./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-58.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed 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-ap_file-58.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 a41aa9d8768b1b5dd89ea1dccd189b98246dddc52870a67830fa0c3c6660983c --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 16:30:10,937 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 16:30:10,993 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 16:30:11,000 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 16:30:11,000 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 16:30:11,019 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 16:30:11,020 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 16:30:11,020 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 16:30:11,021 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 16:30:11,021 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 16:30:11,021 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 16:30:11,022 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 16:30:11,022 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 16:30:11,022 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 16:30:11,022 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 16:30:11,023 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 16:30:11,023 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 16:30:11,023 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 16:30:11,023 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 16:30:11,023 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 16:30:11,023 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 16:30:11,023 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 16:30:11,023 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 16:30:11,023 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 16:30:11,023 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 16:30:11,023 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 16:30:11,023 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 16:30:11,024 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 16:30:11,024 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 16:30:11,024 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 16:30:11,024 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 16:30:11,024 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 16:30:11,024 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 16:30:11,024 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 16:30:11,024 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 16:30:11,025 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 16:30:11,025 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 16:30:11,025 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 16:30:11,025 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 16:30:11,025 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 16:30:11,025 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 16:30:11,025 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 16:30:11,025 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 16:30:11,025 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 -> a41aa9d8768b1b5dd89ea1dccd189b98246dddc52870a67830fa0c3c6660983c [2025-03-08 16:30:11,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 16:30:11,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 16:30:11,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 16:30:11,246 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 16:30:11,246 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 16:30:11,248 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-58.i [2025-03-08 16:30:12,394 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e973de9c8/2a8997ce1c324e798198c76e74b558d5/FLAG5e56c68ff [2025-03-08 16:30:12,640 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 16:30:12,641 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-58.i [2025-03-08 16:30:12,649 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e973de9c8/2a8997ce1c324e798198c76e74b558d5/FLAG5e56c68ff [2025-03-08 16:30:12,666 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e973de9c8/2a8997ce1c324e798198c76e74b558d5 [2025-03-08 16:30:12,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 16:30:12,670 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 16:30:12,671 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 16:30:12,671 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 16:30:12,674 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 16:30:12,675 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 04:30:12" (1/1) ... [2025-03-08 16:30:12,677 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74f9d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:30:12, skipping insertion in model container [2025-03-08 16:30:12,677 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 04:30:12" (1/1) ... [2025-03-08 16:30:12,694 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 16:30:12,795 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-ap_file-58.i[917,930] [2025-03-08 16:30:12,842 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 16:30:12,852 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 16:30:12,859 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-ap_file-58.i[917,930] [2025-03-08 16:30:12,879 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 16:30:12,891 INFO L204 MainTranslator]: Completed translation [2025-03-08 16:30:12,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:30:12 WrapperNode [2025-03-08 16:30:12,893 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 16:30:12,894 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 16:30:12,894 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 16:30:12,894 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 16:30:12,898 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:30:12" (1/1) ... [2025-03-08 16:30:12,913 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:30:12" (1/1) ... [2025-03-08 16:30:12,939 INFO L138 Inliner]: procedures = 26, calls = 156, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 452 [2025-03-08 16:30:12,939 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 16:30:12,940 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 16:30:12,940 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 16:30:12,940 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 16:30:12,946 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:30:12" (1/1) ... [2025-03-08 16:30:12,946 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:30:12" (1/1) ... [2025-03-08 16:30:12,949 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:30:12" (1/1) ... [2025-03-08 16:30:12,970 INFO L175 MemorySlicer]: Split 125 memory accesses to 6 slices as follows [2, 6, 11, 7, 74, 25]. 59 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 1, 1, 1, 6, 2]. The 15 writes are split as follows [0, 1, 1, 3, 8, 2]. [2025-03-08 16:30:12,970 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:30:12" (1/1) ... [2025-03-08 16:30:12,970 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:30:12" (1/1) ... [2025-03-08 16:30:12,979 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:30:12" (1/1) ... [2025-03-08 16:30:12,983 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:30:12" (1/1) ... [2025-03-08 16:30:12,985 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:30:12" (1/1) ... [2025-03-08 16:30:12,986 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:30:12" (1/1) ... [2025-03-08 16:30:12,988 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 16:30:12,989 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 16:30:12,989 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 16:30:12,989 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 16:30:12,990 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:30:12" (1/1) ... [2025-03-08 16:30:12,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 16:30:13,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:30:13,019 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) [2025-03-08 16:30:13,022 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 [2025-03-08 16:30:13,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 16:30:13,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 16:30:13,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 16:30:13,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-08 16:30:13,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-08 16:30:13,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-08 16:30:13,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-08 16:30:13,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 16:30:13,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 16:30:13,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-08 