./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-37.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-37.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 bb0766965719962bb88d82eca60f2d4be80ff0b6b6f05c2a75f9469a0fc9b6e7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 06:08:05,708 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 06:08:05,837 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 06:08:05,847 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 06:08:05,854 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 06:08:05,897 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 06:08:05,902 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 06:08:05,903 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 06:08:05,904 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 06:08:05,904 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 06:08:05,904 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 06:08:05,904 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 06:08:05,904 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 06:08:05,904 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 06:08:05,904 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 06:08:05,904 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 06:08:05,904 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 06:08:05,904 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 06:08:05,905 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 06:08:05,905 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 06:08:05,905 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 06:08:05,905 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 06:08:05,905 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 06:08:05,905 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 06:08:05,905 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 06:08:05,905 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 06:08:05,905 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 06:08:05,905 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 06:08:05,905 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 06:08:05,905 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 06:08:05,905 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 06:08:05,905 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 06:08:05,905 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:08:05,905 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 06:08:05,905 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 06:08:05,906 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 06:08:05,906 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 06:08:05,906 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 06:08:05,906 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 06:08:05,906 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 06:08:05,906 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 06:08:05,906 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 06:08:05,906 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 06:08:05,906 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 -> bb0766965719962bb88d82eca60f2d4be80ff0b6b6f05c2a75f9469a0fc9b6e7 [2025-03-17 06:08:06,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 06:08:06,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 06:08:06,491 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 06:08:06,493 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 06:08:06,493 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 06:08:06,498 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-37.i [2025-03-17 06:08:08,351 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41f973ff4/1deb84de307c4c37a7cb74715b1b8ef1/FLAGfb1063a56 [2025-03-17 06:08:08,840 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 06:08:08,842 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-37.i [2025-03-17 06:08:08,858 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41f973ff4/1deb84de307c4c37a7cb74715b1b8ef1/FLAGfb1063a56 [2025-03-17 06:08:08,975 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41f973ff4/1deb84de307c4c37a7cb74715b1b8ef1 [2025-03-17 06:08:08,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 06:08:08,983 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 06:08:08,988 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 06:08:08,988 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 06:08:08,995 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 06:08:08,998 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:08:08" (1/1) ... [2025-03-17 06:08:09,001 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3468dbfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:08, skipping insertion in model container [2025-03-17 06:08:09,005 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:08:08" (1/1) ... [2025-03-17 06:08:09,033 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 06:08:09,243 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-37.i[917,930] [2025-03-17 06:08:09,363 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:08:09,388 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 06:08:09,403 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-37.i[917,930] [2025-03-17 06:08:09,465 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:08:09,508 INFO L204 MainTranslator]: Completed translation [2025-03-17 06:08:09,508 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:09 WrapperNode [2025-03-17 06:08:09,513 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 06:08:09,514 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 06:08:09,514 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 06:08:09,514 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 06:08:09,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:09" (1/1) ... [2025-03-17 06:08:09,548 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:09" (1/1) ... [2025-03-17 06:08:09,618 INFO L138 Inliner]: procedures = 30, calls = 151, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 479 [2025-03-17 06:08:09,618 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 06:08:09,619 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 06:08:09,619 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 06:08:09,619 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 06:08:09,637 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:09" (1/1) ... [2025-03-17 06:08:09,640 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:09" (1/1) ... [2025-03-17 06:08:09,647 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:09" (1/1) ... [2025-03-17 06:08:09,666 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2025-03-17 06:08:09,670 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:09" (1/1) ... [2025-03-17 06:08:09,671 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:09" (1/1) ... [2025-03-17 06:08:09,702 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:09" (1/1) ... [2025-03-17 06:08:09,704 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:09" (1/1) ... [2025-03-17 06:08:09,709 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:09" (1/1) ... [2025-03-17 06:08:09,718 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:09" (1/1) ... [2025-03-17 06:08:09,729 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 06:08:09,730 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 06:08:09,734 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 06:08:09,735 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 06:08:09,736 