./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-79.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-79.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 1d35048482bec5585a23759f57e0e5f27fb64289f87c796a48314ffe6a1f4ee7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 17:06:38,380 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 17:06:38,441 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 17:06:38,446 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 17:06:38,446 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 17:06:38,465 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 17:06:38,465 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 17:06:38,466 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 17:06:38,466 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 17:06:38,466 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 17:06:38,466 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 17:06:38,466 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 17:06:38,466 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 17:06:38,467 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 17:06:38,467 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 17:06:38,467 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 17:06:38,467 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 17:06:38,467 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 17:06:38,467 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 17:06:38,467 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 17:06:38,468 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 17:06:38,468 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 17:06:38,468 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 17:06:38,468 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 17:06:38,468 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 17:06:38,468 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 17:06:38,468 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 17:06:38,468 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 17:06:38,469 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 17:06:38,469 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 17:06:38,469 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 17:06:38,469 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 17:06:38,469 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:06:38,469 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 17:06:38,469 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 17:06:38,469 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 17:06:38,470 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 17:06:38,470 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 17:06:38,470 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 17:06:38,470 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 17:06:38,470 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 17:06:38,470 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 17:06:38,470 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 17:06:38,470 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 -> 1d35048482bec5585a23759f57e0e5f27fb64289f87c796a48314ffe6a1f4ee7 [2025-03-08 17:06:38,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 17:06:38,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 17:06:38,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 17:06:38,740 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 17:06:38,740 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 17:06:38,741 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-79.i [2025-03-08 17:06:39,958 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/021728b19/18698fbfbcb8498d9868bf98b4083dcc/FLAG0f97b1e6c [2025-03-08 17:06:40,232 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 17:06:40,233 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-79.i [2025-03-08 17:06:40,241 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/021728b19/18698fbfbcb8498d9868bf98b4083dcc/FLAG0f97b1e6c [2025-03-08 17:06:40,256 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/021728b19/18698fbfbcb8498d9868bf98b4083dcc [2025-03-08 17:06:40,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 17:06:40,260 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 17:06:40,261 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 17:06:40,261 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 17:06:40,264 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 17:06:40,265 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:06:40" (1/1) ... [2025-03-08 17:06:40,266 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27070cee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:06:40, skipping insertion in model container [2025-03-08 17:06:40,266 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:06:40" (1/1) ... [2025-03-08 17:06:40,279 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 17:06:40,385 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-79.i[917,930] [2025-03-08 17:06:40,441 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:06:40,450 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 17:06:40,461 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-79.i[917,930] [2025-03-08 17:06:40,498 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:06:40,519 INFO L204 MainTranslator]: Completed translation [2025-03-08 17:06:40,520 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:06:40 WrapperNode [2025-03-08 17:06:40,520 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 17:06:40,521 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 17:06:40,521 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 17:06:40,521 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 17:06:40,527 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:06:40" (1/1) ... [2025-03-08 17:06:40,537 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:06:40" (1/1) ... [2025-03-08 17:06:40,571 INFO L138 Inliner]: procedures = 30, calls = 126, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 413 [2025-03-08 17:06:40,571 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 17:06:40,572 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 17:06:40,572 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 17:06:40,572 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 17:06:40,580 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:06:40" (1/1) ... [2025-03-08 17:06:40,580 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:06:40" (1/1) ... [2025-03-08 17:06:40,586 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:06:40" (1/1) ... [2025-03-08 17:06:40,598 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2025-03-08 17:06:40,600 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:06:40" (1/1) ... [2025-03-08 17:06:40,600 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:06:40" (1/1) ... [2025-03-08 17:06:40,609 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:06:40" (1/1) ... [2025-03-08 17:06:40,611 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:06:40" (1/1) ... [2025-03-08 17:06:40,613 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:06:40" (1/1) ... [2025-03-08 17:06:40,618 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:06:40" (1/1) ... [2025-03-08 17:06:40,620 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 17:06:40,622 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 17:06:40,622 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 17:06:40,623 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 17:06:40,624 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:06:40" (1/1) ... [2025-03-08 17:06:40,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:06:40,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:06:40,655 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 17:06:40,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 17:06:40,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 17:06:40,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2025-03-08 17:06:40,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2025-03-08 17:06:40,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-03-08 17:06:40,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2025-03-08 17:06:40,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2025-03-08 17:06:40,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-03-08 17:06:40,684 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 17:06:40,684 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 17:06:40,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-08 17:06:40,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 17:06:40,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 17:06:40,776 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 17:06:40,778 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 17:06:41,148 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L115: havoc property_#t~mem67#1;havoc property_#t~ite77#1;havoc property_#t~mem68#1;havoc property_#t~ite76#1;havoc property_#t~mem70#1;havoc property_#t~mem69#1;havoc property_#t~mem75#1;havoc property_#t~mem74#1;havoc property_#t~mem71#1;havoc property_#t~ite73#1;havoc property_#t~mem72#1;havoc property_#t~mem78#1;havoc property_#t~ite80#1;havoc property_#t~mem79#1;havoc property_#t~mem83#1;havoc property_#t~mem81#1;havoc property_#t~bitwise82#1;havoc property_#t~ite93#1;havoc property_#t~mem84#1;havoc property_#t~mem85#1;havoc property_#t~ite90#1;havoc property_#t~mem87#1;havoc property_#t~mem86#1;havoc property_#t~mem89#1;havoc property_#t~mem88#1;havoc property_#t~mem92#1;havoc property_#t~mem91#1;havoc property_#t~short94#1;havoc property_#t~mem95#1;havoc property_#t~mem96#1;havoc property_#t~ite105#1;havoc property_#t~mem97#1;havoc property_#t~mem98#1;havoc property_#t~mem99#1;havoc property_#t~ite104#1;havoc property_#t~mem101#1;havoc property_#t~mem100#1;havoc property_#t~mem103#1;havoc property_#t~mem102#1;havoc property_#t~short106#1;havoc property_#t~mem108#1;havoc property_#t~mem107#1;havoc property_#t~short109#1; [2025-03-08 17:06:41,183 INFO L? ?]: Removed 