./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-23.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 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-23.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6ff28b25634280706396cfbea7901c68a9db0fe007a7f115a9dd84fe21326a05 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 16:59:39,625 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 16:59:39,679 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 16:59:39,683 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 16:59:39,683 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 16:59:39,704 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 16:59:39,705 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 16:59:39,705 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 16:59:39,706 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 16:59:39,706 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 16:59:39,706 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 16:59:39,706 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 16:59:39,706 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 16:59:39,706 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 16:59:39,706 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 16:59:39,706 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 16:59:39,707 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 16:59:39,707 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 16:59:39,707 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 16:59:39,707 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 16:59:39,707 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 16:59:39,707 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 16:59:39,707 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 16:59:39,707 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 16:59:39,707 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 16:59:39,707 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 16:59:39,707 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 16:59:39,707 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 16:59:39,707 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 16:59:39,707 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 16:59:39,707 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 16:59:39,707 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 16:59:39,708 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 16:59:39,708 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 16:59:39,708 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 16:59:39,708 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 16:59:39,708 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 16:59:39,708 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 16:59:39,708 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 16:59:39,708 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 16:59:39,708 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 16:59:39,708 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 16:59:39,708 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 16:59:39,708 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ff28b25634280706396cfbea7901c68a9db0fe007a7f115a9dd84fe21326a05 [2025-03-08 16:59:39,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 16:59:39,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 16:59:39,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 16:59:39,922 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 16:59:39,922 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 16:59:39,923 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-23.i [2025-03-08 16:59:41,005 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fefce8f2/ff054c405f0945b3aace29232d081d09/FLAGfb02bd689 [2025-03-08 16:59:41,221 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 16:59:41,222 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-23.i [2025-03-08 16:59:41,227 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fefce8f2/ff054c405f0945b3aace29232d081d09/FLAGfb02bd689 [2025-03-08 16:59:41,573 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fefce8f2/ff054c405f0945b3aace29232d081d09 [2025-03-08 16:59:41,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 16:59:41,576 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 16:59:41,577 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 16:59:41,577 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 16:59:41,579 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 16:59:41,580 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 04:59:41" (1/1) ... [2025-03-08 16:59:41,580 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79600425 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:59:41, skipping insertion in model container [2025-03-08 16:59:41,580 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 04:59:41" (1/1) ... [2025-03-08 16:59:41,591 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 16:59:41,717 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-23.i[917,930] [2025-03-08 16:59:41,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 16:59:41,789 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 16:59:41,798 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-23.i[917,930] [2025-03-08 16:59:41,838 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 16:59:41,859 INFO L204 MainTranslator]: Completed translation [2025-03-08 16:59:41,859 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:59:41 WrapperNode [2025-03-08 16:59:41,860 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 16:59:41,861 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 16:59:41,861 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 16:59:41,861 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 16:59:41,865 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:59:41" (1/1) ... [2025-03-08 16:59:41,873 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:59:41" (1/1) ... [2025-03-08 16:59:41,898 INFO L138 Inliner]: procedures = 30, calls = 178, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 551 [2025-03-08 16:59:41,899 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 16:59:41,899 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 16:59:41,899 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 16:59:41,899 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 16:59:41,905 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:59:41" (1/1) ... [2025-03-08 16:59:41,905 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:59:41" (1/1) ... [2025-03-08 16:59:41,911 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:59:41" (1/1) ... [2025-03-08 16:59:41,921 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2025-03-08 16:59:41,921 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:59:41" (1/1) ... [2025-03-08 16:59:41,921 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:59:41" (1/1) ... [2025-03-08 16:59:41,930 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:59:41" (1/1) ... [2025-03-08 16:59:41,931 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:59:41" (1/1) ... [2025-03-08 16:59:41,933 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:59:41" (1/1) ... [2025-03-08 16:59:41,934 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:59:41" (1/1) ... [2025-03-08 16:59:41,936 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 16:59:41,937 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 16:59:41,937 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 16:59:41,937 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 16:59:41,938 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:59:41" (1/1) ... [2025-03-08 16:59:41,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 16:59:41,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:59:41,968 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 16:59:41,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 16:59:41,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 16:59:41,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2025-03-08 16:59:41,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2025-03-08 16:59:41,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2025-03-08 16:59:41,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-03-08 16:59:41,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2025-03-08 16:59:41,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-03-08 16:59:41,987 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 16:59:41,987 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 16:59:41,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-08 16:59:41,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 16:59:41,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 16:59:42,087 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 16:59:42,088 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 16:59:42,497 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L137: havoc property_#t~mem109#1;havoc property_#t~mem104#1;havoc property_#t~mem105#1;havoc property_#t~ite108#1;havoc property_#t~mem106#1;havoc property_#t~mem107#1;havoc property_#t~mem110#1;havoc property_#t~mem111#1;havoc property_#t~mem114#1;havoc property_#t~mem112#1;havoc property_#t~mem113#1;havoc property_#t~ite121#1;havoc property_#t~mem120#1;havoc property_#t~mem115#1;havoc property_#t~mem116#1;havoc property_#t~ite119#1;havoc property_#t~mem117#1;havoc property_#t~mem118#1;havoc property_#t~short122#1;havoc property_#t~mem132#1;havoc property_#t~mem126#1;havoc property_#t~mem123#1;havoc property_#t~mem124#1;havoc property_#t~mem125#1;havoc property_#t~ite131#1;havoc property_#t~mem127#1;havoc property_#t~mem128#1;havoc property_#t~mem129#1;havoc property_#t~mem130#1;havoc property_#t~short133#1;havoc property_#t~mem134#1;havoc property_#t~ite144#1;havoc property_#t~mem135#1;havoc property_#t~mem136#1;havoc property_#t~mem137#1;havoc property_#t~mem138#1;havoc property_#t~ite143#1;havoc property_#t~mem139#1;havoc property_#t~ite142#1;havoc property_#t~mem141#1;havoc property_#t~mem140#1;havoc property_#t~short145#1;havoc property_#t~mem146#1;havoc property_#t~mem147#1;havoc property_#t~mem148#1;havoc property_#t~mem149#1;havoc property_#t~short150#1;havoc property_#t~ite155#1;havoc property_#t~mem152#1;havoc property_#t~mem151#1;havoc property_#t~mem154#1;havoc property_#t~mem153#1;havoc property_#t~short156#1; [2025-03-08 16:59:42,553 INFO L? ?]: Removed 148 outVars from TransFormulas that were not future-live. [2025-03-08 16:59:42,553 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 16:59:42,570 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 16:59:42,570 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 16:59:42,573 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 04:59:42 BoogieIcfgContainer [2025-03-08 16:59:42,573 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 16:59:42,576 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 16:59:42,577 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 16:59:42,584 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 16:59:42,585 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 04:59:41" (1/3) ... [2025-03-08 16:59:42,586 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358fbd8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 04:59:42, skipping insertion in model container [2025-03-08 