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:09" (1/1) ... [2025-03-17 06:08:09,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:08:09,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:08:09,796 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 06:08:09,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 06:08:09,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 06:08:09,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2025-03-17 06:08:09,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2025-03-17 06:08:09,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2025-03-17 06:08:09,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-03-17 06:08:09,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2025-03-17 06:08:09,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-03-17 06:08:09,854 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 06:08:09,854 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 06:08:09,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-17 06:08:09,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 06:08:09,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 06:08:10,055 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 06:08:10,061 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 06:08:10,778 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L123: havoc property_#t~mem71#1;havoc property_#t~mem72#1;havoc property_#t~mem73#1;havoc property_#t~mem74#1;havoc property_#t~bitwise75#1;havoc property_#t~ite80#1;havoc property_#t~mem77#1;havoc property_#t~mem76#1;havoc property_#t~mem79#1;havoc property_#t~mem78#1;havoc property_#t~mem85#1;havoc property_#t~mem81#1;havoc property_#t~ite84#1;havoc property_#t~mem82#1;havoc property_#t~mem83#1;havoc property_#t~ite92#1;havoc property_#t~mem89#1;havoc property_#t~mem87#1;havoc property_#t~mem86#1;havoc property_#t~mem88#1;havoc property_#t~mem91#1;havoc property_#t~mem90#1;havoc property_#t~short93#1;havoc property_#t~mem94#1;havoc property_#t~ite116#1;havoc property_#t~mem97#1;havoc property_#t~mem95#1;havoc property_#t~mem96#1;havoc property_#t~mem103#1;havoc property_#t~mem98#1;havoc property_#t~mem99#1;havoc property_#t~ite102#1;havoc property_#t~mem100#1;havoc property_#t~mem101#1;havoc property_#t~mem104#1;havoc property_#t~ite115#1;havoc property_#t~mem114#1;havoc property_#t~mem105#1;havoc property_#t~ite107#1;havoc property_#t~mem106#1;havoc property_#t~mem108#1;havoc property_#t~ite113#1;havoc property_#t~mem109#1;havoc property_#t~ite111#1;havoc property_#t~mem110#1;havoc property_#t~mem112#1;havoc property_#t~short117#1;havoc property_#t~mem119#1;havoc property_#t~mem118#1;havoc property_#t~short120#1;havoc property_#t~mem122#1;havoc property_#t~mem121#1;havoc property_#t~short123#1;havoc property_#t~mem125#1;havoc property_#t~mem124#1;havoc property_#t~short126#1; [2025-03-17 06:08:10,863 INFO L? ?]: Removed 138 outVars from TransFormulas that were not future-live. [2025-03-17 06:08:10,863 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 06:08:10,899 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 06:08:10,899 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 06:08:10,900 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:08:10 BoogieIcfgContainer [2025-03-17 06:08:10,900 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 06:08:10,902 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 06:08:10,903 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 06:08:10,907 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 06:08:10,907 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:08:08" (1/3) ... [2025-03-17 06:08:10,908 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19506e1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:08:10, skipping insertion in model container [2025-03-17 06:08:10,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:08:09" (2/3) ... [2025-03-17 06:08:10,913 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19506e1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:08:10, skipping insertion in model container [2025-03-17 06:08:10,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:08:10" (3/3) ... [2025-03-17 06:08:10,918 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-37.i [2025-03-17 06:08:10,943 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 06:08:10,945 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-sp_file-37.i that has 2 procedures, 99 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-17 06:08:11,031 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 06:08:11,057 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;@58f6892c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 06:08:11,057 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 06:08:11,066 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 81 states have (on average 1.4444444444444444) internal successors, (117), 82 states have internal predecessors, (117), 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) [2025-03-17 06:08:11,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2025-03-17 06:08:11,080 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:08:11,081 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, 1] [2025-03-17 06:08:11,082 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:08:11,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:08:11,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1490532990, now seen corresponding path program 1 times [2025-03-17 06:08:11,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:08:11,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176000183] [2025-03-17 06:08:11,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:08:11,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:08:11,346 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-03-17 06:08:11,434 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-03-17 06:08:11,438 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:08:11,438 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:08:11,665 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2025-03-17 06:08:11,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:08:11,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176000183] [2025-03-17 06:08:11,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176000183] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:08:11,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874338873] [2025-03-17 06:08:11,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:08:11,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:08:11,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:08:11,677 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:08:11,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 06:08:11,927 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-03-17 06:08:12,085 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-03-17 06:08:12,086 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:08:12,086 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:08:12,094 INFO L256 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 06:08:12,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:08:12,147 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2025-03-17 06:08:12,148 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:08:12,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874338873] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:08:12,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:08:12,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 06:08:12,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881195130] [2025-03-17 