100 outVars from TransFormulas that were not future-live. [2025-03-08 17:06:41,183 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 17:06:41,196 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 17:06:41,196 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 17:06:41,196 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:06:41 BoogieIcfgContainer [2025-03-08 17:06:41,196 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 17:06:41,198 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 17:06:41,198 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 17:06:41,202 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 17:06:41,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 05:06:40" (1/3) ... [2025-03-08 17:06:41,202 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79381c82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:06:41, skipping insertion in model container [2025-03-08 17:06:41,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:06:40" (2/3) ... [2025-03-08 17:06:41,203 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79381c82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:06:41, skipping insertion in model container [2025-03-08 17:06:41,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:06:41" (3/3) ... [2025-03-08 17:06:41,204 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-79.i [2025-03-08 17:06:41,216 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 17:06:41,217 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-sp_file-79.i that has 2 procedures, 94 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 17:06:41,271 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 17:06:41,281 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;@6a48caa3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 17:06:41,282 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 17:06:41,285 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 80 states have (on average 1.425) internal successors, (114), 81 states have internal predecessors, (114), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-03-08 17:06:41,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2025-03-08 17:06:41,294 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:06:41,295 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:06:41,295 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:06:41,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:06:41,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1971520126, now seen corresponding path program 1 times [2025-03-08 17:06:41,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:06:41,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938135512] [2025-03-08 17:06:41,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:06:41,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:06:41,401 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-03-08 17:06:41,491 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-03-08 17:06:41,491 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:06:41,492 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:06:41,896 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2025-03-08 17:06:41,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:06:41,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938135512] [2025-03-08 17:06:41,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938135512] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:06:41,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234019860] [2025-03-08 17:06:41,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:06:41,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:06:41,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:06:41,905 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:06:41,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 17:06:42,016 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-03-08 17:06:42,086 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-03-08 17:06:42,087 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:06:42,087 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:06:42,090 INFO L256 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 17:06:42,098 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:06:42,144 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2025-03-08 17:06:42,145 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 17:06:42,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234019860] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:06:42,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 17:06:42,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-08 17:06:42,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50069098] [2025-03-08 17:06:42,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:06:42,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:06:42,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:06:42,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:06:42,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-08 17:06:42,173 INFO L87 Difference]: Start difference. First operand has 94 states, 80 states have (on average 1.425) internal successors, (114), 81 states have internal predecessors, (114), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2025-03-08 17:06:42,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 17:06:42,222 INFO L93 Difference]: Finished difference Result 185 states and 282 transitions. [2025-03-08 17:06:42,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 17:06:42,224 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 101 [2025-03-08 17:06:42,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 17:06:42,230 INFO L225 Difference]: With dead ends: 185 [2025-03-08 17:06:42,230 INFO L226 Difference]: Without dead ends: 94 [2025-03-08 17:06:42,234 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-08 17:06:42,236 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 1 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 17:06:42,236 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 369 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 17:06:42,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2025-03-08 17:06:42,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2025-03-08 17:06:42,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 80 states have (on average 1.3875) internal successors, (111), 80 states have internal predecessors, (111), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-03-08 17:06:42,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 133 transitions. [2025-03-08 17:06:42,273 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 133 transitions. Word has length 101 [2025-03-08 17:06:42,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 17:06:42,275 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 133 transitions. [2025-03-08 17:06:42,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2025-03-08 17:06:42,275 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 133 transitions. [2025-03-08 17:06:42,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2025-03-08 17:06:42,279 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:06:42,280 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:06:42,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-08 17:06:42,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-08 17:06:42,481 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:06:42,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:06:42,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1970596605, now seen corresponding path program 1 times [2025-03-08 17:06:42,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:06:42,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742886085] [2025-03-08 17:06:42,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:06:42,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:06:42,513 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-03-08 17:06:42,531 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-03-08 17:06:42,532 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:06:42,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:06:42,716 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2025-03-08 17:06:42,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:06:42,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742886085] [2025-03-08 17:06:42,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742886085] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:06:42,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563155650] [2025-03-08 17:06:42,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:06:42,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:06:42,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:06:42,721 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:06:42,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 17:06:42,825 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-03-08 17:06:42,873 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-03-08 17:06:42,873 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:06:42,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:06:42,876 INFO L256 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 17:06:42,878 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:06:42,910 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2025-03-08 17:06:42,912 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 17:06:42,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563155650] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:06:42,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 17:06:42,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2025-03-08 17:06:42,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371734449] [2025-03-08 17:06:42,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:06:42,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:06:42,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:06:42,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:06:42,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-08 17:06:42,914 INFO L87 Difference]: Start