16:59:42,586 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:59:41" (2/3) ... [2025-03-08 16:59:42,586 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358fbd8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 04:59:42, skipping insertion in model container [2025-03-08 16:59:42,587 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 04:59:42" (3/3) ... [2025-03-08 16:59:42,588 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-23.i [2025-03-08 16:59:42,600 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 16:59:42,601 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-sp_file-23.i that has 2 procedures, 123 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 16:59:42,643 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 16:59:42,653 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;@785d8585, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 16:59:42,654 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 16:59:42,657 INFO L276 IsEmpty]: Start isEmpty. Operand has 123 states, 100 states have (on average 1.41) internal successors, (141), 101 states have internal predecessors, (141), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-08 16:59:42,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2025-03-08 16:59:42,667 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:59:42,667 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:59:42,668 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:59:42,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:59:42,672 INFO L85 PathProgramCache]: Analyzing trace with hash -915037145, now seen corresponding path program 1 times [2025-03-08 16:59:42,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:59:42,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981065873] [2025-03-08 16:59:42,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:59:42,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:59:42,814 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-03-08 16:59:42,872 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-03-08 16:59:42,872 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:59:42,872 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:59:43,062 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2025-03-08 16:59:43,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:59:43,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981065873] [2025-03-08 16:59:43,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981065873] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 16:59:43,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857668372] [2025-03-08 16:59:43,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:59:43,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:59:43,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:59:43,069 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 16:59:43,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 16:59:43,216 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-03-08 16:59:43,314 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-03-08 16:59:43,314 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:59:43,314 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:59:43,318 INFO L256 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 16:59:43,325 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 16:59:43,361 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2025-03-08 16:59:43,363 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 16:59:43,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857668372] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:59:43,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 16:59:43,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 16:59:43,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685295104] [2025-03-08 16:59:43,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:59:43,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 16:59:43,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:59:43,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 16:59:43,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 16:59:43,387 INFO L87 Difference]: Start difference. First operand has 123 states, 100 states have (on average 1.41) internal successors, (141), 101 states have internal predecessors, (141), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2025-03-08 16:59:43,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:59:43,411 INFO L93 Difference]: Finished difference Result 240 states and 377 transitions. [2025-03-08 16:59:43,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 16:59:43,413 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 165 [2025-03-08 16:59:43,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:59:43,417 INFO L225 Difference]: With dead ends: 240 [2025-03-08 16:59:43,417 INFO L226 Difference]: Without dead ends: 120 [2025-03-08 16:59:43,419 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 16:59:43,421 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 16:59:43,423 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 16:59:43,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2025-03-08 16:59:43,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2025-03-08 16:59:43,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 98 states have (on average 1.3877551020408163) internal successors, (136), 98 states have internal predecessors, (136), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-08 16:59:43,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 176 transitions. [2025-03-08 16:59:43,462 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 176 transitions. Word has length 165 [2025-03-08 16:59:43,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:59:43,462 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 176 transitions. [2025-03-08 16:59:43,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2025-03-08 16:59:43,463 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 176 transitions. [2025-03-08 16:59:43,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2025-03-08 16:59:43,465 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:59:43,465 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:59:43,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 16:59:43,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-08 16:59:43,668 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:59:43,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:59:43,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1205095053, now seen corresponding path program 1 times [2025-03-08 16:59:43,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:59:43,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694717088] [2025-03-08 16:59:43,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:59:43,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:59:43,711 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-03-08 16:59:44,000 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-03-08 16:59:44,001 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:59:44,001 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:59:47,598 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-08 16:59:47,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:59:47,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694717088] [2025-03-08 16:59:47,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694717088] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:59:47,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:59:47,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-08 16:59:47,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107049063] [2025-03-08 16:59:47,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:59:47,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-08 16:59:47,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:59:47,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-08 16:59:47,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2025-03-08 16:59:47,602 INFO L87 Difference]: Start difference. First operand 120 states and 176 transitions. Second operand has 13 states, 12 states have (on average 5.666666666666667) internal successors, (68), 13 states have internal predecessors, (68), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2025-03-08 16:59:49,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:59:49,101 INFO L93 Difference]: Finished difference Result 285 states and 419 transitions. [2025-03-08 16:59:49,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 16:59:49,104 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.666666666666667) internal successors, (68), 13 states have internal predecessors, (68), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) Word has length 165 [2025-03-08 16:59:49,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:59:49,106 INFO L225 Difference]: With dead ends: 285 [2025-03-08 16:59:49,107 INFO L226 Difference]: Without dead ends: 168 [2025-03-08 16:59:49,108 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2025-03-08 16:59:49,108 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 465 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-08 16:59:49,109 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 711 Invalid, 911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-08 16:59:49,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2025-03-08 16:59:49,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 135. [2025-03-08 16:59:49,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 113 states have (on average 1.407079646017699) internal successors, (159), 113 states have internal predecessors, (159), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-08 16:59:49,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 199 transitions. [2025-03-08 16:59:49,125 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 199 transitions. Word has length 165 [2025-03-08 16:59:49,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:59:49,127 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 199 transitions. [2025-03-08 16:59:49,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.666666666666667) internal successors, (68), 13 states have internal predecessors, (68), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2025-03-08 16:59:49,127 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 199 transitions. [2025-03-08 16:59:49,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2025-03-08 16:59:49,130 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:59:49,130 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:59:49,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 16:59:49,131 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:59:49,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:59:49,131 INFO L85 PathProgramCache]: Analyzing trace with hash 911692046, now seen corresponding path program 1 times [2025-03-08 16:59:49,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:59:49,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326355795] [2025-03-08 16:59:49,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:59:49,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:59:49,168 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-03-08 16:59:49,276 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-03-08 16:59:49,277 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:59:49,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:59:52,329 