06:08:12,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:08:12,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 06:08:12,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:08:12,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 06:08:12,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 06:08:12,197 INFO L87 Difference]: Start difference. First operand has 99 states, 81 states have (on average 1.4444444444444444) internal successors, (117), 82 states have internal predecessors, (117), 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 25.0) internal successors, (50), 2 states have internal predecessors, (50), 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) [2025-03-17 06:08:12,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:08:12,239 INFO L93 Difference]: Finished difference Result 195 states and 307 transitions. [2025-03-17 06:08:12,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 06:08:12,242 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 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 120 [2025-03-17 06:08:12,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:08:12,247 INFO L225 Difference]: With dead ends: 195 [2025-03-17 06:08:12,248 INFO L226 Difference]: Without dead ends: 97 [2025-03-17 06:08:12,251 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 06:08:12,256 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 06:08:12,258 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 141 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 06:08:12,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2025-03-17 06:08:12,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2025-03-17 06:08:12,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 80 states have (on average 1.4125) internal successors, (113), 80 states have internal predecessors, (113), 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) [2025-03-17 06:08:12,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 143 transitions. [2025-03-17 06:08:12,319 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 143 transitions. Word has length 120 [2025-03-17 06:08:12,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:08:12,319 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 143 transitions. [2025-03-17 06:08:12,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 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) [2025-03-17 06:08:12,321 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 143 transitions. [2025-03-17 06:08:12,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2025-03-17 06:08:12,327 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:08:12,327 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, 1] [2025-03-17 06:08:12,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 06:08:12,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-17 06:08:12,529 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:08:12,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:08:12,530 INFO L85 PathProgramCache]: Analyzing trace with hash 2105613493, now seen corresponding path program 1 times [2025-03-17 06:08:12,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:08:12,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206112625] [2025-03-17 06:08:12,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:08:12,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:08:12,631 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-03-17 06:08:12,762 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-03-17 06:08:12,765 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:08:12,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:08:13,267 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2025-03-17 06:08:13,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:08:13,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206112625] [2025-03-17 06:08:13,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206112625] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:08:13,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:08:13,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 06:08:13,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419474863] [2025-03-17 06:08:13,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:08:13,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 06:08:13,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:08:13,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 06:08:13,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 06:08:13,273 INFO L87 Difference]: Start difference. First operand 97 states and 143 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2025-03-17 06:08:13,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:08:13,355 INFO L93 Difference]: Finished difference Result 196 states and 289 transitions. [2025-03-17 06:08:13,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 06:08:13,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 120 [2025-03-17 06:08:13,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:08:13,362 INFO L225 Difference]: With dead ends: 196 [2025-03-17 06:08:13,362 INFO L226 Difference]: Without dead ends: 100 [2025-03-17 06:08:13,362 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 [2025-03-17 06:08:13,363 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 1 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 06:08:13,363 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 403 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 06:08:13,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2025-03-17 06:08:13,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2025-03-17 06:08:13,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 82 states have (on average 1.4024390243902438) internal successors, (115), 82 states have internal predecessors, (115), 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) [2025-03-17 06:08:13,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 145 transitions. [2025-03-17 06:08:13,391 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 145 transitions. Word has length 120 [2025-03-17 06:08:13,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:08:13,392 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 145 transitions. [2025-03-17 06:08:13,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2025-03-17 06:08:13,392 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 145 transitions. [2025-03-17 06:08:13,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2025-03-17 06:08:13,393 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:08:13,394 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, 1] [2025-03-17 06:08:13,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 06:08:13,394 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:08:13,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:08:13,398 INFO L85 PathProgramCache]: Analyzing trace with hash 298159030, now seen corresponding path program 1 times [2025-03-17 06:08:13,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:08:13,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130713471] [2025-03-17 06:08:13,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:08:13,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:08:13,461 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-03-17 06:08:13,570 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-03-17 06:08:13,571 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:08:13,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:08:13,846 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2025-03-17 