difference. First operand 93 states and 133 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2025-03-08 17:06:42,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 17:06:42,950 INFO L93 Difference]: Finished difference Result 185 states and 266 transitions. [2025-03-08 17:06:42,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 17:06:42,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 101 [2025-03-08 17:06:42,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 17:06:42,951 INFO L225 Difference]: With dead ends: 185 [2025-03-08 17:06:42,951 INFO L226 Difference]: Without dead ends: 95 [2025-03-08 17:06:42,952 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-08 17:06:42,952 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 0 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 17:06:42,952 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 370 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 17:06:42,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2025-03-08 17:06:42,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2025-03-08 17:06:42,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 82 states have (on average 1.3780487804878048) internal successors, (113), 82 states have internal predecessors, (113), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-03-08 17:06:42,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 135 transitions. [2025-03-08 17:06:42,964 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 135 transitions. Word has length 101 [2025-03-08 17:06:42,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 17:06:42,966 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 135 transitions. [2025-03-08 17:06:42,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2025-03-08 17:06:42,966 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 135 transitions. [2025-03-08 17:06:42,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2025-03-08 17:06:42,972 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:06:42,972 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:06:42,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 17:06:43,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2025-03-08 17:06:43,177 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:06:43,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:06:43,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1879803521, now seen corresponding path program 1 times [2025-03-08 17:06:43,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:06:43,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055701208] [2025-03-08 17:06:43,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:06:43,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:06:43,206 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 103 statements into 1 equivalence classes. [2025-03-08 17:06:43,273 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 103 of 103 statements. [2025-03-08 17:06:43,273 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:06:43,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:06:43,512 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2025-03-08 17:06:43,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:06:43,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055701208] [2025-03-08 17:06:43,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055701208] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:06:43,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:06:43,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:06:43,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792997161] [2025-03-08 17:06:43,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:06:43,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:06:43,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:06:43,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:06:43,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:06:43,513 INFO L87 Difference]: Start difference. First operand 95 states and 135 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2025-03-08 17:06:43,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 17:06:43,703 INFO L93 Difference]: Finished difference Result 217 states and 306 transitions. [2025-03-08 17:06:43,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 17:06:43,705 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 103 [2025-03-08 17:06:43,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 17:06:43,706 INFO L225 Difference]: With dead ends: 217 [2025-03-08 17:06:43,706 INFO L226 Difference]: Without dead ends: 125 [2025-03-08 17:06:43,707 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:06:43,707 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 35 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 17:06:43,707 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 442 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 17:06:43,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2025-03-08 17:06:43,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 97. [2025-03-08 17:06:43,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 84 states have (on average 1.369047619047619) internal successors, (115), 84 states have internal predecessors, (115), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-03-08 17:06:43,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 137 transitions. [2025-03-08 17:06:43,718 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 137 transitions. Word has length 103 [2025-03-08 17:06:43,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 17:06:43,718 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 137 transitions. [2025-03-08 17:06:43,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2025-03-08 17:06:43,719 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 137 transitions. [2025-03-08 17:06:43,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-03-08 17:06:43,719 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:06:43,719 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:06:43,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 17:06:43,723 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:06:43,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:06:43,723 INFO L85 PathProgramCache]: Analyzing trace with hash -943634594, now seen corresponding path program 1 times [2025-03-08 17:06:43,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:06:43,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809758834] [2025-03-08 17:06:43,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:06:43,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:06:43,746 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-03-08 17:06:43,819 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-03-08 17:06:43,819 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:06:43,820 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:06:45,962 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2025-03-08 17:06:45,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:06:45,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809758834] [2025-03-08 17:06:45,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809758834] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:06:45,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:06:45,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-08 17:06:45,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853214797] [2025-03-08 17:06:45,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:06:45,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-08 17:06:45,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:06:45,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-08 17:06:45,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2025-03-08 17:06:45,966 INFO L87 Difference]: Start difference. First operand 97 states and 137 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 2 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-08 17:06:47,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 17:06:47,005 INFO L93 Difference]: Finished difference Result 373 states and 525 transitions. [2025-03-08 17:06:47,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-08 17:06:47,006 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 2 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 104 [2025-03-08 17:06:47,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 17:06:47,008 INFO L225 Difference]: With dead ends: 373 [2025-03-08 17:06:47,008 INFO L226 Difference]: Without dead ends: 279 [2025-03-08 17:06:47,009 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2025-03-08 17:06:47,010 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 694 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 17:06:47,010 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 725 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 17:06:47,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2025-03-08 17:06:47,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 155. [2025-03-08 17:06:47,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 130 states have (on average 1.376923076923077) internal successors, (179), 130 states have internal predecessors, (179), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-08 17:06:47,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 223 transitions. [2025-03-08 17:06:47,031 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 223 transitions. Word has length 104 [2025-03-08 17:06:47,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 17:06:47,031 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 223 transitions. [2025-03-08 17:06:47,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 2 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-08 17:06:47,032 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 223 transitions. [2025-03-08 17:06:47,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2025-03-08 17:06:47,032 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:06:47,033 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:06:47,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 17:06:47,033 