16:30:13,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-08 16:30:13,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-08 16:30:13,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-08 16:30:13,043 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 16:30:13,043 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 16:30:13,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 16:30:13,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 16:30:13,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 16:30:13,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-08 16:30:13,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-08 16:30:13,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-08 16:30:13,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 16:30:13,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 16:30:13,137 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 16:30:13,138 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 16:30:13,495 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L106: havoc property_#t~mem68#1;havoc property_#t~ite83#1;havoc property_#t~mem74#1;havoc property_#t~mem70#1;havoc property_#t~mem69#1;havoc property_#t~ite73#1;havoc property_#t~mem71#1;havoc property_#t~mem72#1;havoc property_#t~mem77#1;havoc property_#t~mem75#1;havoc property_#t~mem76#1;havoc property_#t~ite82#1;havoc property_#t~mem79#1;havoc property_#t~mem78#1;havoc property_#t~mem81#1;havoc property_#t~mem80#1;havoc property_#t~mem87#1;havoc property_#t~mem84#1;havoc property_#t~mem85#1;havoc property_#t~mem86#1;havoc property_#t~ite115#1;havoc property_#t~mem90#1;havoc property_#t~mem88#1;havoc property_#t~mem89#1;havoc property_#t~short91#1;havoc property_#t~ite112#1;havoc property_#t~mem109#1;havoc property_#t~mem108#1;havoc property_#t~mem92#1;havoc property_#t~mem93#1;havoc property_#t~ite96#1;havoc property_#t~mem94#1;havoc property_#t~mem95#1;havoc property_#t~ite107#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~mem102#1;havoc property_#t~mem103#1;havoc property_#t~ite106#1;havoc property_#t~mem104#1;havoc property_#t~mem105#1;havoc property_#t~mem111#1;havoc property_#t~mem110#1;havoc property_#t~mem114#1;havoc property_#t~mem113#1;havoc property_#t~short116#1;havoc property_#t~mem117#1;havoc property_#t~mem118#1;havoc property_#t~ite122#1;havoc property_#t~mem121#1;havoc property_#t~mem119#1;havoc property_#t~mem120#1;havoc property_#t~short123#1;havoc property_#t~mem125#1;havoc property_#t~mem124#1;havoc property_#t~short126#1; [2025-03-08 16:30:13,532 INFO L? ?]: Removed 126 outVars from TransFormulas that were not future-live. [2025-03-08 16:30:13,534 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 16:30:13,547 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 16:30:13,549 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 16:30:13,550 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 04:30:13 BoogieIcfgContainer [2025-03-08 16:30:13,550 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 16:30:13,551 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 16:30:13,551 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 16:30:13,554 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 16:30:13,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 04:30:12" (1/3) ... [2025-03-08 16:30:13,555 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@464b1faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 04:30:13, skipping insertion in model container [2025-03-08 16:30:13,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:30:12" (2/3) ... [2025-03-08 16:30:13,556 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@464b1faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 04:30:13, skipping insertion in model container [2025-03-08 16:30:13,556 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 04:30:13" (3/3) ... [2025-03-08 16:30:13,557 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-58.i [2025-03-08 16:30:13,568 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 16:30:13,569 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-ap_file-58.i that has 2 procedures, 91 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 16:30:13,618 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 16:30:13,626 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;@123d733c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 16:30:13,627 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 16:30:13,630 INFO L276 IsEmpty]: Start isEmpty. Operand has 91 states, 73 states have (on average 1.3835616438356164) internal successors, (101), 74 states have internal predecessors, (101), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 16:30:13,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-03-08 16:30:13,640 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:30:13,640 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:30:13,640 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:30:13,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:30:13,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1310023672, now seen corresponding path program 1 times [2025-03-08 16:30:13,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:30:13,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16076730] [2025-03-08 16:30:13,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:30:13,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:30:13,734 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-08 16:30:13,759 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-08 16:30:13,760 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:30:13,760 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:30:13,879 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2025-03-08 16:30:13,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:30:13,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16076730] [2025-03-08 16:30:13,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16076730] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 16:30:13,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524952874] [2025-03-08 16:30:13,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:30:13,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:30:13,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:30:13,884 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) [2025-03-08 16:30:13,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 16:30:13,998 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-08 16:30:14,074 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-08 16:30:14,075 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:30:14,075 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:30:14,082 INFO L256 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 16:30:14,091 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 16:30:14,113 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2025-03-08 16:30:14,113 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 16:30:14,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524952874] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:30:14,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 16:30:14,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 16:30:14,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069260030] [2025-03-08 16:30:14,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:30:14,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 16:30:14,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:30:14,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 16:30:14,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 16:30:14,139 INFO L87 Difference]: Start difference. First operand has 91 states, 73 states have (on average 1.3835616438356164) internal successors, (101), 74 states have internal predecessors, (101), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 16:30:14,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:30:14,157 INFO L93 Difference]: Finished difference Result 172 states and 266 transitions. [2025-03-08 16:30:14,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 16:30:14,159 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 116 [2025-03-08 16:30:14,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:30:14,163 INFO L225 Difference]: With dead ends: 172 [2025-03-08 16:30:14,164 INFO L226 Difference]: Without dead ends: 84 [2025-03-08 16:30:14,168 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 16:30:14,170 INFO L435 NwaCegarLoop]: 118 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, 118 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 [2025-03-08 16:30:14,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 16:30:14,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2025-03-08 16:30:14,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2025-03-08 