06:08:13,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:08:13,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130713471] [2025-03-17 06:08:13,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130713471] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:08:13,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:08:13,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 06:08:13,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542563815] [2025-03-17 06:08:13,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:08:13,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 06:08:13,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:08:13,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 06:08:13,851 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 06:08:13,851 INFO L87 Difference]: Start difference. First operand 99 states and 145 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2025-03-17 06:08:13,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:08:13,916 INFO L93 Difference]: Finished difference Result 200 states and 293 transitions. [2025-03-17 06:08:13,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 06:08:13,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 120 [2025-03-17 06:08:13,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:08:13,919 INFO L225 Difference]: With dead ends: 200 [2025-03-17 06:08:13,922 INFO L226 Difference]: Without dead ends: 102 [2025-03-17 06:08:13,923 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 [2025-03-17 06:08:13,924 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 1 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 06:08:13,924 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 404 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 06:08:13,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2025-03-17 06:08:13,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2025-03-17 06:08:13,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 84 states have (on average 1.3928571428571428) internal successors, (117), 84 states have internal predecessors, (117), 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) [2025-03-17 06:08:13,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 147 transitions. [2025-03-17 06:08:13,943 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 147 transitions. Word has length 120 [2025-03-17 06:08:13,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:08:13,946 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 147 transitions. [2025-03-17 06:08:13,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2025-03-17 06:08:13,946 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 147 transitions. [2025-03-17 06:08:13,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2025-03-17 06:08:13,951 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:08:13,951 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, 1] [2025-03-17 06:08:13,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 06:08:13,951 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:08:13,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:08:13,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1185662711, now seen corresponding path program 1 times [2025-03-17 06:08:13,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:08:13,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660978604] [2025-03-17 06:08:13,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:08:13,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:08:14,014 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-03-17 06:08:14,063 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-03-17 06:08:14,067 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:08:14,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:08:14,352 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2025-03-17 06:08:14,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:08:14,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660978604] [2025-03-17 06:08:14,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660978604] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:08:14,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:08:14,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 06:08:14,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155723559] [2025-03-17 06:08:14,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:08:14,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 06:08:14,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:08:14,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 06:08:14,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 06:08:14,360 INFO L87 Difference]: Start difference. First operand 101 states and 147 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2025-03-17 06:08:14,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:08:14,414 INFO L93 Difference]: Finished difference Result 204 states and 297 transitions. [2025-03-17 06:08:14,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 06:08:14,415 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 120 [2025-03-17 06:08:14,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:08:14,416 INFO L225 Difference]: With dead ends: 204 [2025-03-17 06:08:14,417 INFO L226 Difference]: Without dead ends: 104 [2025-03-17 06:08:14,417 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 [2025-03-17 06:08:14,418 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 1 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 06:08:14,418 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 406 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 06:08:14,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2025-03-17 06:08:14,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2025-03-17 06:08:14,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 86 states have (on average 1.3837209302325582) internal successors, (119), 86 states have internal predecessors, (119), 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) [2025-03-17 06:08:14,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 149 transitions. [2025-03-17 06:08:14,436 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 149 transitions. Word has length 120 [2025-03-17 06:08:14,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:08:14,437 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 149 transitions. [2025-03-17 06:08:14,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2025-03-17 06:08:14,437 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 149 transitions. [2025-03-17 06:08:14,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2025-03-17 06:08:14,438 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:08:14,438 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, 1] [2025-03-17 06:08:14,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 06:08:14,438 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:08:14,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:08:14,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1186586232, now seen corresponding path program 1 times [2025-03-17 06:08:14,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:08:14,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695709721] [2025-03-17 06:08:14,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:08:14,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:08:14,488 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-03-17 06:08:14,768 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-03-17 06:08:14,769 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:08:14,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:08:18,157 