 92 states have call successors, (92), 51 states have call predecessors, (92), 51 states have return successors, (92), 87 states have call predecessors, (92), 92 states have call successors, (92) [2025-03-17 05:54:33,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 755 transitions. [2025-03-17 05:54:33,127 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 755 transitions. Word has length 133 [2025-03-17 05:54:33,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:54:33,128 INFO L471 AbstractCegarLoop]: Abstraction has 682 states and 755 transitions. [2025-03-17 05:54:33,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-17 05:54:33,128 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 755 transitions. [2025-03-17 05:54:33,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2025-03-17 05:54:33,128 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:54:33,128 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:54:33,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-17 05:54:33,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2025-03-17 05:54:33,329 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:54:33,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:54:33,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1340484600, now seen corresponding path program 1 times [2025-03-17 05:54:33,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:54:33,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112026196] [2025-03-17 05:54:33,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:33,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:54:33,347 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-03-17 05:54:33,396 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-03-17 05:54:33,396 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:33,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:54:33,774 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 60 proven. 24 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2025-03-17 05:54:33,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:54:33,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112026196] [2025-03-17 05:54:33,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112026196] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 05:54:33,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277763940] [2025-03-17 05:54:33,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:33,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:54:33,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:54:33,776 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 05:54:33,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-17 05:54:33,906 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-03-17 05:54:33,949 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-03-17 05:54:33,949 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:33,949 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:54:33,951 INFO L256 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-03-17 05:54:33,958 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:54:33,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2025-03-17 05:54:34,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2025-03-17 05:54:34,065 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 05:54:34,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 31 [2025-03-17 05:54:34,153 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 304 proven. 24 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2025-03-17 05:54:34,153 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 05:54:34,474 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 60 proven. 27 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2025-03-17 05:54:34,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277763940] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 05:54:34,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 05:54:34,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 13] total 23 [2025-03-17 05:54:34,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187801775] [2025-03-17 05:54:34,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 05:54:34,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-17 05:54:34,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:54:34,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-17 05:54:34,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2025-03-17 05:54:34,476 INFO L87 Difference]: Start difference. First operand 682 states and 755 transitions. Second operand has 23 states, 19 states have (on average 4.473684210526316) internal successors, (85), 23 states have internal predecessors, (85), 9 states have call successors, (26), 3 states have call predecessors, (26), 7 states have return successors, (26), 5 states have call predecessors, (26), 9 states have call successors, (26) [2025-03-17 05:54:35,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:54:35,036 INFO L93 Difference]: Finished difference Result 1151 states and 1271 transitions. [2025-03-17 05:54:35,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-17 05:54:35,036 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 4.473684210526316) internal successors, (85), 23 states have internal predecessors, (85), 9 states have call successors, (26), 3 states have call predecessors, (26), 7 states have return successors, (26), 5 states have call predecessors, (26), 9 states have call successors, (26) Word has length 133 [2025-03-17 05:54:35,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:54:35,039 INFO L225 Difference]: With dead ends: 1151 [2025-03-17 05:54:35,040 INFO L226 Difference]: Without dead ends: 679 [2025-03-17 05:54:35,040 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 253 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=211, Invalid=659, Unknown=0, NotChecked=0, Total=870 [2025-03-17 05:54:35,041 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 272 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 05:54:35,041 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 264 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 05:54:35,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2025-03-17 05:54:35,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 569. [2025-03-17 05:54:35,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 448 states have (on average 1.0602678571428572) internal successors, (475), 452 states have internal predecessors, (475), 76 states have call successors, (76), 44 states have call predecessors, (76), 44 states have return successors, (76), 72 states have call predecessors, (76), 76 states have call successors, (76) [2025-03-17 05:54:35,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 627 transitions. [2025-03-17 05:54:35,125 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 627 transitions. Word has length 133 [2025-03-17 05:54:35,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:54:35,125 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 627 transitions. [2025-03-17 05:54:35,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 4.473684210526316) internal successors, (85), 23 states have internal predecessors, (85), 9 states have call successors, (26), 3 states have call predecessors, (26), 7 states have return successors, (26), 5 states have call predecessors, (26), 9 states have call successors, (26) [2025-03-17 05:54:35,125 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 627 transitions. [2025-03-17 05:54:35,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2025-03-17 05:54:35,126 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:54:35,126 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:54:35,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-17 05:54:35,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2025-03-17 05:54:35,326 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:54:35,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:54:35,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1485476848, now seen corresponding path program 1 times [2025-03-17 