16:30:14,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 67 states have (on average 1.3134328358208955) internal successors, (88), 67 states have internal predecessors, (88), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 16:30:14,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 118 transitions. [2025-03-08 16:30:14,202 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 118 transitions. Word has length 116 [2025-03-08 16:30:14,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:30:14,202 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 118 transitions. [2025-03-08 16:30:14,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 16:30:14,202 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 118 transitions. [2025-03-08 16:30:14,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-03-08 16:30:14,207 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:30:14,207 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:30:14,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-08 16:30:14,408 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 [2025-03-08 16:30:14,408 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:30:14,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:30:14,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1552441257, now seen corresponding path program 1 times [2025-03-08 16:30:14,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:30:14,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572454091] [2025-03-08 16:30:14,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:30:14,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:30:14,436 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-08 16:30:14,467 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-08 16:30:14,467 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:30:14,467 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:30:14,666 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2025-03-08 16:30:14,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:30:14,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572454091] [2025-03-08 16:30:14,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572454091] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:30:14,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:30:14,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 16:30:14,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950784593] [2025-03-08 16:30:14,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:30:14,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 16:30:14,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:30:14,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 16:30:14,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 16:30:14,668 INFO L87 Difference]: Start difference. First operand 84 states and 118 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 16:30:14,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:30:14,701 INFO L93 Difference]: Finished difference Result 168 states and 237 transitions. [2025-03-08 16:30:14,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 16:30:14,704 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 116 [2025-03-08 16:30:14,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:30:14,706 INFO L225 Difference]: With dead ends: 168 [2025-03-08 16:30:14,707 INFO L226 Difference]: Without dead ends: 87 [2025-03-08 16:30:14,708 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 16:30:14,708 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 1 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 16:30:14,709 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 336 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 16:30:14,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2025-03-08 16:30:14,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2025-03-08 16:30:14,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 69 states have (on average 1.3043478260869565) internal successors, (90), 69 states have internal predecessors, (90), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 16:30:14,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 120 transitions. [2025-03-08 16:30:14,715 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 120 transitions. Word has length 116 [2025-03-08 16:30:14,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:30:14,716 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 120 transitions. [2025-03-08 16:30:14,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 16:30:14,717 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 120 transitions. [2025-03-08 16:30:14,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-03-08 16:30:14,718 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:30:14,718 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:30:14,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 16:30:14,718 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:30:14,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:30:14,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1551517736, now seen corresponding path program 1 times [2025-03-08 16:30:14,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:30:14,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028423468] [2025-03-08 16:30:14,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:30:14,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:30:14,736 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-08 16:30:14,894 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-08 16:30:14,894 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:30:14,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:30:15,162 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2025-03-08 16:30:15,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:30:15,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028423468] [2025-03-08 16:30:15,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028423468] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:30:15,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:30:15,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 16:30:15,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54291463] [2025-03-08 16:30:15,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:30:15,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 16:30:15,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:30:15,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 16:30:15,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 16:30:15,164 INFO L87 Difference]: Start difference. First operand 86 states and 120 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 16:30:15,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:30:15,336 INFO L93 Difference]: Finished difference Result 239 states and 334 transitions. [2025-03-08 16:30:15,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 16:30:15,336 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 116 [2025-03-08 16:30:15,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:30:15,337 INFO L225 Difference]: With dead ends: 239 [2025-03-08 16:30:15,337 INFO L226 Difference]: Without dead ends: 156 [2025-03-08 16:30:15,338 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 [2025-03-08 16:30:15,338 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 92 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 16:30:15,339 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 500 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 16:30:15,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2025-03-08 16:30:15,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 153. [2025-03-08 16:30:15,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 122 states have (on average 1.2950819672131149) internal successors, (158), 123 states have internal predecessors, (158), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2025-03-08 16:30:15,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 214 transitions. [2025-03-08 16:30:15,354 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 214 transitions. Word has length 116 [2025-03-08 16:30:15,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:30:15,354 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 214 transitions. [2025-03-08 16:30:15,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 16:30:15,354 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 214 transitions. [2025-03-08 16:30:15,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-03-08 16:30:15,355 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:30:15,355 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:30:15,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 16:30:15,355 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:30:15,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:30:15,356 INFO L85 PathProgramCache]: Analyzing trace with hash -806669732, now