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2025-03-17 06:08:18,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:08:18,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695709721] [2025-03-17 06:08:18,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695709721] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:08:18,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:08:18,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-17 06:08:18,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422632606] [2025-03-17 06:08:18,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:08:18,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 06:08:18,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:08:18,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 06:08:18,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2025-03-17 06:08:18,159 INFO L87 Difference]: Start difference. First operand 103 states and 149 transitions. Second operand has 14 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 14 states have internal predecessors, (48), 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) [2025-03-17 06:08:18,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:08:18,923 INFO L93 Difference]: Finished difference Result 206 states and 298 transitions. [2025-03-17 06:08:18,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:08:18,924 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 14 states have internal predecessors, (48), 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 120 [2025-03-17 06:08:18,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:08:18,926 INFO L225 Difference]: With dead ends: 206 [2025-03-17 06:08:18,926 INFO L226 Difference]: Without dead ends: 104 [2025-03-17 06:08:18,927 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2025-03-17 06:08:18,927 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 241 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-17 06:08:18,929 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 289 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-17 06:08:18,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2025-03-17 06:08:18,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2025-03-17 06:08:18,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 86 states have (on average 1.372093023255814) internal successors, (118), 86 states have internal predecessors, (118), 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) [2025-03-17 06:08:18,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 148 transitions. [2025-03-17 06:08:18,946 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 148 transitions. Word has length 120 [2025-03-17 06:08:18,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:08:18,947 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 148 transitions. [2025-03-17 06:08:18,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 14 states have internal predecessors, (48), 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) [2025-03-17 06:08:18,947 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 148 transitions. [2025-03-17 06:08:18,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2025-03-17 06:08:18,950 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:08:18,951 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, 1, 1, 1, 1] [2025-03-17 06:08:18,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 06:08:18,951 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:08:18,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:08:18,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1787674653, now seen corresponding path program 1 times [2025-03-17 06:08:18,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:08:18,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983667678] [2025-03-17 06:08:18,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:08:18,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:08:19,003 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-03-17 06:08:19,218 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-03-17 06:08:19,218 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:08:19,218 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:08:20,261 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 18 proven. 24 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2025-03-17 06:08:20,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:08:20,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983667678] [2025-03-17 06:08:20,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983667678] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:08:20,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950427272] [2025-03-17 06:08:20,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:08:20,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:08:20,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:08:20,269 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:08:20,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 06:08:20,431 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-03-17 06:08:20,518 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-03-17 06:08:20,518 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:08:20,519 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:08:20,524 INFO L256 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-03-17 06:08:20,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:08:21,119 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 [2025-03-17 06:08:21,410 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 23 treesize of output 11 [2025-03-17 06:08:21,609 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 23 treesize of output 11 [2025-03-17 06:08:21,787 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 23 treesize of output 11 [2025-03-17 06:08:21,943 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 23 treesize of output 11 [2025-03-17 06:08:22,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:22,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:22,132 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2025-03-17 06:08:22,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 18 [2025-03-17 06:08:22,143 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2025-03-17 06:08:22,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2025-03-17 06:08:22,148 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 168 proven. 122 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2025-03-17 06:08:22,148 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:08:22,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950427272] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:08:22,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 06:08:22,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2025-03-17 06:08:22,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020996303] [2025-03-17 06:08:22,241 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 06:08:22,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-17 06:08:22,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:08:22,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-17 06:08:22,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2025-03-17 06:08:22,242 INFO L87 Difference]: Start difference. First operand 103 states and 148 transitions. Second operand has 15 states, 13 states have (on average 6.615384615384615) internal successors, (86), 15 states have internal predecessors, (86), 8 states have call successors, (30), 4 states have call predecessors, (30), 6 states have