05:54:35,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:54:35,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856319349] [2025-03-17 05:54:35,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:35,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:54:35,338 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-03-17 05:54:35,365 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-03-17 05:54:35,366 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:35,366 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 05:54:35,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [415919624] [2025-03-17 05:54:35,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:35,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:54:35,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:54:35,369 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 05:54:35,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-17 05:54:35,495 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-03-17 05:54:35,627 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-03-17 05:54:35,627 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:35,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:54:35,630 INFO L256 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-03-17 05:54:35,635 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:54:35,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 05:54:35,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 05:54:35,672 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 05:54:35,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2025-03-17 05:54:35,702 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 05:54:35,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 68 [2025-03-17 05:54:35,914 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 05:54:35,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 104 treesize of output 38 [2025-03-17 05:54:35,940 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 05:54:35,940 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 05:54:35,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:54:35,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856319349] [2025-03-17 05:54:35,940 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-17 05:54:35,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415919624] [2025-03-17 05:54:35,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415919624] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:54:35,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:54:35,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 05:54:35,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145384992] [2025-03-17 05:54:35,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:54:35,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 05:54:35,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:54:35,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 05:54:35,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-17 05:54:35,941 INFO L87 Difference]: Start difference. First operand 569 states and 627 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-17 05:54:36,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:54:36,549 INFO L93 Difference]: Finished difference Result 1111 states and 1225 transitions. [2025-03-17 05:54:36,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 05:54:36,550 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 133 [2025-03-17 05:54:36,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:54:36,553 INFO L225 Difference]: With dead ends: 1111 [2025-03-17 05:54:36,553 INFO L226 Difference]: Without dead ends: 748 [2025-03-17 05:54:36,554 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-17 05:54:36,554 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 107 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 05:54:36,554 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 433 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 05:54:36,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2025-03-17 05:54:36,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 569. [2025-03-17 05:54:36,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 448 states have (on average 1.0580357142857142) internal successors, (474), 452 states have internal predecessors, (474), 76 states have call successors, (76), 44 states have call predecessors, (76), 44 states have return successors, (76), 72 states have call predecessors, (76), 76 states have call successors, (76) [2025-03-17 05:54:36,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 626 transitions. [2025-03-17 05:54:36,648 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 626 transitions. Word has length 133 [2025-03-17 05:54:36,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:54:36,648 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 626 transitions. [2025-03-17 05:54:36,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-17 05:54:36,648 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 626 transitions. [2025-03-17 05:54:36,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2025-03-17 05:54:36,649 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:54:36,649 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:54:36,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-17 05:54:36,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:54:36,850 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:54:36,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:54:36,850 INFO L85 PathProgramCache]: Analyzing trace with hash 640591558, now seen corresponding path program 1 times [2025-03-17 05:54:36,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:54:36,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315498840] [2025-03-17 05:54:36,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:36,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:54:36,862 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 134 statements into 1 equivalence classes. [2025-03-17 05:54:36,905 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 134 of 134 statements. [2025-03-17 05:54:36,905 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:36,905 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 05:54:36,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1835420063] [2025-03-17 05:54:36,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:36,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:54:36,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:54:36,909 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 05:54:36,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-17 05:54:37,035 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 134 statements into 1 equivalence classes. [2025-03-17 05:54:37,265 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 134 of 134 statements. [2025-03-17 05:54:37,265 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:37,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:54:37,268 INFO L256 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-03-17 05:54:37,276 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:54:37,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 05:54:37,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 05:54:37,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 05:54:37,331 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 05:54:37,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 34 [2025-03-17 05:54:37,415 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 05:54:37,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 28 [2025-03-17 05:54:37,437 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 05:54:37,437 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 05:54:37,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:54:37,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315498840] [2025-03-17 05:54:37,437 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-17 05:54:37,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835420063] [2025-03-17 05:54:37,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835420063] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:54:37,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:54:37,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 