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:06:47,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:06:47,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1214910907, now seen corresponding path program 1 times [2025-03-08 17:06:47,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:06:47,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84549819] [2025-03-08 17:06:47,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:06:47,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:06:47,054 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-03-08 17:06:47,072 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-03-08 17:06:47,072 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:06:47,072 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:06:47,448 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2025-03-08 17:06:47,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:06:47,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84549819] [2025-03-08 17:06:47,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84549819] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:06:47,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:06:47,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 17:06:47,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031619964] [2025-03-08 17:06:47,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:06:47,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 17:06:47,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:06:47,450 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 17:06:47,450 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-08 17:06:47,450 INFO L87 Difference]: Start difference. First operand 155 states and 223 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2025-03-08 17:06:47,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 17:06:47,811 INFO L93 Difference]: Finished difference Result 273 states and 393 transitions. [2025-03-08 17:06:47,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 17:06:47,814 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 105 [2025-03-08 17:06:47,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 17:06:47,815 INFO L225 Difference]: With dead ends: 273 [2025-03-08 17:06:47,815 INFO L226 Difference]: Without dead ends: 179 [2025-03-08 17:06:47,816 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2025-03-08 17:06:47,816 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 111 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 17:06:47,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 453 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 17:06:47,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2025-03-08 17:06:47,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 169. [2025-03-08 17:06:47,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 144 states have (on average 1.3958333333333333) internal successors, (201), 144 states have internal predecessors, (201), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-08 17:06:47,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 245 transitions. [2025-03-08 17:06:47,830 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 245 transitions. Word has length 105 [2025-03-08 17:06:47,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 17:06:47,833 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 245 transitions. [2025-03-08 17:06:47,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2025-03-08 17:06:47,834 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 245 transitions. [2025-03-08 17:06:47,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2025-03-08 17:06:47,834 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:06:47,834 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:06:47,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 17:06:47,835 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:06:47,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:06:47,835 INFO L85 PathProgramCache]: Analyzing trace with hash 217838554, now seen corresponding path program 1 times [2025-03-08 17:06:47,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:06:47,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254627378] [2025-03-08 17:06:47,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:06:47,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:06:47,853 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-03-08 17:06:47,912 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-03-08 17:06:47,913 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:06:47,913 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:06:48,417 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2025-03-08 17:06:48,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:06:48,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254627378] [2025-03-08 17:06:48,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254627378] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:06:48,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:06:48,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 17:06:48,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137187984] [2025-03-08 17:06:48,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:06:48,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 17:06:48,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:06:48,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 17:06:48,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 17:06:48,420 INFO L87 Difference]: Start difference. First operand 169 states and 245 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2025-03-08 17:06:48,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 17:06:48,756 INFO L93 Difference]: Finished difference Result 310 states and 443 transitions. [2025-03-08 17:06:48,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 17:06:48,756 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 105 [2025-03-08 17:06:48,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 17:06:48,758 INFO L225 Difference]: With dead ends: 310 [2025-03-08 17:06:48,758 INFO L226 Difference]: Without dead ends: 208 [2025-03-08 17:06:48,758 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2025-03-08 17:06:48,759 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 160 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 17:06:48,759 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 530 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 17:06:48,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2025-03-08 17:06:48,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 109. [2025-03-08 17:06:48,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 96 states have (on average 1.3854166666666667) internal successors, (133), 96 states have internal predecessors, (133), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-03-08 17:06:48,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 155 transitions. [2025-03-08 17:06:48,768 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 155 transitions. Word has length 105 [2025-03-08 17:06:48,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 17:06:48,769 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 155 transitions. [2025-03-08 17:06:48,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2025-03-08 17:06:48,769 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 155 transitions. [2025-03-08 17:06:48,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-03-08 17:06:48,770 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:06:48,770 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:06:48,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 17:06:48,770 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:06:48,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:06:48,770 INFO L85 PathProgramCache]: Analyzing trace with hash -2118945797, now seen corresponding path program 1 times [2025-03-08 17:06:48,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:06:48,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578826413] [2025-03-08 17:06:48,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:06:48,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:06:48,794 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-03-08 17:06:48,812 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-03-08 17:06:48,813 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:06:48,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:06:49,514 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2025-03-08 17:06:49,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:06:49,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578826413] [2025-03-08 17:06:49,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578826413] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:06:49,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:06:49,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-08 17:06:49,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410631256] [2025-03-08 17:06:49,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:06:49,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 17:06:49,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:06:49,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 17:06:49,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-03-08 17:06:49,516 INFO L87 Difference]: Start difference. First operand 109 states and 155 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2025-03-08 17:06:50,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 17:06:50,106 INFO L93 Difference]: Finished difference Result 372 states and 529 transitions. [2025-03-08 17:06:50,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 17:06:50,107 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 106 [2025-03-08 17:06:50,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 17:06:50,108 INFO L225 Difference]: With dead ends: 372 [2025-03-08 17:06:50,108 INFO L226 Difference]: Without dead ends: 266 [2025-03-08 17:06:50,109 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2025-03-08 17:06:50,109 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 303 