return successors, (30), 6 states have call predecessors, (30), 8 states have call successors, (30) [2025-03-17 06:08:22,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:08:22,983 INFO L93 Difference]: Finished difference Result 226 states and 321 transitions. [2025-03-17 06:08:22,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-17 06:08:22,986 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.615384615384615) internal successors, (86), 15 states have internal predecessors, (86), 8 states have call successors, (30), 4 states have call predecessors, (30), 6 states have return successors, (30), 6 states have call predecessors, (30), 8 states have call successors, (30) Word has length 123 [2025-03-17 06:08:22,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:08:22,987 INFO L225 Difference]: With dead ends: 226 [2025-03-17 06:08:22,987 INFO L226 Difference]: Without dead ends: 124 [2025-03-17 06:08:22,988 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2025-03-17 06:08:22,988 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 213 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-17 06:08:22,988 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 455 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-17 06:08:22,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2025-03-17 06:08:23,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 119. [2025-03-17 06:08:23,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 95 states have (on average 1.3263157894736841) internal successors, (126), 96 states have internal predecessors, (126), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2025-03-17 06:08:23,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 168 transitions. [2025-03-17 06:08:23,019 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 168 transitions. Word has length 123 [2025-03-17 06:08:23,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:08:23,019 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 168 transitions. [2025-03-17 06:08:23,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.615384615384615) internal successors, (86), 15 states have internal predecessors, (86), 8 states have call successors, (30), 4 states have call predecessors, (30), 6 states have return successors, (30), 6 states have call predecessors, (30), 8 states have call successors, (30) [2025-03-17 06:08:23,019 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 168 transitions. [2025-03-17 06:08:23,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2025-03-17 06:08:23,020 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:08:23,020 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, 1, 1, 1, 1] [2025-03-17 06:08:23,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 06:08:23,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-03-17 06:08:23,221 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:08:23,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:08:23,221 INFO L85 PathProgramCache]: Analyzing trace with hash -2042411198, now seen corresponding path program 1 times [2025-03-17 06:08:23,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:08:23,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629674375] [2025-03-17 06:08:23,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:08:23,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:08:23,269 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-03-17 06:08:23,359 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-03-17 06:08:23,359 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:08:23,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:08:24,023 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2025-03-17 06:08:24,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:08:24,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629674375] [2025-03-17 06:08:24,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629674375] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:08:24,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:08:24,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 06:08:24,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544914067] [2025-03-17 06:08:24,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:08:24,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 06:08:24,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:08:24,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 06:08:24,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-17 06:08:24,027 INFO L87 Difference]: Start difference. First operand 119 states and 168 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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) [2025-03-17 06:08:24,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:08:24,492 INFO L93 Difference]: Finished difference Result 225 states and 317 transitions. [2025-03-17 06:08:24,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:08:24,492 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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 123 [2025-03-17 06:08:24,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:08:24,494 INFO L225 Difference]: With dead ends: 225 [2025-03-17 06:08:24,494 INFO L226 Difference]: Without dead ends: 119 [2025-03-17 06:08:24,495 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:08:24,495 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 169 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 06:08:24,496 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 265 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 06:08:24,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2025-03-17 06:08:24,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2025-03-17 06:08:24,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 95 states have (on average 1.3157894736842106) internal successors, (125), 96 states have internal predecessors, (125), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2025-03-17 06:08:24,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 167 transitions. [2025-03-17 06:08:24,518 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 167 transitions. Word has length 123 [2025-03-17 06:08:24,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:08:24,519 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 167 transitions. [2025-03-17 06:08:24,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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) [2025-03-17 06:08:24,519 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 167 transitions. [2025-03-17 06:08:24,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2025-03-17 06:08:24,520 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:08:24,520 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, 1, 1, 1, 1] [2025-03-17 06:08:24,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 06:08:24,520 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:08:24,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:08:24,520 INFO L85 PathProgramCache]: Analyzing trace with hash -534859389, now seen corresponding path program 1 times [2025-03-17 06:08:24,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:08:24,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381283891] [2025-03-17 06:08:24,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:08:24,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:08:24,546 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-03-17 06:08:24,666 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-03-17 06:08:24,666 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:08:24,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:08:32,747 