05:54:37,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088269446] [2025-03-17 05:54:37,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:54:37,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 05:54:37,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:54:37,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 05:54:37,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-17 05:54:37,438 INFO L87 Difference]: Start difference. First operand 569 states and 626 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-17 05:54:38,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:54:38,040 INFO L93 Difference]: Finished difference Result 997 states and 1098 transitions. [2025-03-17 05:54:38,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 05:54:38,040 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 134 [2025-03-17 05:54:38,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:54:38,043 INFO L225 Difference]: With dead ends: 997 [2025-03-17 05:54:38,043 INFO L226 Difference]: Without dead ends: 634 [2025-03-17 05:54:38,044 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-03-17 05:54:38,044 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 53 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 05:54:38,044 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 631 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 05:54:38,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2025-03-17 05:54:38,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 569. [2025-03-17 05:54:38,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 448 states have (on average 1.0558035714285714) internal successors, (473), 452 states have internal predecessors, (473), 76 states have call successors, (76), 44 states have call predecessors, (76), 44 states have return successors, (76), 72 states have call predecessors, (76), 76 states have call successors, (76) [2025-03-17 05:54:38,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 625 transitions. [2025-03-17 05:54:38,131 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 625 transitions. Word has length 134 [2025-03-17 05:54:38,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:54:38,131 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 625 transitions. [2025-03-17 05:54:38,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-17 05:54:38,131 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 625 transitions. [2025-03-17 05:54:38,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2025-03-17 05:54:38,132 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:54:38,132 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:54:38,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-03-17 05:54:38,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2025-03-17 05:54:38,333 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:54:38,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:54:38,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1415277694, now seen corresponding path program 1 times [2025-03-17 05:54:38,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:54:38,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974633414] [2025-03-17 05:54:38,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:38,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:54:38,344 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 134 statements into 1 equivalence classes. [2025-03-17 05:54:38,399 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 134 of 134 statements. [2025-03-17 05:54:38,399 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:38,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 05:54:38,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [101818430] [2025-03-17 05:54:38,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:38,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:54:38,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:54:38,404 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 05:54:38,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-17 05:54:38,547 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 134 statements into 1 equivalence classes. [2025-03-17 05:54:38,620 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 134 of 134 statements. [2025-03-17 05:54:38,620 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:38,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:54:38,624 INFO L256 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-03-17 05:54:38,627 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:54:38,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 05:54:38,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 05:54:38,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 05:54:38,666 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 05:54:38,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 52 [2025-03-17 05:54:38,770 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 05:54:38,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 85 treesize of output 31 [2025-03-17 05:54:38,788 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 05:54:38,788 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 05:54:38,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:54:38,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974633414] [2025-03-17 05:54:38,788 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-17 05:54:38,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101818430] [2025-03-17 05:54:38,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101818430] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:54:38,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:54:38,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 05:54:38,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317300511] [2025-03-17 05:54:38,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:54:38,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 05:54:38,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:54:38,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 05:54:38,791 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 05:54:38,791 INFO L87 Difference]: Start difference. First operand 569 states and 625 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-17 05:54:39,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:54:39,122 INFO L93 Difference]: Finished difference Result 976 states and 1075 transitions. [2025-03-17 05:54:39,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 05:54:39,123 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 134 [2025-03-17 05:54:39,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:54:39,126 INFO L225 Difference]: With dead ends: 976 [2025-03-17 05:54:39,126 INFO L226 Difference]: Without dead ends: 613 [2025-03-17 05:54:39,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-17 05:54:39,127 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 31 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 05:54:39,127 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 386 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 05:54:39,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2025-03-17 05:54:39,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 559. [2025-03-17 05:54:39,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 438 states have (on average 1.047945205479452) internal successors, (459), 442 states have internal predecessors, (459), 76 states have call successors, (76), 44 states have call predecessors, (76), 44 states have return successors, (76), 72 states have call predecessors, (76), 76 states have call successors, (76) [2025-03-17 05:54:39,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 611 transitions. [2025-03-17 05:54:39,224 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 611 transitions. Word has length 134 [2025-03-17 05:54:39,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:54:39,224 INFO L471 AbstractCegarLoop]: Abstraction has 559 states and 611 transitions. [2025-03-17 05:54:39,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-17 