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-08 16:59:52,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:59:52,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326355795] [2025-03-08 16:59:52,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326355795] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:59:52,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:59:52,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-08 16:59:52,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126435147] [2025-03-08 16:59:52,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:59:52,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-08 16:59:52,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:59:52,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-08 16:59:52,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2025-03-08 16:59:52,331 INFO L87 Difference]: Start difference. First operand 135 states and 199 transitions. Second operand has 13 states, 12 states have (on average 5.666666666666667) internal successors, (68), 13 states have internal predecessors, (68), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2025-03-08 16:59:53,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:59:53,280 INFO L93 Difference]: Finished difference Result 298 states and 438 transitions. [2025-03-08 16:59:53,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 16:59:53,281 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.666666666666667) internal successors, (68), 13 states have internal predecessors, (68), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) Word has length 165 [2025-03-08 16:59:53,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:59:53,283 INFO L225 Difference]: With dead ends: 298 [2025-03-08 16:59:53,284 INFO L226 Difference]: Without dead ends: 166 [2025-03-08 16:59:53,284 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2025-03-08 16:59:53,285 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 265 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-08 16:59:53,285 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 542 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-08 16:59:53,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2025-03-08 16:59:53,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 135. [2025-03-08 16:59:53,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 113 states have (on average 1.3982300884955752) internal successors, (158), 113 states have internal predecessors, (158), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-08 16:59:53,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 198 transitions. [2025-03-08 16:59:53,305 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 198 transitions. Word has length 165 [2025-03-08 16:59:53,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:59:53,305 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 198 transitions. [2025-03-08 16:59:53,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.666666666666667) internal successors, (68), 13 states have internal predecessors, (68), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2025-03-08 16:59:53,305 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 198 transitions. [2025-03-08 16:59:53,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2025-03-08 16:59:53,307 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:59:53,307 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:59:53,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 16:59:53,307 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:59:53,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:59:53,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1138088300, now seen corresponding path program 1 times [2025-03-08 16:59:53,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:59:53,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350049211] [2025-03-08 16:59:53,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:59:53,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:59:53,333 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-03-08 16:59:53,417 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-03-08 16:59:53,417 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:59:53,417 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:59:56,308 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-08 16:59:56,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:59:56,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350049211] [2025-03-08 16:59:56,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350049211] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:59:56,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:59:56,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-08 16:59:56,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343486947] [2025-03-08 16:59:56,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:59:56,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-08 16:59:56,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:59:56,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-08 16:59:56,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2025-03-08 16:59:56,312 INFO L87 Difference]: Start difference. First operand 135 states and 198 transitions. Second operand has 12 states, 10 states have (on average 6.8) internal successors, (68), 12 states have internal predecessors, (68), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) [2025-03-08 16:59:57,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:59:57,516 INFO L93 Difference]: Finished difference Result 311 states and 457 transitions. [2025-03-08 16:59:57,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 16:59:57,518 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 6.8) internal successors, (68), 12 states have internal predecessors, (68), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) Word has length 165 [2025-03-08 16:59:57,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:59:57,519 INFO L225 Difference]: With dead ends: 311 [2025-03-08 16:59:57,519 INFO L226 Difference]: Without dead ends: 179 [2025-03-08 16:59:57,520 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2025-03-08 16:59:57,520 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 448 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-08 16:59:57,521 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 544 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-08 16:59:57,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2025-03-08 16:59:57,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 146. [2025-03-08 16:59:57,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 124 states have (on average 1.4112903225806452) internal successors, (175), 124 states have internal predecessors, (175), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-08 16:59:57,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 215 transitions. [2025-03-08 16:59:57,539 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 215 transitions. Word has length 165 [2025-03-08 16:59:57,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:59:57,540 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 215 transitions. [2025-03-08 16:59:57,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 6.8) internal successors, (68), 12 states have internal predecessors, (68), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) [2025-03-08 16:59:57,540 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 215 transitions. [2025-03-08 16:59:57,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2025-03-08 16:59:57,541 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:59:57,541 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:59:57,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 16:59:57,542 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:59:57,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:59:57,542 INFO L85 PathProgramCache]: Analyzing trace with hash 844685293, now seen corresponding path program 1 times [2025-03-08 16:59:57,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:59:57,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81593082] [2025-03-08 16:59:57,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:59:57,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:59:57,576 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-03-08 16:59:57,653 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-03-08 16:59:57,653 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:59:57,653 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:59:58,715 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-08 16:59:58,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:59:58,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81593082] [2025-03-08 16:59:58,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81593082] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:59:58,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:59:58,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-08 16:59:58,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776223277] [2025-03-08 16:59:58,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:59:58,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-08 16:59:58,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:59:58,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-08 16:59:58,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-08 16:59:58,717 INFO L87 Difference]: Start difference. First operand 146 states and 215 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-03-08 17:00:00,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 17:00:00,139 INFO L93 Difference]: Finished difference Result 360 states and 527 transitions. [2025-03-08 17:00:00,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-08 17:00:00,140 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 165 [2025-03-08 17:00:00,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 17:00:00,141 INFO L225 Difference]: With dead ends: 360 [2025-03-08 17:00:00,141 INFO L226 Difference]: Without dead ends: 217 [2025-03-08 17:00:00,142 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2025-03-08 17:00:00,142 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 283 mSDsluCounter, 1053 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-08 17:00:00,142 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 1238 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-08 17:00:00,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2025-03-08 17:00:00,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 153. [2025-03-08 17:00:00,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 131 states have (on average 1.4198473282442747) internal successors, (186), 131 states have internal predecessors, (186), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-08 17:00:00,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 226 transitions. [2025-03-08 17:00:00,158 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 226 transitions. Word has length 165 [2025-03-08 17:00:00,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 17:00:00,158 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 226 transitions. [2025-03-08 17:00:00,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-03-08 17:00:00,159 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 226 transitions. [2025-03-08 