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2025-03-17 06:08:32,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:08:32,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381283891] [2025-03-17 06:08:32,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381283891] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:08:32,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008996125] [2025-03-17 06:08:32,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:08:32,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:08:32,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:08:32,750 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:08:32,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 06:08:32,977 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-03-17 06:08:33,103 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-03-17 06:08:33,103 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:08:33,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:08:33,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 111 conjuncts are in the unsatisfiable core [2025-03-17 06:08:33,131 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:08:35,238 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 [2025-03-17 06:08:36,026 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 23 treesize of output 11 [2025-03-17 06:08:37,403 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 37 treesize of output 24 [2025-03-17 06:08:39,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 39 [2025-03-17 06:08:39,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 39 [2025-03-17 06:08:40,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:40,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:40,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:40,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:40,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 46 [2025-03-17 06:08:40,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 175 treesize of output 123 [2025-03-17 06:08:40,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 135 [2025-03-17 06:08:41,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 102 treesize of output 82 [2025-03-17 06:08:41,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:41,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:41,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:41,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:41,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:41,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:41,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:41,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:41,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:41,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:41,737 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2025-03-17 06:08:41,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 20 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 231 treesize of output 145 [2025-03-17 06:08:42,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:42,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:42,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:42,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:42,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:42,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:42,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:42,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:42,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:42,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:42,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:42,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:42,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:42,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:42,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:42,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:42,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:42,729 INFO L349 Elim1Store]: treesize reduction 117, result has 5.6 percent of original size [2025-03-17 06:08:42,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 27 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 9 case distinctions, treesize of input 242 treesize of output 162 [2025-03-17 06:08:43,381 INFO L349 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2025-03-17 06:08:43,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 325 treesize of output 246 [2025-03-17 06:08:43,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:43,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:43,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:43,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:43,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:43,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:43,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:43,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:43,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:43,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:43,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:43,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:43,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:43,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:43,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:43,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:43,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:43,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:43,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:43,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:43,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:43,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:43,627 INFO L349 Elim1Store]: treesize reduction 204, result has 23.0 percent of original size [2025-03-17 06:08:43,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 11 new quantified variables, introduced 17 case distinctions, treesize of input 244 treesize of output 280 [2025-03-17 06:08:48,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:48,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:48,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:48,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:48,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:48,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:48,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:48,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:48,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:48,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:48,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:48,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:48,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:48,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 06:08:48,156 INFO L349 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2025-03-17 06:08:48,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 1393 treesize of output 1232 [2025-03-17 06:09:40,910 WARN L286 SmtUtils]: Spent 8.72s on a formula simplification that was a NOOP. DAG size: 1683 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2025-03-17 06:09:40,919 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 06:09:40,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 29 select indices, 29 select index equivalence classes, 0 disjoint index pairs (out of 406 index pairs), introduced 29 new quantified variables, introduced 406 case distinctions, treesize of input 5728 treesize of output 7524