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 17:06:50,109 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 528 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 17:06:50,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2025-03-08 17:06:50,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 177. [2025-03-08 17:06:50,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 152 states have (on average 1.394736842105263) internal successors, (212), 152 states have internal predecessors, (212), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-08 17:06:50,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 256 transitions. [2025-03-08 17:06:50,141 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 256 transitions. Word has length 106 [2025-03-08 17:06:50,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 17:06:50,141 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 256 transitions. [2025-03-08 17:06:50,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2025-03-08 17:06:50,141 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 256 transitions. [2025-03-08 17:06:50,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-03-08 17:06:50,142 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:06:50,142 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:06:50,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 17:06:50,142 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:06:50,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:06:50,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1882618492, now seen corresponding path program 1 times [2025-03-08 17:06:50,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:06:50,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410299107] [2025-03-08 17:06:50,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:06:50,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:06:50,162 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-03-08 17:06:50,188 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-03-08 17:06:50,188 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:06:50,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:06:50,288 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2025-03-08 17:06:50,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:06:50,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410299107] [2025-03-08 17:06:50,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410299107] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:06:50,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:06:50,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:06:50,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839002691] [2025-03-08 17:06:50,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:06:50,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:06:50,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:06:50,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:06:50,291 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:06:50,291 INFO L87 Difference]: Start difference. First operand 177 states and 256 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2025-03-08 17:06:50,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 17:06:50,383 INFO L93 Difference]: Finished difference Result 281 states and 405 transitions. [2025-03-08 17:06:50,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 17:06:50,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 106 [2025-03-08 17:06:50,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 17:06:50,384 INFO L225 Difference]: With dead ends: 281 [2025-03-08 17:06:50,384 INFO L226 Difference]: Without dead ends: 174 [2025-03-08 17:06:50,385 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:06:50,385 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 0 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 17:06:50,386 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 321 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 17:06:50,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2025-03-08 17:06:50,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 107. [2025-03-08 17:06:50,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 94 states have (on average 1.3617021276595744) internal successors, (128), 94 states have internal predecessors, (128), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-03-08 17:06:50,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 150 transitions. [2025-03-08 17:06:50,396 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 150 transitions. Word has length 106 [2025-03-08 17:06:50,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 17:06:50,396 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 150 transitions. [2025-03-08 17:06:50,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2025-03-08 17:06:50,397 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 150 transitions. [2025-03-08 17:06:50,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-03-08 17:06:50,398 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:06:50,398 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:06:50,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 17:06:50,398 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:06:50,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:06:50,398 INFO L85 PathProgramCache]: Analyzing trace with hash 971962785, now seen corresponding path program 1 times [2025-03-08 17:06:50,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:06:50,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937772366] [2025-03-08 17:06:50,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:06:50,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:06:50,418 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-03-08 17:06:50,432 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-03-08 17:06:50,432 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:06:50,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:06:50,849 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2025-03-08 17:06:50,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:06:50,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937772366] [2025-03-08 17:06:50,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937772366] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:06:50,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:06:50,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 17:06:50,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206840363] [2025-03-08 17:06:50,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:06:50,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 17:06:50,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:06:50,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 17:06:50,851 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2025-03-08 17:06:50,851 INFO L87 Difference]: Start difference. First operand 107 states and 150 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2025-03-08 17:06:51,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 17:06:51,357 INFO L93 Difference]: Finished difference Result 354 states and 496 transitions. [2025-03-08 17:06:51,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 17:06:51,357 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 106 [2025-03-08 17:06:51,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 17:06:51,359 INFO L225 Difference]: With dead ends: 354 [2025-03-08 17:06:51,359 INFO L226 Difference]: Without dead ends: 250 [2025-03-08 17:06:51,360 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2025-03-08 17:06:51,361 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 257 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 17:06:51,361 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 530 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 17:06:51,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2025-03-08 17:06:51,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 167. [2025-03-08 17:06:51,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 142 states have (on average 1.3661971830985915) internal successors, (194), 142 states have internal predecessors, (194), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-08 17:06:51,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 238 transitions. [2025-03-08 17:06:51,378 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 238 transitions. Word has length 106 [2025-03-08 17:06:51,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 17:06:51,379 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 238 transitions. [2025-03-08 17:06:51,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2025-03-08 17:06:51,379 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 238 transitions. [2025-03-08 17:06:51,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-03-08 17:06:51,380 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:06:51,380 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:06:51,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 17:06:51,380 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:06:51,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:06:51,380 INFO L85 PathProgramCache]: Analyzing trace with hash 461428608, now seen corresponding path program 1 times [2025-03-08 17:06:51,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:06:51,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151665057] [2025-03-08 17:06:51,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:06:51,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:06:51,398 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-03-08 17:06:51,420 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-03-08 17:06:51,421 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:06:51,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:06:51,491 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2025-03-08 17:06:51,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:06:51,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151665057] [2025-03-08 