17:00:00,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2025-03-08 17:00:00,160 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:00:00,160 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:00:00,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 17:00:00,160 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:00:00,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:00:00,161 INFO L85 PathProgramCache]: Analyzing trace with hash -2096972306, now seen corresponding path program 1 times [2025-03-08 17:00:00,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:00:00,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708293707] [2025-03-08 17:00:00,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:00:00,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:00:00,193 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-03-08 17:00:00,255 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-03-08 17:00:00,256 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:00:00,256 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:00:01,050 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-08 17:00:01,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:00:01,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708293707] [2025-03-08 17:00:01,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708293707] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:00:01,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:00:01,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-08 17:00:01,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360286332] [2025-03-08 17:00:01,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:00:01,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 17:00:01,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:00:01,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 17:00:01,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2025-03-08 17:00:01,053 INFO L87 Difference]: Start difference. First operand 153 states and 226 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-03-08 17:00:01,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 17:00:01,992 INFO L93 Difference]: Finished difference Result 338 states and 497 transitions. [2025-03-08 17:00:01,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 17:00:01,994 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 165 [2025-03-08 17:00:01,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 17:00:01,995 INFO L225 Difference]: With dead ends: 338 [2025-03-08 17:00:01,995 INFO L226 Difference]: Without dead ends: 188 [2025-03-08 17:00:01,995 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2025-03-08 17:00:01,996 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 224 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-08 17:00:01,996 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 1053 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-08 17:00:01,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2025-03-08 17:00:02,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 146. [2025-03-08 17:00:02,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 124 states have (on average 1.4112903225806452) internal successors, (175), 124 states have internal predecessors, (175), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-08 17:00:02,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 215 transitions. [2025-03-08 17:00:02,010 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 215 transitions. Word has length 165 [2025-03-08 17:00:02,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 17:00:02,011 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 215 transitions. [2025-03-08 17:00:02,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-03-08 17:00:02,011 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 215 transitions. [2025-03-08 17:00:02,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-03-08 17:00:02,012 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:00:02,012 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:00:02,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 17:00:02,012 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:00:02,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:00:02,013 INFO L85 PathProgramCache]: Analyzing trace with hash -872341009, now seen corresponding path program 1 times [2025-03-08 17:00:02,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:00:02,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404454295] [2025-03-08 17:00:02,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:00:02,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:00:02,038 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-08 17:00:02,090 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-08 17:00:02,090 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:00:02,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:00:05,308 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-08 17:00:05,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:00:05,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404454295] [2025-03-08 17:00:05,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404454295] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:00:05,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:00:05,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2025-03-08 17:00:05,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702347558] [2025-03-08 17:00:05,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:00:05,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-08 17:00:05,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:00:05,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-08 17:00:05,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2025-03-08 17:00:05,310 INFO L87 Difference]: Start difference. First operand 146 states and 215 transitions. Second operand has 18 states, 17 states have (on average 4.117647058823529) internal successors, (70), 18 states have internal predecessors, (70), 5 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2025-03-08 17:00:07,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 17:00:07,300 INFO L93 Difference]: Finished difference Result 340 states and 499 transitions. [2025-03-08 17:00:07,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 17:00:07,302 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.117647058823529) internal successors, (70), 18 states have internal predecessors, (70), 5 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) Word has length 167 [2025-03-08 17:00:07,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 17:00:07,303 INFO L225 Difference]: With dead ends: 340 [2025-03-08 17:00:07,303 INFO L226 Difference]: Without dead ends: 197 [2025-03-08 17:00:07,303 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=163, Invalid=539, Unknown=0, NotChecked=0, Total=702 [2025-03-08 17:00:07,304 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 355 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-08 17:00:07,304 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 808 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-08 17:00:07,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2025-03-08 17:00:07,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 159. [2025-03-08 17:00:07,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 137 states have (on average 1.4306569343065694) internal successors, (196), 137 states have internal predecessors, (196), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-08 17:00:07,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 236 transitions. [2025-03-08 17:00:07,316 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 236 transitions. Word has length 167 [2025-03-08 17:00:07,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 17:00:07,317 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 236 transitions. [2025-03-08 17:00:07,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.117647058823529) internal successors, (70), 18 states have internal predecessors, (70), 5 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2025-03-08 17:00:07,317 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 236 transitions. [2025-03-08 17:00:07,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-03-08 17:00:07,318 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:00:07,318 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:00:07,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 17:00:07,318 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:00:07,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:00:07,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1165744016, now seen corresponding path program 1 times [2025-03-08 17:00:07,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:00:07,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999780603] [2025-03-08 17:00:07,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:00:07,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:00:07,346 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-08 17:00:07,383 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-08 17:00:07,383 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:00:07,383 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:00:09,448 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-08 17:00:09,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:00:09,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999780603] [2025-03-08 17:00:09,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999780603] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:00:09,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:00:09,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-08 17:00:09,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414569550] [2025-03-08 17:00:09,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:00:09,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-08 17:00:09,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:00:09,449 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-08 17:00:09,450 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2025-03-08 17:00:09,450 INFO L87 Difference]: Start difference. First operand 159 states and 236 transitions. Second operand has 13 states, 12 states have (on average 5.833333333333333) internal successors, (70), 13 states have internal predecessors, (70), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2025-03-08 17:00:10,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 17:00:10,169 INFO L93 Difference]: Finished difference Result 372 states and 552 transitions. [2025-03-08 17:00:10,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 17:00:10,170 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.833333333333333) internal successors, (70), 13 states have internal predecessors, (70), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) Word has length 167 [2025-03-08 17:00:10,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 17:00:10,171 INFO L225 Difference]: With dead ends: 372 [2025-03-08 17:00:10,171 INFO L226 Difference]: Without dead ends: 216 [2025-03-08 17:00:10,171 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2025-03-08 17:00:10,172 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 328 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 17:00:10,172 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 618 