seen corresponding path program 1 times [2025-03-08 16:30:15,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:30:15,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030997118] [2025-03-08 16:30:15,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:30:15,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:30:15,380 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-08 16:30:15,480 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-08 16:30:15,480 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:30:15,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:30:16,471 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2025-03-08 16:30:16,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:30:16,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030997118] [2025-03-08 16:30:16,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030997118] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:30:16,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:30:16,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-08 16:30:16,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335138804] [2025-03-08 16:30:16,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:30:16,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 16:30:16,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:30:16,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 16:30:16,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-03-08 16:30:16,475 INFO L87 Difference]: Start difference. First operand 153 states and 214 transitions. Second operand has 11 states, 10 states have (on average 4.4) internal successors, (44), 11 states have internal predecessors, (44), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2025-03-08 16:30:16,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:30:16,969 INFO L93 Difference]: Finished difference Result 360 states and 501 transitions. [2025-03-08 16:30:16,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 16:30:16,970 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.4) internal successors, (44), 11 states have internal predecessors, (44), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 116 [2025-03-08 16:30:16,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:30:16,973 INFO L225 Difference]: With dead ends: 360 [2025-03-08 16:30:16,974 INFO L226 Difference]: Without dead ends: 210 [2025-03-08 16:30:16,975 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2025-03-08 16:30:16,977 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 444 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 16:30:16,977 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 461 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 16:30:16,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2025-03-08 16:30:17,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 207. [2025-03-08 16:30:17,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 170 states have (on average 1.3) internal successors, (221), 172 states have internal predecessors, (221), 33 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33) [2025-03-08 16:30:17,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 287 transitions. [2025-03-08 16:30:17,006 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 287 transitions. Word has length 116 [2025-03-08 16:30:17,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:30:17,007 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 287 transitions. [2025-03-08 16:30:17,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.4) internal successors, (44), 11 states have internal predecessors, (44), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2025-03-08 16:30:17,007 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 287 transitions. [2025-03-08 16:30:17,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-03-08 16:30:17,008 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:30:17,008 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:30:17,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 16:30:17,008 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:30:17,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:30:17,009 INFO L85 PathProgramCache]: Analyzing trace with hash -677587013, now seen corresponding path program 1 times [2025-03-08 16:30:17,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:30:17,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845139839] [2025-03-08 16:30:17,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:30:17,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:30:17,023 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-08 16:30:17,065 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-08 16:30:17,066 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:30:17,066 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:30:17,788 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2025-03-08 16:30:17,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:30:17,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845139839] [2025-03-08 16:30:17,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845139839] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:30:17,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:30:17,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 16:30:17,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981442954] [2025-03-08 16:30:17,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:30:17,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 16:30:17,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:30:17,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 16:30:17,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-08 16:30:17,790 INFO L87 Difference]: Start difference. First operand 207 states and 287 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 16:30:18,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:30:18,353 INFO L93 Difference]: Finished difference Result 427 states and 589 transitions. [2025-03-08 16:30:18,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 16:30:18,353 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 116 [2025-03-08 16:30:18,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:30:18,355 INFO L225 Difference]: With dead ends: 427 [2025-03-08 16:30:18,356 INFO L226 Difference]: Without dead ends: 223 [2025-03-08 16:30:18,356 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-08 16:30:18,357 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 297 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 16:30:18,357 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 358 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 16:30:18,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2025-03-08 16:30:18,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 219. [2025-03-08 16:30:18,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 176 states have (on average 1.2784090909090908) internal successors, (225), 179 states have internal predecessors, (225), 38 states have call successors, (38), 4 states have call predecessors, (38), 4 states have return successors, (38), 35 states have call predecessors, (38), 38 states have call successors, (38) [2025-03-08 16:30:18,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 301 transitions. [2025-03-08 16:30:18,415 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 301 transitions. Word has length 116 [2025-03-08 16:30:18,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:30:18,415 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 301 transitions. [2025-03-08 16:30:18,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 16:30:18,415 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 301 transitions. [2025-03-08 16:30:18,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-03-08 16:30:18,416 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:30:18,416 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:30:18,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 16:30:18,417 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:30:18,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:30:18,417 INFO L85 PathProgramCache]: Analyzing trace with hash 546639965, now seen corresponding path program 1 times [2025-03-08 16:30:18,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:30:18,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093120508] [2025-03-08 16:30:18,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:30:18,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:30:18,432 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-08 16:30:18,477 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-08 16:30:18,478 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:30:18,478 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:30:19,110 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2025-03-08 