05:54:39,225 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 611 transitions. [2025-03-17 05:54:39,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-03-17 05:54:39,225 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:54:39,225 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:54:39,243 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-17 05:54:39,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-03-17 05:54:39,426 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:54:39,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:54:39,426 INFO L85 PathProgramCache]: Analyzing trace with hash -131012382, now seen corresponding path program 1 times [2025-03-17 05:54:39,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:54:39,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066061599] [2025-03-17 05:54:39,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:39,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:54:39,438 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-03-17 05:54:39,466 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-03-17 05:54:39,466 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:39,466 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:54:40,211 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 05:54:40,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:54:40,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066061599] [2025-03-17 05:54:40,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066061599] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:54:40,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:54:40,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2025-03-17 05:54:40,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297795974] [2025-03-17 05:54:40,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:54:40,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-17 05:54:40,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:54:40,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-17 05:54:40,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2025-03-17 05:54:40,212 INFO L87 Difference]: Start difference. First operand 559 states and 611 transitions. Second operand has 15 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 15 states have internal predecessors, (61), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-17 05:54:40,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:54:40,954 INFO L93 Difference]: Finished difference Result 690 states and 750 transitions. [2025-03-17 05:54:40,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 05:54:40,955 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 15 states have internal predecessors, (61), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 138 [2025-03-17 05:54:40,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:54:40,957 INFO L225 Difference]: With dead ends: 690 [2025-03-17 05:54:40,957 INFO L226 Difference]: Without dead ends: 688 [2025-03-17 05:54:40,958 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2025-03-17 05:54:40,958 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 66 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 903 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 05:54:40,958 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 914 Invalid, 911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 903 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 05:54:40,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2025-03-17 05:54:41,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 603. [2025-03-17 05:54:41,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 482 states have (on average 1.045643153526971) internal successors, (504), 486 states have internal predecessors, (504), 76 states have call successors, (76), 44 states have call predecessors, (76), 44 states have return successors, (76), 72 states have call predecessors, (76), 76 states have call successors, (76) [2025-03-17 05:54:41,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 656 transitions. [2025-03-17 05:54:41,070 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 656 transitions. Word has length 138 [2025-03-17 05:54:41,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:54:41,070 INFO L471 AbstractCegarLoop]: Abstraction has 603 states and 656 transitions. [2025-03-17 05:54:41,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 15 states have internal predecessors, (61), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-17 05:54:41,070 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 656 transitions. [2025-03-17 05:54:41,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-03-17 05:54:41,071 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:54:41,071 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:54:41,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2025-03-17 05:54:41,072 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:54:41,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:54:41,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1938466845, now seen corresponding path program 1 times [2025-03-17 05:54:41,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:54:41,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346819625] [2025-03-17 05:54:41,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:41,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:54:41,085 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-03-17 05:54:41,102 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-03-17 05:54:41,103 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:41,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:54:41,452 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 05:54:41,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:54:41,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346819625] [2025-03-17 05:54:41,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346819625] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:54:41,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:54:41,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 05:54:41,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385868088] [2025-03-17 05:54:41,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:54:41,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 05:54:41,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:54:41,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 05:54:41,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 05:54:41,453 INFO L87 Difference]: Start difference. First operand 603 states and 656 transitions. Second operand has 6 states, 5 states have (on average 12.2) internal successors, (61), 6 states have internal predecessors, (61), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-17 05:54:41,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:54:41,733 INFO L93 Difference]: Finished difference Result 1027 states and 1118 transitions. [2025-03-17 05:54:41,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 05:54:41,734 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 6 states have internal predecessors, (61), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 138 [2025-03-17 05:54:41,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:54:41,736 INFO L225 Difference]: With dead ends: 1027 [2025-03-17 05:54:41,736 INFO L226 Difference]: Without dead ends: 630 [2025-03-17 05:54:41,737 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-17 05:54:41,737 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 32 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 05:54:41,737 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 372 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 05:54:41,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2025-03-17 05:54:41,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 603. [2025-03-17 05:54:41,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 482 states have (on average 1.0435684647302905) internal successors, (503), 486 states have internal predecessors, (503), 76 states have call successors, (76), 