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 17:00:10,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2025-03-08 17:00:10,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 172. [2025-03-08 17:00:10,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 150 states have (on average 1.4333333333333333) internal successors, (215), 150 states have internal predecessors, (215), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-08 17:00:10,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 255 transitions. [2025-03-08 17:00:10,183 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 255 transitions. Word has length 167 [2025-03-08 17:00:10,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 17:00:10,184 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 255 transitions. [2025-03-08 17:00:10,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.833333333333333) internal successors, (70), 13 states have internal predecessors, (70), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2025-03-08 17:00:10,186 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 255 transitions. [2025-03-08 17:00:10,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-03-08 17:00:10,186 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:00:10,186 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:00:10,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 17:00:10,187 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:00:10,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:00:10,187 INFO L85 PathProgramCache]: Analyzing trace with hash 79020465, now seen corresponding path program 1 times [2025-03-08 17:00:10,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:00:10,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104617116] [2025-03-08 17:00:10,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:00:10,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:00:10,225 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-08 17:00:10,288 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-08 17:00:10,288 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:00:10,289 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:00:12,810 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-08 17:00:12,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:00:12,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104617116] [2025-03-08 17:00:12,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104617116] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:00:12,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:00:12,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-08 17:00:12,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336832700] [2025-03-08 17:00:12,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:00:12,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-08 17:00:12,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:00:12,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-08 17:00:12,812 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2025-03-08 17:00:12,812 INFO L87 Difference]: Start difference. First operand 172 states and 255 transitions. Second operand has 14 states, 13 states have (on average 5.384615384615385) internal successors, (70), 14 states have internal predecessors, (70), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2025-03-08 17:00:14,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 17:00:14,008 INFO L93 Difference]: Finished difference Result 372 states and 549 transitions. [2025-03-08 17:00:14,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 17:00:14,008 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.384615384615385) internal successors, (70), 14 states have internal predecessors, (70), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) Word has length 167 [2025-03-08 17:00:14,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 17:00:14,010 INFO L225 Difference]: With dead ends: 372 [2025-03-08 17:00:14,010 INFO L226 Difference]: Without dead ends: 203 [2025-03-08 17:00:14,010 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2025-03-08 17:00:14,011 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 211 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-08 17:00:14,011 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 827 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 964 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-08 17:00:14,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2025-03-08 17:00:14,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 160. [2025-03-08 17:00:14,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 138 states have (on average 1.4202898550724639) internal successors, (196), 138 states have internal predecessors, (196), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-08 17:00:14,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 236 transitions. [2025-03-08 17:00:14,024 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 236 transitions. Word has length 167 [2025-03-08 17:00:14,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 17:00:14,025 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 236 transitions. [2025-03-08 17:00:14,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.384615384615385) internal successors, (70), 14 states have internal predecessors, (70), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2025-03-08 17:00:14,025 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 236 transitions. [2025-03-08 17:00:14,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-03-08 17:00:14,026 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:00:14,026 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:00:14,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 17:00:14,026 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:00:14,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:00:14,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1537966870, now seen corresponding path program 1 times [2025-03-08 17:00:14,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:00:14,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550868965] [2025-03-08 17:00:14,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:00:14,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:00:14,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-08 17:00:14,153 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-08 17:00:14,154 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:00:14,154 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:00:15,928 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-08 17:00:15,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:00:15,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550868965] [2025-03-08 17:00:15,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550868965] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:00:15,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:00:15,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-08 17:00:15,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273968942] [2025-03-08 17:00:15,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:00:15,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-08 17:00:15,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:00:15,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-08 17:00:15,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2025-03-08 17:00:15,930 INFO L87 Difference]: Start difference. First operand 160 states and 236 transitions. Second operand has 13 states, 12 states have (on average 5.833333333333333) internal successors, (70), 13 states have internal predecessors, (70), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2025-03-08 17:00:16,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 17:00:16,991 INFO L93 Difference]: Finished difference Result 365 states and 537 transitions. [2025-03-08 17:00:16,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 17:00:16,992 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.833333333333333) internal successors, (70), 13 states have internal predecessors, (70), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) Word has length 167 [2025-03-08 17:00:16,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 17:00:16,993 INFO L225 Difference]: With dead ends: 365 [2025-03-08 17:00:16,993 INFO L226 Difference]: Without dead ends: 208 [2025-03-08 17:00:16,993 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2025-03-08 17:00:16,994 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 456 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-08 17:00:16,994 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 646 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-08 17:00:16,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2025-03-08 17:00:17,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 171. [2025-03-08 17:00:17,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 149 states have (on average 1.436241610738255) internal successors, (214), 149 states have internal predecessors, (214), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-08 17:00:17,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 254 transitions. [2025-03-08 17:00:17,004 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 254 transitions. Word has length 167 [2025-03-08 17:00:17,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 17:00:17,005 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 254 transitions. [2025-03-08 17:00:17,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.833333333333333) internal successors, (70), 13 states have internal predecessors, (70), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2025-03-08 17:00:17,005 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 254 transitions. [2025-03-08 17:00:17,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-03-08 17:00:17,005 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:00:17,006 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:00:17,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 17:00:17,006 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:00:17,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:00:17,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1831369877, now seen corresponding path program 1 times [2025-03-08 17:00:17,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:00:17,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36754476] [2025-03-08 17:00:17,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:00:17,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:00:17,043 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-08 17:00:17,131 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-08 17:00:17,131 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:00:17,131 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:00:21,211 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-08 17:00:21,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:00:21,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36754476] [2025-03-08 17:00:21,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36754476] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:00:21,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:00:21,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-08 17:00:21,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560078097] [2025-03-08 