16:30:19,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:30:19,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093120508] [2025-03-08 16:30:19,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093120508] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:30:19,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:30:19,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 16:30:19,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255566351] [2025-03-08 16:30:19,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:30:19,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 16:30:19,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:30:19,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 16:30:19,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-08 16:30:19,112 INFO L87 Difference]: Start difference. First operand 219 states and 301 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 16:30:19,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:30:19,572 INFO L93 Difference]: Finished difference Result 427 states and 585 transitions. [2025-03-08 16:30:19,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 16:30:19,573 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 116 [2025-03-08 16:30:19,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:30:19,574 INFO L225 Difference]: With dead ends: 427 [2025-03-08 16:30:19,574 INFO L226 Difference]: Without dead ends: 226 [2025-03-08 16:30:19,574 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-08 16:30:19,575 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 254 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 16:30:19,575 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 373 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 16:30:19,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2025-03-08 16:30:19,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 186. [2025-03-08 16:30:19,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 148 states have (on average 1.2635135135135136) internal successors, (187), 150 states have internal predecessors, (187), 33 states have call successors, (33), 4 states have call predecessors, (33), 4 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33) [2025-03-08 16:30:19,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 253 transitions. [2025-03-08 16:30:19,602 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 253 transitions. Word has length 116 [2025-03-08 16:30:19,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:30:19,602 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 253 transitions. [2025-03-08 16:30:19,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 16:30:19,603 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 253 transitions. [2025-03-08 16:30:19,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-03-08 16:30:19,616 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:30:19,617 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:30:19,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 16:30:19,617 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:30:19,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:30:19,617 INFO L85 PathProgramCache]: Analyzing trace with hash 675722684, now seen corresponding path program 1 times [2025-03-08 16:30:19,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:30:19,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213578139] [2025-03-08 16:30:19,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:30:19,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:30:19,629 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-08 16:30:19,654 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-08 16:30:19,656 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:30:19,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:30:20,427 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2025-03-08 16:30:20,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:30:20,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213578139] [2025-03-08 16:30:20,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213578139] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:30:20,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:30:20,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-08 16:30:20,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342404820] [2025-03-08 16:30:20,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:30:20,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 16:30:20,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:30:20,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 16:30:20,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-03-08 16:30:20,429 INFO L87 Difference]: Start difference. First operand 186 states and 253 transitions. Second operand has 11 states, 10 states have (on average 4.4) internal successors, (44), 11 states have internal predecessors, (44), 3 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 16:30:21,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:30:21,110 INFO L93 Difference]: Finished difference Result 394 states and 536 transitions. [2025-03-08 16:30:21,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 16:30:21,111 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.4) internal successors, (44), 11 states have internal predecessors, (44), 3 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 116 [2025-03-08 16:30:21,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:30:21,112 INFO L225 Difference]: With dead ends: 394 [2025-03-08 16:30:21,113 INFO L226 Difference]: Without dead ends: 226 [2025-03-08 16:30:21,114 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2025-03-08 16:30:21,114 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 212 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 16:30:21,115 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 740 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 16:30:21,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2025-03-08 16:30:21,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 183. [2025-03-08 16:30:21,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 145 states have (on average 1.2620689655172415) internal successors, (183), 147 states have internal predecessors, (183), 33 states have call successors, (33), 4 states have call predecessors, (33), 4 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33) [2025-03-08 16:30:21,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 249 transitions. [2025-03-08 16:30:21,153 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 249 transitions. Word has length 116 [2025-03-08 16:30:21,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:30:21,154 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 249 transitions. [2025-03-08 16:30:21,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.4) internal successors, (44), 11 states have internal predecessors, (44), 3 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 16:30:21,154 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 249 transitions. [2025-03-08 16:30:21,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-03-08 16:30:21,155 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:30:21,155 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:30:21,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 16:30:21,155 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:30:21,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:30:21,156 INFO L85 PathProgramCache]: Analyzing trace with hash -6418379, now seen corresponding path program 1 times [2025-03-08 16:30:21,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:30:21,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49848602] [2025-03-08 16:30:21,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:30:21,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:30:21,170 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-03-08 16:30:21,231 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-03-08 16:30:21,231 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:30:21,231 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:30:22,105 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2025-03-08 16:30:22,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:30:22,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49848602] [2025-03-08 16:30:22,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49848602] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:30:22,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:30:22,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-08 16:30:22,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038048865] [2025-03-08 16:30:22,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:30:22,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-08 16:30:22,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:30:22,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-08 