44 states have call predecessors, (76), 44 states have return successors, (76), 72 states have call predecessors, (76), 76 states have call successors, (76) [2025-03-17 05:54:41,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 655 transitions. [2025-03-17 05:54:41,823 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 655 transitions. Word has length 138 [2025-03-17 05:54:41,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:54:41,824 INFO L471 AbstractCegarLoop]: Abstraction has 603 states and 655 transitions. [2025-03-17 05:54:41,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 6 states have internal predecessors, (61), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-17 05:54:41,824 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 655 transitions. [2025-03-17 05:54:41,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-03-17 05:54:41,824 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:54:41,824 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:54:41,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2025-03-17 05:54:41,825 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:54:41,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:54:41,825 INFO L85 PathProgramCache]: Analyzing trace with hash -119696255, now seen corresponding path program 1 times [2025-03-17 05:54:41,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:54:41,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464799086] [2025-03-17 05:54:41,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:41,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:54:41,835 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-03-17 05:54:41,854 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-03-17 05:54:41,854 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:41,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:54:42,207 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 05:54:42,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:54:42,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464799086] [2025-03-17 05:54:42,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464799086] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:54:42,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:54:42,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 05:54:42,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167265085] [2025-03-17 05:54:42,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:54:42,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 05:54:42,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:54:42,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 05:54:42,208 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 05:54:42,208 INFO L87 Difference]: Start difference. First operand 603 states and 655 transitions. Second operand has 6 states, 5 states have (on average 12.2) internal successors, (61), 6 states have internal predecessors, (61), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-17 05:54:42,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:54:42,446 INFO L93 Difference]: Finished difference Result 1025 states and 1113 transitions. [2025-03-17 05:54:42,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 05:54:42,446 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 6 states have internal predecessors, (61), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 138 [2025-03-17 05:54:42,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:54:42,449 INFO L225 Difference]: With dead ends: 1025 [2025-03-17 05:54:42,449 INFO L226 Difference]: Without dead ends: 628 [2025-03-17 05:54:42,449 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-17 05:54:42,450 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 34 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 05:54:42,450 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 442 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 05:54:42,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2025-03-17 05:54:42,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 603. [2025-03-17 05:54:42,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 482 states have (on average 1.04149377593361) internal successors, (502), 486 states have internal predecessors, (502), 76 states have call successors, (76), 44 states have call predecessors, (76), 44 states have return successors, (76), 72 states have call predecessors, (76), 76 states have call successors, (76) [2025-03-17 05:54:42,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 654 transitions. [2025-03-17 05:54:42,543 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 654 transitions. Word has length 138 [2025-03-17 05:54:42,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:54:42,543 INFO L471 AbstractCegarLoop]: Abstraction has 603 states and 654 transitions. [2025-03-17 05:54:42,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 6 states have internal predecessors, (61), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-17 05:54:42,543 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 654 transitions. [2025-03-17 05:54:42,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-03-17 05:54:42,544 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:54:42,544 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:54:42,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2025-03-17 05:54:42,544 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:54:42,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:54:42,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1927150718, now seen corresponding path program 1 times [2025-03-17 05:54:42,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:54:42,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591815672] [2025-03-17 05:54:42,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:42,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:54:42,559 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-03-17 05:54:42,579 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-03-17 05:54:42,580 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:42,580 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:54:42,922 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-03-17 05:54:42,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:54:42,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591815672] [2025-03-17 05:54:42,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591815672] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 05:54:42,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 05:54:42,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-17 05:54:42,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371337537] [2025-03-17 05:54:42,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:54:42,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 05:54:42,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:54:42,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 05:54:42,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2025-03-17 05:54:42,924 INFO L87 Difference]: Start difference. First operand 603 states and 654 transitions. Second operand has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-17 05:54:43,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:54:43,361 INFO L93 Difference]: Finished difference Result 716 states and 783 transitions. [2025-03-17 05:54:43,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 05:54:43,361 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 138 [2025-03-17 05:54:43,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:54:43,364 INFO L225 Difference]: With dead ends: 716 [2025-03-17 05:54:43,364 INFO L226 Difference]: Without dead ends: 714 [2025-03-17 05:54:43,364 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2025-03-17 05:54:43,365 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 74 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1699 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 05:54:43,365 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 1699 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 05:54:43,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2025-03-17 