17:00:21,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:00:21,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-08 17:00:21,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:00:21,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-08 17:00:21,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2025-03-08 17:00:21,217 INFO L87 Difference]: Start difference. First operand 171 states and 254 transitions. Second operand has 13 states, 11 states have (on average 6.363636363636363) internal successors, (70), 13 states have internal predecessors, (70), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) [2025-03-08 17:00:22,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 17:00:22,799 INFO L93 Difference]: Finished difference Result 372 states and 549 transitions. [2025-03-08 17:00:22,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 17:00:22,799 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.363636363636363) internal successors, (70), 13 states have internal predecessors, (70), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) Word has length 167 [2025-03-08 17:00:22,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 17:00:22,806 INFO L225 Difference]: With dead ends: 372 [2025-03-08 17:00:22,806 INFO L226 Difference]: Without dead ends: 204 [2025-03-08 17:00:22,807 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2025-03-08 17:00:22,808 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 349 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-08 17:00:22,808 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 437 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-08 17:00:22,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2025-03-08 17:00:22,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 169. [2025-03-08 17:00:22,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 147 states have (on average 1.435374149659864) internal successors, (211), 147 states have internal predecessors, (211), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-08 17:00:22,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 251 transitions. [2025-03-08 17:00:22,838 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 251 transitions. Word has length 167 [2025-03-08 17:00:22,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 17:00:22,838 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 251 transitions. [2025-03-08 17:00:22,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.363636363636363) internal successors, (70), 13 states have internal predecessors, (70), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) [2025-03-08 17:00:22,843 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 251 transitions. [2025-03-08 17:00:22,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-03-08 17:00:22,845 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:00:22,845 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:00:22,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 17:00:22,846 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:00:22,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:00:22,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1472315705, now seen corresponding path program 1 times [2025-03-08 17:00:22,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:00:22,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712457607] [2025-03-08 17:00:22,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:00:22,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:00:22,928 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-08 17:00:22,942 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-08 17:00:22,942 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:00:22,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:00:23,151 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2025-03-08 17:00:23,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:00:23,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712457607] [2025-03-08 17:00:23,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712457607] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:00:23,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743129687] [2025-03-08 17:00:23,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:00:23,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:00:23,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:00:23,156 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 17:00:23,158 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 17:00:23,375 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-08 17:00:23,437 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-08 17:00:23,437 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:00:23,437 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:00:23,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 17:00:23,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:00:23,491 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-08 17:00:23,491 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 17:00:23,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743129687] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:00:23,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 17:00:23,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2025-03-08 17:00:23,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769669205] [2025-03-08 17:00:23,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:00:23,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:00:23,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:00:23,493 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:00:23,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-08 17:00:23,493 INFO L87 Difference]: Start difference. First operand 169 states and 251 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-03-08 17:00:23,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 17:00:23,532 INFO L93 Difference]: Finished difference Result 338 states and 503 transitions. [2025-03-08 17:00:23,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 17:00:23,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 167 [2025-03-08 17:00:23,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 17:00:23,535 INFO L225 Difference]: With dead ends: 338 [2025-03-08 17:00:23,535 INFO L226 Difference]: Without dead ends: 172 [2025-03-08 17:00:23,536 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-08 17:00:23,537 INFO L435 NwaCegarLoop]: 173 mSDtfsCounter, 0 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 17:00:23,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 675 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 17:00:23,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2025-03-08 17:00:23,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2025-03-08 17:00:23,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 150 states have (on average 1.4266666666666667) internal successors, (214), 150 states have internal predecessors, (214), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-08 17:00:23,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 254 transitions. [2025-03-08 17:00:23,558 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 254 transitions. Word has length 167 [2025-03-08 17:00:23,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 17:00:23,559 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 254 transitions. [2025-03-08 17:00:23,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-03-08 17:00:23,559 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 254 transitions. [2025-03-08 17:00:23,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-03-08 17:00:23,560 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:00:23,560 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:00:23,568 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 17:00:23,761 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,SelfDestructingSolverStorable11 [2025-03-08 17:00:23,761 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:00:23,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:00:23,762 INFO L85 PathProgramCache]: Analyzing trace with hash -841321202, now seen corresponding path program 1 times [2025-03-08 17:00:23,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:00:23,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091647901] [2025-03-08 17:00:23,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:00:23,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:00:23,793 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-08 17:00:23,846 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-08 17:00:23,846 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:00:23,847 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:00:25,576 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-08 17:00:25,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:00:25,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091647901] [2025-03-08 17:00:25,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091647901] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:00:25,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:00:25,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 17:00:25,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113516885] [2025-03-08 17:00:25,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:00:25,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 17:00:25,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:00:25,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 17:00:25,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-03-08 17:00:25,579 INFO L87 Difference]: Start difference. First operand 172 states and 254 transitions. Second operand has 10 states, 8 states have (on average 8.75) internal successors, (70), 10 states have internal predecessors, (70), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) [2025-03-08 17:00:26,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 17:00:26,639 INFO L93 Difference]: Finished difference Result 329 states and 487 transitions. [2025-03-08 17:00:26,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 17:00:26,641 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 8.75) internal successors, (70), 10 states have internal predecessors, (70), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) Word has length 167 [2025-03-08 17:00:26,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 17:00:26,643 INFO L225 Difference]: With dead ends: 329 [2025-03-08 17:00:26,645 INFO L226 Difference]: Without dead ends: 160 [2025-03-08 17:00:26,646 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2025-03-08 17:00:26,647 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 131 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-08 17:00:26,647 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 512 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-08 17:00:26,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2025-03-08 17:00:26,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2025-03-08 17:00:26,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 138 states have (on average 1.4130434782608696) internal successors, (195), 138 states have internal predecessors, (195), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-08 17:00:26,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 235 transitions. [2025-03-08 17:00:26,678 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 235 transitions. Word has length 167 [2025-03-08 