16:30:22,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2025-03-08 16:30:22,107 INFO L87 Difference]: Start difference. First operand 183 states and 249 transitions. Second operand has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 14 states have internal predecessors, (45), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2025-03-08 16:30:23,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:30:23,070 INFO L93 Difference]: Finished difference Result 408 states and 557 transitions. [2025-03-08 16:30:23,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-08 16:30:23,070 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 14 states have internal predecessors, (45), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 117 [2025-03-08 16:30:23,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:30:23,072 INFO L225 Difference]: With dead ends: 408 [2025-03-08 16:30:23,072 INFO L226 Difference]: Without dead ends: 243 [2025-03-08 16:30:23,072 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2025-03-08 16:30:23,073 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 176 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 16:30:23,073 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 726 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 16:30:23,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2025-03-08 16:30:23,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 225. [2025-03-08 16:30:23,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 187 states have (on average 1.2941176470588236) internal successors, (242), 189 states have internal predecessors, (242), 33 states have call successors, (33), 4 states have call predecessors, (33), 4 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33) [2025-03-08 16:30:23,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 308 transitions. [2025-03-08 16:30:23,101 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 308 transitions. Word has length 117 [2025-03-08 16:30:23,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:30:23,102 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 308 transitions. [2025-03-08 16:30:23,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 14 states have internal predecessors, (45), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2025-03-08 16:30:23,102 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 308 transitions. [2025-03-08 16:30:23,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-03-08 16:30:23,103 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:30:23,103 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:30:23,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 16:30:23,104 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:30:23,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:30:23,104 INFO L85 PathProgramCache]: Analyzing trace with hash 122664340, now seen corresponding path program 1 times [2025-03-08 16:30:23,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:30:23,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809185680] [2025-03-08 16:30:23,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:30:23,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:30:23,121 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-03-08 16:30:23,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-03-08 16:30:23,168 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:30:23,168 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:30:23,750 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2025-03-08 16:30:23,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:30:23,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809185680] [2025-03-08 16:30:23,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809185680] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:30:23,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:30:23,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-08 16:30:23,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377287623] [2025-03-08 16:30:23,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:30:23,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 16:30:23,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:30:23,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 16:30:23,751 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-03-08 16:30:23,752 INFO L87 Difference]: Start difference. First operand 225 states and 308 transitions. Second operand has 11 states, 10 states have (on average 4.5) internal successors, (45), 11 states have internal predecessors, (45), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2025-03-08 16:30:24,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:30:24,231 INFO L93 Difference]: Finished difference Result 449 states and 614 transitions. [2025-03-08 16:30:24,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 16:30:24,232 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.5) internal successors, (45), 11 states have internal predecessors, (45), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 117 [2025-03-08 16:30:24,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:30:24,233 INFO L225 Difference]: With dead ends: 449 [2025-03-08 16:30:24,233 INFO L226 Difference]: Without dead ends: 227 [2025-03-08 16:30:24,234 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2025-03-08 16:30:24,236 INFO L435 NwaCegarLoop]: 93 mSDtfsCounter, 178 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 16:30:24,237 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 386 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 16:30:24,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2025-03-08 16:30:24,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 224. [2025-03-08 16:30:24,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 186 states have (on average 1.2903225806451613) internal successors, (240), 188 states have internal predecessors, (240), 33 states have call successors, (33), 4 states have call predecessors, (33), 4 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33) [2025-03-08 16:30:24,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 306 transitions. [2025-03-08 16:30:24,261 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 306 transitions. Word has length 117 [2025-03-08 16:30:24,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:30:24,261 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 306 transitions. [2025-03-08 16:30:24,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.5) internal successors, (45), 11 states have internal predecessors, (45), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2025-03-08 16:30:24,262 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 306 transitions. [2025-03-08 16:30:24,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-03-08 16:30:24,263 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:30:24,263 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:30:24,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 16:30:24,263 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:30:24,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:30:24,264 INFO L85 PathProgramCache]: Analyzing trace with hash 738429625, now seen corresponding path program 1 times [2025-03-08 16:30:24,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:30:24,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124630766] [2025-03-08 16:30:24,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:30:24,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:30:24,284 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-03-08 16:30:24,301 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-03-08 16:30:24,302 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:30:24,302 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:30:24,405 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2025-03-08 16:30:24,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:30:24,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124630766] [2025-03-08 16:30:24,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124630766] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:30:24,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:30:24,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 16:30:24,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442547220] [2025-03-08 16:30:24,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:30:24,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 16:30:24,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:30:24,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 16:30:24,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 16:30:24,407 INFO L87 Difference]: Start difference. First operand 224 states and 306 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 