17:06:51,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151665057] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:06:51,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:06:51,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:06:51,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555084443] [2025-03-08 17:06:51,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:06:51,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:06:51,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:06:51,493 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:06:51,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:06:51,494 INFO L87 Difference]: Start difference. First operand 167 states and 238 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2025-03-08 17:06:51,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 17:06:51,573 INFO L93 Difference]: Finished difference Result 263 states and 374 transitions. [2025-03-08 17:06:51,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 17:06:51,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 106 [2025-03-08 17:06:51,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 17:06:51,575 INFO L225 Difference]: With dead ends: 263 [2025-03-08 17:06:51,575 INFO L226 Difference]: Without dead ends: 158 [2025-03-08 17:06:51,575 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:06:51,575 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 0 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 17:06:51,575 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 312 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 17:06:51,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2025-03-08 17:06:51,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 99. [2025-03-08 17:06:51,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 86 states have (on average 1.3488372093023255) internal successors, (116), 86 states have internal predecessors, (116), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-03-08 17:06:51,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 138 transitions. [2025-03-08 17:06:51,586 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 138 transitions. Word has length 106 [2025-03-08 17:06:51,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 17:06:51,586 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 138 transitions. [2025-03-08 17:06:51,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2025-03-08 17:06:51,587 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 138 transitions. [2025-03-08 17:06:51,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-03-08 17:06:51,589 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:06:51,589 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:06:51,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 17:06:51,589 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:06:51,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:06:51,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1726647725, now seen corresponding path program 1 times [2025-03-08 17:06:51,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:06:51,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938544275] [2025-03-08 17:06:51,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:06:51,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:06:51,609 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-03-08 17:06:51,617 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-03-08 17:06:51,617 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:06:51,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:06:51,938 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2025-03-08 17:06:51,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:06:51,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938544275] [2025-03-08 17:06:51,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938544275] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:06:51,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:06:51,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 17:06:51,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520956141] [2025-03-08 17:06:51,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:06:51,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 17:06:51,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:06:51,939 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 17:06:51,939 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-03-08 17:06:51,940 INFO L87 Difference]: Start difference. First operand 99 states and 138 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 2 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-08 17:06:52,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 17:06:52,301 INFO L93 Difference]: Finished difference Result 234 states and 324 transitions. [2025-03-08 17:06:52,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 17:06:52,301 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 2 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 106 [2025-03-08 17:06:52,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 17:06:52,302 INFO L225 Difference]: With dead ends: 234 [2025-03-08 17:06:52,302 INFO L226 Difference]: Without dead ends: 138 [2025-03-08 17:06:52,303 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2025-03-08 17:06:52,303 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 204 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 17:06:52,304 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 405 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 17:06:52,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2025-03-08 17:06:52,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 116. [2025-03-08 17:06:52,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 103 states have (on average 1.3495145631067962) internal successors, (139), 103 states have internal predecessors, (139), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-03-08 17:06:52,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 161 transitions. [2025-03-08 17:06:52,313 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 161 transitions. Word has length 106 [2025-03-08 17:06:52,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 17:06:52,313 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 161 transitions. [2025-03-08 17:06:52,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 2 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-08 17:06:52,313 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 161 transitions. [2025-03-08 17:06:52,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-03-08 17:06:52,314 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:06:52,314 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:06:52,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 17:06:52,314 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:06:52,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:06:52,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1828045895, now seen corresponding path program 1 times [2025-03-08 17:06:52,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:06:52,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302659763] [2025-03-08 17:06:52,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:06:52,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:06:52,333 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-03-08 17:06:52,353 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-03-08 17:06:52,353 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:06:52,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:06:52,666 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2025-03-08 17:06:52,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:06:52,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302659763] [2025-03-08 17:06:52,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302659763] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:06:52,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:06:52,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 17:06:52,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109191006] [2025-03-08 17:06:52,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:06:52,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 17:06:52,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:06:52,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 17:06:52,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-08 17:06:52,668 INFO L87 Difference]: Start difference. First operand 116 states and 161 transitions. Second operand has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 10 states have internal predecessors, (58), 3 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-08 17:06:53,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 17:06:53,203 INFO L93 Difference]: Finished difference Result 275 states and 384 transitions. [2025-03-08 17:06:53,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 17:06:53,203 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 10 states have internal predecessors, (58), 3 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 107 [2025-03-08 17:06:53,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 17:06:53,205 INFO L225 Difference]: With dead ends: 275 [2025-03-08 17:06:53,206 INFO L226 Difference]: Without dead ends: 162 [2025-03-08 17:06:53,206 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2025-03-08 17:06:53,207 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 197 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 17:06:53,207 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 377 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 17:06:53,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2025-03-08 17:06:53,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 156. [2025-03-08 17:06:53,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 133 states have (on average 1.3383458646616542) internal successors, (178), 134 states have internal predecessors, (178), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-08 17:06:53,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 218 transitions. [2025-03-08 17:06:53,230 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 218 transitions. Word has length 107 [2025-03-08 17:06:53,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 17:06:53,230 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 218 transitions. [2025-03-08 17:06:53,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 10 states have internal predecessors, (58), 3 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-08 17:06:53,231 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 218 transitions. [2025-03-08 17:06:53,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-03-08 17:06:53,231 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:06:53,232 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:06:53,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 17:06:53,232 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:06:53,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:06:53,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1321288624, now seen corresponding path program 1 times [2025-03-08 17:06:53,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:06:53,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413939871] [2025-03-08 17:06:53,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:06:53,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:06:53,249 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-03-08 17:06:53,263 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-03-08 17:06:53,263 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:06:53,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:06:53,733 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2025-03-08 17:06:53,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:06:53,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413939871] [2025-03-08 17:06:53,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413939871] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:06:53,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:06:53,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 17:06:53,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6120713] [2025-03-08 17:06:53,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:06:53,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 17:06:53,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:06:53,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 17:06:53,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-08 17:06:53,734 INFO L87 Difference]: Start difference. First operand 156 states and 218 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2025-03-08 17:06:54,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 17:06:54,098 INFO L93 Difference]: Finished difference Result 309 states and 426 transitions. [2025-03-08 17:06:54,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 17:06:54,099 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 107 [2025-03-08 17:06:54,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 17:06:54,100 INFO L225 Difference]: With dead ends: 309 [2025-03-08 17:06:54,101 INFO L226 Difference]: Without dead ends: 194 [2025-03-08 17:06:54,101 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2025-03-08 17:06:54,101 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 205 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 17:06:54,101 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 503 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 17:06:54,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2025-03-08 17:06:54,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 163. [2025-03-08 17:06:54,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 140 states have (on average 1.3285714285714285) internal successors, (186), 141 states have internal predecessors, (186), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-08 17:06:54,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 226 transitions. [2025-03-08 17:06:54,115 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 226 transitions. Word has length 107 [2025-03-08 17:06:54,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 17:06:54,115 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 226 transitions. [2025-03-08 17:06:54,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2025-03-08 17:06:54,116 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 226 transitions. [2025-03-08 17:06:54,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2025-03-08 17:06:54,116 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:06:54,116 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:06:54,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 17:06:54,117 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:06:54,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:06:54,117 INFO L85 PathProgramCache]: Analyzing trace with hash 468046192, now seen corresponding path program 1 times [2025-03-08 17:06:54,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:06:54,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177815] [2025-03-08 17:06:54,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:06:54,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:06:54,140 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 108 statements into 1 equivalence classes. [2025-03-08 17:06:54,160 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 108 of 108 statements. [2025-03-08 17:06:54,162 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:06:54,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:06:54,962 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2025-03-08 17:06:54,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:06:54,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177815] [2025-03-08 17:06:54,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177815] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:06:54,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626700938] [2025-03-08 17:06:54,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:06:54,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:06:54,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:06:54,965 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) [2025-03-08 17:06:54,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 17:06:55,098 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 108 statements into 1 equivalence classes. [2025-03-08 17:06:55,148 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 108 of 108 statements. [2025-03-08 17:06:55,149 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:06:55,149 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:06:55,151 INFO L256 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-03-08 17:06:55,158 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:06:56,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-08 17:06:56,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 17:06:56,340 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2025-03-08 17:06:56,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 27 [2025-03-08 17:06:56,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 17:06:56,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 17:06:56,455 INFO L349 Elim1Store]: treesize reduction 45, result has 25.0 percent of original size [2025-03-08 17:06:56,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 38 [2025-03-08 17:06:56,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2025-03-08 17:06:56,526 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2025-03-08 17:06:56,526 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:07:06,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626700938] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:07:06,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-08 17:07:06,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 23 [2025-03-08 17:07:06,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857675988] [2025-03-08 17:07:06,686 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-08 17:07:06,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-08 17:07:06,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:07:06,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-08 17:07:06,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=624, Unknown=2, NotChecked=0, Total=702 [2025-03-08 17:07:06,688 INFO L87 Difference]: Start difference. First operand 163 states and 226 transitions. Second operand has 23 states, 21 states have (on average 4.809523809523809) internal successors, (101), 22 states have internal predecessors, (101), 6 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (22), 5 states have call predecessors, (22), 6 states have call successors, (22) [2025-03-08 17:07:09,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 17:07:09,635 INFO L93 Difference]: Finished difference Result 382 states and 520 transitions. [2025-03-08 17:07:09,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-03-08 17:07:09,637 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 4.809523809523809) internal successors, (101), 22 states have internal predecessors, (101), 6 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (22), 5 states have call predecessors, (22), 6 states have call successors, (22) Word has length 108 [2025-03-08 17:07:09,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 17:07:09,639 INFO L225 Difference]: With dead ends: 382 [2025-03-08 17:07:09,639 INFO L226 Difference]: Without dead ends: 260 [2025-03-08 17:07:09,640 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 864 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=660, Invalid=2998, Unknown=2, NotChecked=0, Total=3660 [2025-03-08 17:07:09,641 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 467 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 1495 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 1642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-08 17:07:09,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 813 Invalid, 1642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1495 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-08 17:07:09,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2025-03-08 17:07:09,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 178. [2025-03-08 