17:00:26,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 17:00:26,678 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 235 transitions. [2025-03-08 17:00:26,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 8.75) internal successors, (70), 10 states have internal predecessors, (70), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) [2025-03-08 17:00:26,679 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 235 transitions. [2025-03-08 17:00:26,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-03-08 17:00:26,680 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:00:26,681 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:00:26,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 17:00:26,681 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:00:26,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:00:26,682 INFO L85 PathProgramCache]: Analyzing trace with hash 403443279, now seen corresponding path program 1 times [2025-03-08 17:00:26,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:00:26,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483695940] [2025-03-08 17:00:26,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:00:26,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:00:26,725 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-08 17:00:26,780 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-08 17:00:26,781 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:00:26,781 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:00:30,181 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-08 17:00:30,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:00:30,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483695940] [2025-03-08 17:00:30,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483695940] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:00:30,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:00:30,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-08 17:00:30,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024445330] [2025-03-08 17:00:30,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:00:30,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-08 17:00:30,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:00:30,183 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-08 17:00:30,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2025-03-08 17:00:30,183 INFO L87 Difference]: Start difference. First operand 160 states and 235 transitions. Second operand has 14 states, 12 states have (on average 5.833333333333333) internal successors, (70), 14 states have internal predecessors, (70), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) [2025-03-08 17:00:31,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 17:00:31,653 INFO L93 Difference]: Finished difference Result 355 states and 518 transitions. [2025-03-08 17:00:31,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 17:00:31,655 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 5.833333333333333) internal successors, (70), 14 states have internal predecessors, (70), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) Word has length 167 [2025-03-08 17:00:31,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 17:00:31,656 INFO L225 Difference]: With dead ends: 355 [2025-03-08 17:00:31,656 INFO L226 Difference]: Without dead ends: 198 [2025-03-08 17:00:31,656 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2025-03-08 17:00:31,657 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 300 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-08 17:00:31,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 682 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 966 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-08 17:00:31,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2025-03-08 17:00:31,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 162. [2025-03-08 17:00:31,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 140 states have (on average 1.4071428571428573) internal successors, (197), 140 states have internal predecessors, (197), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-08 17:00:31,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 237 transitions. [2025-03-08 17:00:31,675 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 237 transitions. Word has length 167 [2025-03-08 17:00:31,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 17:00:31,676 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 237 transitions. [2025-03-08 17:00:31,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 5.833333333333333) internal successors, (70), 14 states have internal predecessors, (70), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) [2025-03-08 17:00:31,676 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 237 transitions. [2025-03-08 17:00:31,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-03-08 17:00:31,677 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:00:31,677 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:00:31,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-08 17:00:31,678 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:00:31,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:00:31,678 INFO L85 PathProgramCache]: Analyzing trace with hash 110040272, now seen corresponding path program 1 times [2025-03-08 17:00:31,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:00:31,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732185167] [2025-03-08 17:00:31,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:00:31,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:00:31,706 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-08 17:00:31,764 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-08 17:00:31,765 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:00:31,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:00:34,735 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-08 17:00:34,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:00:34,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732185167] [2025-03-08 17:00:34,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732185167] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:00:34,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:00:34,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2025-03-08 17:00:34,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227885203] [2025-03-08 17:00:34,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:00:34,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-08 17:00:34,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:00:34,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-08 17:00:34,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2025-03-08 17:00:34,737 INFO L87 Difference]: Start difference. First operand 162 states and 237 transitions. Second operand has 15 states, 14 states have (on average 5.0) internal successors, (70), 15 states have internal predecessors, (70), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2025-03-08 17:00:37,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 17:00:37,213 INFO L93 Difference]: Finished difference Result 407 states and 589 transitions. [2025-03-08 17:00:37,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 17:00:37,214 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.0) internal successors, (70), 15 states have internal predecessors, (70), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) Word has length 167 [2025-03-08 17:00:37,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 17:00:37,215 INFO L225 Difference]: With dead ends: 407 [2025-03-08 17:00:37,215 INFO L226 Difference]: Without dead ends: 248 [2025-03-08 17:00:37,216 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2025-03-08 17:00:37,216 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 365 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 1362 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-08 17:00:37,217 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 1139 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1362 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-08 17:00:37,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2025-03-08 17:00:37,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 163. [2025-03-08 17:00:37,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 141 states have (on average 1.4113475177304964) internal successors, (199), 141 states have internal predecessors, (199), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-08 17:00:37,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 239 transitions. [2025-03-08 17:00:37,229 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 239 transitions. Word has length 167 [2025-03-08 17:00:37,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 17:00:37,230 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 239 transitions. [2025-03-08 17:00:37,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.0) internal successors, (70), 15 states have internal predecessors, (70), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2025-03-08 17:00:37,230 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 239 transitions. [2025-03-08 17:00:37,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-03-08 17:00:37,231 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:00:37,231 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:00:37,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-08 17:00:37,231 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:00:37,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:00:37,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1463349969, now seen corresponding path program 1 times [2025-03-08 17:00:37,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:00:37,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677804730] [2025-03-08 17:00:37,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:00:37,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:00:37,269 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-08 17:00:37,327 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-08 17:00:37,327 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:00:37,327 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:00:39,277 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-08 17:00:39,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:00:39,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677804730] [2025-03-08 17:00:39,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677804730] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:00:39,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:00:39,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-08 17:00:39,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959169064] [2025-03-08 17:00:39,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:00:39,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-08 17:00:39,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:00:39,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-08 17:00:39,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2025-03-08 17:00:39,278 INFO L87 Difference]: Start difference. First operand 163 states and 239 transitions. Second operand has 14 states, 13 states have (on average 5.384615384615385) internal successors, (70), 14 states have internal predecessors, (70), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2025-03-08 