16:30:24,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:30:24,536 INFO L93 Difference]: Finished difference Result 446 states and 605 transitions. [2025-03-08 16:30:24,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 16:30:24,537 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 117 [2025-03-08 16:30:24,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:30:24,538 INFO L225 Difference]: With dead ends: 446 [2025-03-08 16:30:24,538 INFO L226 Difference]: Without dead ends: 225 [2025-03-08 16:30:24,539 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 [2025-03-08 16:30:24,539 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 94 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 16:30:24,539 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 439 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 16:30:24,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2025-03-08 16:30:24,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 222. [2025-03-08 16:30:24,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 183 states have (on average 1.2677595628415301) internal successors, (232), 185 states have internal predecessors, (232), 33 states have call successors, (33), 5 states have call predecessors, (33), 5 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33) [2025-03-08 16:30:24,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 298 transitions. [2025-03-08 16:30:24,563 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 298 transitions. Word has length 117 [2025-03-08 16:30:24,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:30:24,563 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 298 transitions. [2025-03-08 16:30:24,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 16:30:24,563 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 298 transitions. [2025-03-08 16:30:24,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-03-08 16:30:24,564 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:30:24,564 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:30:24,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 16:30:24,564 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:30:24,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:30:24,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1003490732, now seen corresponding path program 1 times [2025-03-08 16:30:24,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:30:24,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262744462] [2025-03-08 16:30:24,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:30:24,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:30:24,580 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-03-08 16:30:24,599 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-03-08 16:30:24,599 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:30:24,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:30:25,120 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2025-03-08 16:30:25,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:30:25,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262744462] [2025-03-08 16:30:25,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262744462] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:30:25,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:30:25,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-08 16:30:25,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264350998] [2025-03-08 16:30:25,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:30:25,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 16:30:25,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:30:25,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 16:30:25,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-03-08 16:30:25,121 INFO L87 Difference]: Start difference. First operand 222 states and 298 transitions. Second operand has 11 states, 10 states have (on average 4.5) internal successors, (45), 11 states have internal predecessors, (45), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2025-03-08 16:30:25,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:30:25,689 INFO L93 Difference]: Finished difference Result 448 states and 598 transitions. [2025-03-08 16:30:25,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 16:30:25,690 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.5) internal successors, (45), 11 states have internal predecessors, (45), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 117 [2025-03-08 16:30:25,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:30:25,692 INFO L225 Difference]: With dead ends: 448 [2025-03-08 16:30:25,692 INFO L226 Difference]: Without dead ends: 229 [2025-03-08 16:30:25,692 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2025-03-08 16:30:25,693 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 245 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 16:30:25,693 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 401 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 16:30:25,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2025-03-08 16:30:25,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 130. [2025-03-08 16:30:25,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 111 states have (on average 1.2702702702702702) internal successors, (141), 111 states have internal predecessors, (141), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 16:30:25,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 171 transitions. [2025-03-08 16:30:25,716 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 171 transitions. Word has length 117 [2025-03-08 16:30:25,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:30:25,716 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 171 transitions. [2025-03-08 16:30:25,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.5) internal successors, (45), 11 states have internal predecessors, (45), 4 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2025-03-08 16:30:25,716 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 171 transitions. [2025-03-08 16:30:25,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-03-08 16:30:25,717 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:30:25,719 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:30:25,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 16:30:25,719 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:30:25,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:30:25,719 INFO L85 PathProgramCache]: Analyzing trace with hash -874408013, now seen corresponding path program 1 times [2025-03-08 16:30:25,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:30:25,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383648078] [2025-03-08 16:30:25,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:30:25,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:30:25,733 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-03-08 16:30:25,767 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-03-08 16:30:25,768 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:30:25,768 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:30:26,153 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2025-03-08 16:30:26,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:30:26,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383648078] [2025-03-08 16:30:26,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383648078] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:30:26,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:30:26,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 16:30:26,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937477785] [2025-03-08 16:30:26,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:30:26,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 16:30:26,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:30:26,155 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 16:30:26,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-08 16:30:26,155 INFO L87 Difference]: Start difference. First operand 130 states and 171 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 16:30:26,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:30:26,672 INFO L93 Difference]: Finished difference Result 297 states and 391 transitions. [2025-03-08 16:30:26,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 16:30:26,672 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 117 [2025-03-08 16:30:26,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:30:26,674 INFO L225 Difference]: With dead ends: 297 [2025-03-08 16:30:26,674 INFO L226 Difference]: Without dead ends: 170 [2025-03-08 16:30:26,675 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2025-03-08 16:30:26,675 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 131 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 16:30:26,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 