05:54:43,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 596. [2025-03-17 05:54:43,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 475 states have (on average 1.04) internal successors, (494), 479 states have internal predecessors, (494), 76 states have call successors, (76), 44 states have call predecessors, (76), 44 states have return successors, (76), 72 states have call predecessors, (76), 76 states have call successors, (76) [2025-03-17 05:54:43,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 646 transitions. [2025-03-17 05:54:43,465 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 646 transitions. Word has length 138 [2025-03-17 05:54:43,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:54:43,466 INFO L471 AbstractCegarLoop]: Abstraction has 596 states and 646 transitions. [2025-03-17 05:54:43,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-17 05:54:43,466 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 646 transitions. [2025-03-17 05:54:43,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2025-03-17 05:54:43,467 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 05:54:43,467 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 32, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:54:43,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2025-03-17 05:54:43,467 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 05:54:43,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 05:54:43,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1321898467, now seen corresponding path program 1 times [2025-03-17 05:54:43,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 05:54:43,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145715145] [2025-03-17 05:54:43,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:43,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 05:54:43,487 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 249 statements into 1 equivalence classes. [2025-03-17 05:54:43,586 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 249 of 249 statements. [2025-03-17 05:54:43,587 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:43,587 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 05:54:43,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [554659119] [2025-03-17 05:54:43,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 05:54:43,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:54:43,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 05:54:43,593 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 05:54:43,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-17 05:54:43,755 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 249 statements into 1 equivalence classes. [2025-03-17 05:54:43,942 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 249 of 249 statements. [2025-03-17 05:54:43,942 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 05:54:43,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 05:54:43,946 INFO L256 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-03-17 05:54:43,951 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 05:54:43,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2025-03-17 05:54:43,989 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 05:54:43,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 22 [2025-03-17 05:54:44,008 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 05:54:44,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 22 [2025-03-17 05:54:44,026 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 05:54:44,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 22 [2025-03-17 05:54:44,044 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 05:54:44,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 22 [2025-03-17 05:54:44,058 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 05:54:44,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 22 [2025-03-17 05:54:44,073 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 05:54:44,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 22 [2025-03-17 05:54:44,087 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 05:54:44,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 22 [2025-03-17 05:54:44,102 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 05:54:44,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 13 [2025-03-17 05:54:44,117 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 05:54:44,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 61 [2025-03-17 05:54:44,191 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 05:54:44,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 85 treesize of output 31 [2025-03-17 05:54:44,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2035 backedges. 940 proven. 113 refuted. 0 times theorem prover too weak. 982 trivial. 0 not checked. [2025-03-17 05:54:44,206 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 05:54:44,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2035 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2019 trivial. 0 not checked. [2025-03-17 05:54:44,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 05:54:44,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145715145] [2025-03-17 05:54:44,369 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-17 05:54:44,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554659119] [2025-03-17 05:54:44,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554659119] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-17 05:54:44,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 05:54:44,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2025-03-17 05:54:44,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391742143] [2025-03-17 05:54:44,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 05:54:44,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 05:54:44,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 05:54:44,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 05:54:44,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-17 05:54:44,370 INFO L87 Difference]: Start difference. First operand 596 states and 646 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-17 05:54:44,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 05:54:44,780 INFO L93 Difference]: Finished difference Result 1233 states and 1332 transitions. [2025-03-17 05:54:44,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 05:54:44,781 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 249 [2025-03-17 05:54:44,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 05:54:44,782 INFO L225 Difference]: With dead ends: 1233 [2025-03-17 05:54:44,782 INFO L226 Difference]: Without dead ends: 0 [2025-03-17 05:54:44,783 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 489 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-03-17 05:54:44,784 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 43 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 05:54:44,784 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 271 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 05:54:44,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-03-17 05:54:44,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-03-17 05:54:44,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 05:54:44,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-03-17 05:54:44,785 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 249 [2025-03-17 05:54:44,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 05:54:44,785 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-17 05:54:44,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-17 05:54:44,785 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-03-17 05:54:44,785 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-03-17 05:54:44,788 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-17 05:54:44,799 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-17 05:54:44,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 05:54:44,991 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 05:54:44,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.