17:07:09,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 151 states have (on average 1.3245033112582782) internal successors, (200), 151 states have internal predecessors, (200), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-08 17:07:09,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 244 transitions. [2025-03-08 17:07:09,665 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 244 transitions. Word has length 108 [2025-03-08 17:07:09,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 17:07:09,665 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 244 transitions. [2025-03-08 17:07:09,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 4.809523809523809) internal successors, (101), 22 states have internal predecessors, (101), 6 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (22), 5 states have call predecessors, (22), 6 states have call successors, (22) [2025-03-08 17:07:09,666 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 244 transitions. [2025-03-08 17:07:09,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2025-03-08 17:07:09,667 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:07:09,667 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:07:09,674 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-08 17:07:09,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:07:09,868 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:07:09,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:07:09,868 INFO L85 PathProgramCache]: Analyzing trace with hash 169664598, now seen corresponding path program 1 times [2025-03-08 17:07:09,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:07:09,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74085980] [2025-03-08 17:07:09,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:07:09,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:07:09,890 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 108 statements into 1 equivalence classes. [2025-03-08 17:07:09,905 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 108 of 108 statements. [2025-03-08 17:07:09,906 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:07:09,906 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:07:10,155 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2025-03-08 17:07:10,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:07:10,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74085980] [2025-03-08 17:07:10,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74085980] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:07:10,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:07:10,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 17:07:10,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541280233] [2025-03-08 17:07:10,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:07:10,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 17:07:10,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:07:10,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 17:07:10,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-08 17:07:10,157 INFO L87 Difference]: Start difference. First operand 178 states and 244 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2025-03-08 17:07:10,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 17:07:10,365 INFO L93 Difference]: Finished difference Result 292 states and 402 transitions. [2025-03-08 17:07:10,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 17:07:10,365 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 108 [2025-03-08 17:07:10,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 17:07:10,366 INFO L225 Difference]: With dead ends: 292 [2025-03-08 17:07:10,366 INFO L226 Difference]: Without dead ends: 178 [2025-03-08 17:07:10,367 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-03-08 17:07:10,367 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 115 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 17:07:10,367 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 288 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 17:07:10,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2025-03-08 17:07:10,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2025-03-08 17:07:10,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 151 states have (on average 1.3112582781456954) internal successors, (198), 151 states have internal predecessors, (198), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-08 17:07:10,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 242 transitions. [2025-03-08 17:07:10,389 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 242 transitions. Word has length 108 [2025-03-08 17:07:10,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 17:07:10,389 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 242 transitions. [2025-03-08 17:07:10,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2025-03-08 17:07:10,390 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 242 transitions. [2025-03-08 17:07:10,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2025-03-08 17:07:10,391 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:07:10,391 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:07:10,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-08 17:07:10,391 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:07:10,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:07:10,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1005823832, now seen corresponding path program 1 times [2025-03-08 17:07:10,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:07:10,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211708549] [2025-03-08 17:07:10,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:07:10,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:07:10,411 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 110 statements into 1 equivalence classes. [2025-03-08 17:07:10,443 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 110 of 110 statements. [2025-03-08 17:07:10,444 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:07:10,444 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 17:07:10,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2132863644] [2025-03-08 17:07:10,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:07:10,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:07:10,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:07:10,449 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:07:10,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 17:07:10,600 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 110 statements into 1 equivalence classes. [2025-03-08 17:07:10,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 110 of 110 statements. [2025-03-08 17:07:10,698 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:07:10,698 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:07:10,701 INFO L256 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 54 conjuncts are in the unsatisfiable core [2025-03-08 17:07:10,710 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:07:11,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-08 17:07:11,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-08 17:07:11,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-08 17:07:11,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-08 17:07:12,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-08 17:07:12,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-08 17:07:12,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 17:07:12,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 17:07:12,956 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 31 treesize of output 29 [2025-03-08 17:07:13,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 17:07:13,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 17:07:13,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 17:07:13,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 17:07:13,088 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2025-03-08 17:07:13,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 36 [2025-03-08 17:07:13,198 INFO L349 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2025-03-08 17:07:13,198 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 87 treesize of output 80 [2025-03-08 17:07:13,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 17:07:13,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 17:07:13,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 91 [2025-03-08 17:07:13,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 17:07:13,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 28 [2025-03-08 17:07:13,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 17:07:13,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 17:07:13,440 INFO L349 Elim1Store]: treesize reduction 110, result has 19.7 percent of original size [2025-03-08 17:07:13,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 63 treesize of output 109 [2025-03-08 17:07:14,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 17:07:14,351 INFO L349 Elim1Store]: treesize reduction 56, result has 41.1 percent of original size [2025-03-08 17:07:14,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 96 treesize of output 121 [2025-03-08 17:07:14,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 17:07:14,881 INFO L349 Elim1Store]: treesize reduction 378, result has 0.3 percent of original size [2025-03-08 17:07:14,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 33 case distinctions, treesize of input 117 treesize of output 96 [2025-03-08 17:07:21,412 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 17:07:21,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1290 treesize of output 1046 [2025-03-08 17:07:21,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 17:07:21,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 17:07:21,729 INFO L349 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2025-03-08 17:07:21,729 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 3 case distinctions, treesize of input 35 treesize of output 45 [2025-03-08 17:07:22,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19