818 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 16:30:26,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2025-03-08 16:30:26,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 127. [2025-03-08 16:30:26,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 108 states have (on average 1.2685185185185186) internal successors, (137), 108 states have internal predecessors, (137), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 16:30:26,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 167 transitions. [2025-03-08 16:30:26,696 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 167 transitions. Word has length 117 [2025-03-08 16:30:26,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:30:26,696 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 167 transitions. [2025-03-08 16:30:26,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 16:30:26,696 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 167 transitions. [2025-03-08 16:30:26,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2025-03-08 16:30:26,697 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:30:26,697 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:30:26,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 16:30:26,698 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:30:26,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:30:26,698 INFO L85 PathProgramCache]: Analyzing trace with hash -384606583, now seen corresponding path program 1 times [2025-03-08 16:30:26,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:30:26,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848362416] [2025-03-08 16:30:26,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:30:26,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:30:26,709 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-03-08 16:30:26,771 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-03-08 16:30:26,771 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:30:26,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:30:26,932 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2025-03-08 16:30:26,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:30:26,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848362416] [2025-03-08 16:30:26,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848362416] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:30:26,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:30:26,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 16:30:26,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240250706] [2025-03-08 16:30:26,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:30:26,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 16:30:26,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:30:26,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 16:30:26,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 16:30:26,934 INFO L87 Difference]: Start difference. First operand 127 states and 167 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 16:30:27,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:30:27,075 INFO L93 Difference]: Finished difference Result 310 states and 403 transitions. [2025-03-08 16:30:27,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 16:30:27,075 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 118 [2025-03-08 16:30:27,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:30:27,077 INFO L225 Difference]: With dead ends: 310 [2025-03-08 16:30:27,077 INFO L226 Difference]: Without dead ends: 186 [2025-03-08 16:30:27,077 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-08 16:30:27,078 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 57 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 16:30:27,078 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 555 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 16:30:27,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2025-03-08 16:30:27,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 147. [2025-03-08 16:30:27,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 128 states have (on average 1.234375) internal successors, (158), 128 states have internal predecessors, (158), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 16:30:27,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 188 transitions. [2025-03-08 16:30:27,096 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 188 transitions. Word has length 118 [2025-03-08 16:30:27,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:30:27,096 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 188 transitions. [2025-03-08 16:30:27,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 16:30:27,096 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 188 transitions. [2025-03-08 16:30:27,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2025-03-08 16:30:27,097 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:30:27,097 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:30:27,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 16:30:27,097 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:30:27,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:30:27,098 INFO L85 PathProgramCache]: Analyzing trace with hash -2063231675, now seen corresponding path program 1 times [2025-03-08 16:30:27,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:30:27,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602068447] [2025-03-08 16:30:27,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:30:27,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:30:27,112 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 119 statements into 1 equivalence classes. [2025-03-08 16:30:27,185 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 119 of 119 statements. [2025-03-08 16:30:27,186 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:30:27,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:30:28,775 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2025-03-08 16:30:28,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:30:28,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602068447] [2025-03-08 16:30:28,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602068447] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 16:30:28,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67933519] [2025-03-08 16:30:28,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:30:28,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:30:28,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:30:28,778 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) [2025-03-08 16:30:28,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 16:30:28,870 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 119 statements into 1 equivalence classes. [2025-03-08 16:30:29,252 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 119 of 119 statements. [2025-03-08 16:30:29,252 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:30:29,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:30:29,255 INFO L256 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 104 conjuncts are in the unsatisfiable core [2025-03-08 16:30:29,269 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 16:30:30,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-08 16:30:31,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-08 16:30:31,594 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 [2025-03-08 16:30:32,496 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 0 case distinctions, treesize of input 43 treesize of output 30 [2025-03-08 16:30:33,255 INFO L349 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2025-03-08 16:30:33,255 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 1 case distinctions, treesize of input 25 treesize of output 31 [2025-03-08 16:30:33,330 INFO L349 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2025-03-08 16:30:33,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 43 treesize of output 44 [2025-03-08 16:30:33,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 16:30:33,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 16:30:33,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 16:30:33,605 INFO L349 Elim1Store]: treesize reduction 92, result has 27.6 percent of original size [2025-03-08 16:30:33,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 54 treesize of output 81 [2025-03-08 16:30:37,533 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 49 treesize of output 37 [2025-03-08 16:30:37,543 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 46 treesize of output 34 [2025-03-08 16:30:38,701 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 16:30:38,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 3 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 117 case distinctions, treesize of input 210 treesize of output 1206