17:00:40,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 17:00:40,513 INFO L93 Difference]: Finished difference Result 359 states and 523 transitions. [2025-03-08 17:00:40,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 17:00:40,513 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.384615384615385) internal successors, (70), 14 states have internal predecessors, (70), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) Word has length 167 [2025-03-08 17:00:40,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 17:00:40,515 INFO L225 Difference]: With dead ends: 359 [2025-03-08 17:00:40,515 INFO L226 Difference]: Without dead ends: 199 [2025-03-08 17:00:40,515 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2025-03-08 17:00:40,515 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 321 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-08 17:00:40,515 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 962 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-08 17:00:40,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2025-03-08 17:00:40,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 151. [2025-03-08 17:00:40,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 129 states have (on average 1.3953488372093024) internal successors, (180), 129 states have internal predecessors, (180), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-08 17:00:40,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 220 transitions. [2025-03-08 17:00:40,527 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 220 transitions. Word has length 167 [2025-03-08 17:00:40,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 17:00:40,527 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 220 transitions. [2025-03-08 17:00:40,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.384615384615385) internal successors, (70), 14 states have internal predecessors, (70), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2025-03-08 17:00:40,528 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 220 transitions. [2025-03-08 17:00:40,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-03-08 17:00:40,529 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:00:40,530 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:00:40,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-08 17:00:40,530 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:00:40,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:00:40,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1506947063, now seen corresponding path program 1 times [2025-03-08 17:00:40,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:00:40,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253536713] [2025-03-08 17:00:40,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:00:40,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:00:40,559 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-08 17:00:40,616 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-08 17:00:40,617 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:00:40,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:00:43,449 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-08 17:00:43,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:00:43,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253536713] [2025-03-08 17:00:43,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253536713] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:00:43,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:00:43,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-08 17:00:43,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730564401] [2025-03-08 17:00:43,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:00:43,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-08 17:00:43,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:00:43,451 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-08 17:00:43,451 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2025-03-08 17:00:43,451 INFO L87 Difference]: Start difference. First operand 151 states and 220 transitions. Second operand has 13 states, 11 states have (on average 6.363636363636363) internal successors, (70), 13 states have internal predecessors, (70), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) [2025-03-08 17:00:44,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 17:00:44,814 INFO L93 Difference]: Finished difference Result 348 states and 505 transitions. [2025-03-08 17:00:44,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 17:00:44,814 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.363636363636363) internal successors, (70), 13 states have internal predecessors, (70), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) Word has length 167 [2025-03-08 17:00:44,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 17:00:44,816 INFO L225 Difference]: With dead ends: 348 [2025-03-08 17:00:44,816 INFO L226 Difference]: Without dead ends: 200 [2025-03-08 17:00:44,816 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2025-03-08 17:00:44,816 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 206 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-08 17:00:44,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 646 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-08 17:00:44,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2025-03-08 17:00:44,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 162. [2025-03-08 17:00:44,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 140 states have (on average 1.4071428571428573) internal successors, (197), 140 states have internal predecessors, (197), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-08 17:00:44,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 237 transitions. [2025-03-08 17:00:44,827 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 237 transitions. Word has length 167 [2025-03-08 17:00:44,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 17:00:44,827 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 237 transitions. [2025-03-08 17:00:44,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.363636363636363) internal successors, (70), 13 states have internal predecessors, (70), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) [2025-03-08 17:00:44,827 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 237 transitions. [2025-03-08 17:00:44,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-03-08 17:00:44,828 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:00:44,828 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:00:44,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-08 17:00:44,828 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:00:44,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:00:44,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1800350070, now seen corresponding path program 1 times [2025-03-08 17:00:44,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:00:44,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963020295] [2025-03-08 17:00:44,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:00:44,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:00:44,854 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-08 17:00:44,924 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-08 17:00:44,924 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:00:44,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:00:45,902 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-08 17:00:45,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:00:45,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963020295] [2025-03-08 17:00:45,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963020295] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:00:45,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:00:45,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-08 17:00:45,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696817326] [2025-03-08 17:00:45,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:00:45,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-08 17:00:45,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:00:45,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-08 17:00:45,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2025-03-08 17:00:45,904 INFO L87 Difference]: Start difference. First operand 162 states and 237 transitions. Second operand has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-03-08 17:00:46,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 17:00:46,839 INFO L93 Difference]: Finished difference Result 359 states and 521 transitions. [2025-03-08 17:00:46,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 17:00:46,839 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 167 [2025-03-08 17:00:46,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 17:00:46,840 INFO L225 Difference]: With dead ends: 359 [2025-03-08 17:00:46,840 INFO L226 Difference]: Without dead ends: 200 [2025-03-08 17:00:46,841 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2025-03-08 17:00:46,841 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 219 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-08 17:00:46,841 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 1047 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-08 17:00:46,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2025-03-08 17:00:46,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 160. [2025-03-08 17:00:46,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 138 states have (on average 1.4130434782608696) internal successors, (195), 138 states have internal predecessors, (195), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-08 17:00:46,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 235 transitions. [2025-03-08 17:00:46,852 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 235 transitions. Word has length 167 [2025-03-08 17:00:46,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 17:00:46,852 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 235 transitions. [2025-03-08 17:00:46,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-03-08 17:00:46,852 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 235 transitions. [2025-03-08 17:00:46,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2025-03-08 17:00:46,853 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:00:46,853 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:00:46,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-08 17:00:46,853 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:00:46,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:00:46,854 INFO L85 PathProgramCache]: Analyzing trace with hash -794229812, now seen corresponding path program 1 times [2025-03-08 17:00:46,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:00:46,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982425449] [2025-03-08 17:00:46,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:00:46,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:00:46,879 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 169 statements into 1 equivalence classes. [2025-03-08 17:00:46,933 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 169 of 169 statements. [2025-03-08 17:00:46,933 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:00:46,933 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat