./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-12.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-12.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 6426d30449276f41292d944281f990de88775c0c256461a4ce5af87d5d4d093f --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 15:17:59,980 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 15:18:00,039 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 15:18:00,045 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 15:18:00,045 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 15:18:00,067 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 15:18:00,068 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 15:18:00,068 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 15:18:00,068 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 15:18:00,068 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 15:18:00,068 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 15:18:00,069 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 15:18:00,069 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 15:18:00,069 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 15:18:00,070 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 15:18:00,070 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 15:18:00,070 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 15:18:00,070 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 15:18:00,070 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 15:18:00,070 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 15:18:00,070 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 15:18:00,070 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 15:18:00,070 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 15:18:00,070 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 15:18:00,070 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 15:18:00,071 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 15:18:00,071 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 15:18:00,072 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 15:18:00,072 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 15:18:00,072 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 15:18:00,072 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 15:18:00,072 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 15:18:00,072 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 15:18:00,072 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 15:18:00,072 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 15:18:00,072 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 15:18:00,072 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 15:18:00,072 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 15:18:00,072 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 15:18:00,073 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 15:18:00,073 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 15:18:00,073 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 15:18:00,073 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 15:18:00,073 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 15:18:00,073 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 15:18:00,073 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 15:18:00,073 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 15:18:00,073 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 15:18:00,073 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-jdk21/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 -> 6426d30449276f41292d944281f990de88775c0c256461a4ce5af87d5d4d093f [2025-01-09 15:18:00,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 15:18:00,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 15:18:00,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 15:18:00,298 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 15:18:00,298 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 15:18:00,299 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-12.i [2025-01-09 15:18:01,413 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e259767d1/2dfaac03b3554e8fb95c2e00fec24f96/FLAGc0b3b47dc [2025-01-09 15:18:01,722 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 15:18:01,722 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-12.i [2025-01-09 15:18:01,732 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e259767d1/2dfaac03b3554e8fb95c2e00fec24f96/FLAGc0b3b47dc [2025-01-09 15:18:02,000 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e259767d1/2dfaac03b3554e8fb95c2e00fec24f96 [2025-01-09 15:18:02,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 15:18:02,007 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 15:18:02,008 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 15:18:02,008 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 15:18:02,015 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 15:18:02,016 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 03:18:02" (1/1) ... [2025-01-09 15:18:02,016 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57d4671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:18:02, skipping insertion in model container [2025-01-09 15:18:02,016 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 03:18:02" (1/1) ... [2025-01-09 15:18:02,030 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 15:18:02,138 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-12.i[916,929] [2025-01-09 15:18:02,206 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 15:18:02,215 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 15:18:02,222 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-12.i[916,929] [2025-01-09 15:18:02,258 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 15:18:02,269 INFO L204 MainTranslator]: Completed translation [2025-01-09 15:18:02,270 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:18:02 WrapperNode [2025-01-09 15:18:02,270 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 15:18:02,271 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 15:18:02,271 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 15:18:02,271 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 15:18:02,275 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:18:02" (1/1) ... [2025-01-09 15:18:02,282 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:18:02" (1/1) ... [2025-01-09 15:18:02,318 INFO L138 Inliner]: procedures = 26, calls = 153, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 444 [2025-01-09 15:18:02,319 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 15:18:02,319 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 15:18:02,319 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 15:18:02,319 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 15:18:02,330 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:18:02" (1/1) ... [2025-01-09 15:18:02,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:18:02" (1/1) ... [2025-01-09 15:18:02,336 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:18:02" (1/1) ... [2025-01-09 15:18:02,363 INFO L175 MemorySlicer]: Split 123 memory accesses to 4 slices as follows [2, 38, 12, 71]. 58 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 2, 4]. The 14 writes are split as follows [0, 8, 2, 4]. [2025-01-09 15:18:02,365 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:18:02" (1/1) ... [2025-01-09 15:18:02,365 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:18:02" (1/1) ... [2025-01-09 15:18:02,381 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:18:02" (1/1) ... [2025-01-09 15:18:02,386 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:18:02" (1/1) ... [2025-01-09 15:18:02,392 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:18:02" (1/1) ... [2025-01-09 15:18:02,394 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:18:02" (1/1) ... [2025-01-09 15:18:02,399 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:18:02" (1/1) ... [2025-01-09 15:18:02,401 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 15:18:02,406 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 15:18:02,406 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 15:18:02,406 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 15:18:02,407 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:18:02" (1/1) ... [2025-01-09 15:18:02,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 15:18:02,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 15:18:02,433 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 15:18:02,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 15:18:02,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 15:18:02,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-09 15:18:02,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-09 15:18:02,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-09 15:18:02,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-01-09 15:18:02,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-09 15:18:02,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-09 15:18:02,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-09 15:18:02,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-01-09 15:18:02,455 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 15:18:02,455 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 15:18:02,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 15:18:02,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-09 15:18:02,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-09 15:18:02,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-01-09 15:18:02,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 15:18:02,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 15:18:02,527 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 15:18:02,528 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 15:18:02,928 INFO L? ?]: Removed 131 outVars from TransFormulas that were not future-live. [2025-01-09 15:18:02,929 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 15:18:02,941 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 15:18:02,941 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 15:18:02,941 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:18:02 BoogieIcfgContainer [2025-01-09 15:18:02,942 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 15:18:02,945 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 15:18:02,945 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 15:18:02,949 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 15:18:02,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 03:18:02" (1/3) ... [2025-01-09 15:18:02,950 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c4328d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 03:18:02, skipping insertion in model container [2025-01-09 15:18:02,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:18:02" (2/3) ... [2025-01-09 15:18:02,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c4328d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 03:18:02, skipping insertion in model container [2025-01-09 15:18:02,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:18:02" (3/3) ... [2025-01-09 15:18:02,952 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-12.i [2025-01-09 15:18:02,964 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 15:18:02,966 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-a_file-12.i that has 2 procedures, 97 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 15:18:03,016 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 15:18:03,026 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;@3acf6af0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 15:18:03,027 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 15:18:03,029 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 78 states have (on average 1.3846153846153846) internal successors, (108), 79 states have internal predecessors, (108), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-01-09 15:18:03,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-01-09 15:18:03,037 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:03,037 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:03,038 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:03,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:03,041 INFO L85 PathProgramCache]: Analyzing trace with hash -253534540, now seen corresponding path program 1 times [2025-01-09 15:18:03,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:03,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996066240] [2025-01-09 15:18:03,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:03,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:03,109 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-01-09 15:18:03,124 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-01-09 15:18:03,124 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:03,125 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:03,204 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2025-01-09 15:18:03,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:03,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996066240] [2025-01-09 15:18:03,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996066240] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 15:18:03,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96293852] [2025-01-09 15:18:03,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:03,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:18:03,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 15:18:03,212 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 15:18:03,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 15:18:03,303 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-01-09 15:18:03,381 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-01-09 15:18:03,382 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:03,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:03,385 INFO L256 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 15:18:03,390 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 15:18:03,403 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2025-01-09 15:18:03,403 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 15:18:03,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96293852] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:18:03,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 15:18:03,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 15:18:03,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265594318] [2025-01-09 15:18:03,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:18:03,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 15:18:03,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:03,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 15:18:03,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 15:18:03,422 INFO L87 Difference]: Start difference. First operand has 97 states, 78 states have (on average 1.3846153846153846) internal successors, (108), 79 states have internal predecessors, (108), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2025-01-09 15:18:03,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:03,442 INFO L93 Difference]: Finished difference Result 182 states and 281 transitions. [2025-01-09 15:18:03,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 15:18:03,446 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 117 [2025-01-09 15:18:03,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:03,451 INFO L225 Difference]: With dead ends: 182 [2025-01-09 15:18:03,452 INFO L226 Difference]: Without dead ends: 88 [2025-01-09 15:18:03,455 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 15:18:03,458 INFO L435 NwaCegarLoop]: 123 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, 123 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 [2025-01-09 15:18:03,460 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 15:18:03,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2025-01-09 15:18:03,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2025-01-09 15:18:03,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 70 states have (on average 1.3) internal successors, (91), 70 states have internal predecessors, (91), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-01-09 15:18:03,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 123 transitions. [2025-01-09 15:18:03,491 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 123 transitions. Word has length 117 [2025-01-09 15:18:03,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:03,491 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 123 transitions. [2025-01-09 15:18:03,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2025-01-09 15:18:03,492 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 123 transitions. [2025-01-09 15:18:03,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-01-09 15:18:03,495 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:03,496 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:03,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 15:18:03,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-01-09 15:18:03,697 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:03,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:03,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1078795924, now seen corresponding path program 1 times [2025-01-09 15:18:03,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:03,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007707066] [2025-01-09 15:18:03,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:03,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:03,726 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-01-09 15:18:03,779 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-01-09 15:18:03,779 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:03,779 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:04,066 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2025-01-09 15:18:04,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:04,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007707066] [2025-01-09 15:18:04,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007707066] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 15:18:04,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261080420] [2025-01-09 15:18:04,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:04,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:18:04,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 15:18:04,069 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 15:18:04,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 15:18:04,149 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-01-09 15:18:04,219 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-01-09 15:18:04,220 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:04,220 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:04,221 INFO L256 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 15:18:04,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 15:18:04,253 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:18:04,253 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 15:18:04,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261080420] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:18:04,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 15:18:04,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2025-01-09 15:18:04,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684996573] [2025-01-09 15:18:04,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:18:04,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 15:18:04,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:04,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 15:18:04,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-01-09 15:18:04,255 INFO L87 Difference]: Start difference. First operand 88 states and 123 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-01-09 15:18:04,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:04,277 INFO L93 Difference]: Finished difference Result 173 states and 243 transitions. [2025-01-09 15:18:04,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 15:18:04,278 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 117 [2025-01-09 15:18:04,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:04,283 INFO L225 Difference]: With dead ends: 173 [2025-01-09 15:18:04,283 INFO L226 Difference]: Without dead ends: 88 [2025-01-09 15:18:04,284 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-01-09 15:18:04,284 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 0 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:04,285 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 351 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 15:18:04,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2025-01-09 15:18:04,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2025-01-09 15:18:04,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 70 states have (on average 1.2857142857142858) internal successors, (90), 70 states have internal predecessors, (90), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-01-09 15:18:04,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 122 transitions. [2025-01-09 15:18:04,291 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 122 transitions. Word has length 117 [2025-01-09 15:18:04,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:04,293 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 122 transitions. [2025-01-09 15:18:04,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-01-09 15:18:04,293 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 122 transitions. [2025-01-09 15:18:04,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2025-01-09 15:18:04,294 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:04,294 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:04,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 15:18:04,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:18:04,495 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:04,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:04,496 INFO L85 PathProgramCache]: Analyzing trace with hash 928929970, now seen corresponding path program 1 times [2025-01-09 15:18:04,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:04,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206731063] [2025-01-09 15:18:04,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:04,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:04,513 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 119 statements into 1 equivalence classes. [2025-01-09 15:18:04,546 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 119 of 119 statements. [2025-01-09 15:18:04,549 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:04,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:04,757 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2025-01-09 15:18:04,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:04,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206731063] [2025-01-09 15:18:04,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206731063] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 15:18:04,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579826283] [2025-01-09 15:18:04,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:04,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:18:04,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 15:18:04,763 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 15:18:04,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 15:18:04,842 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 119 statements into 1 equivalence classes. [2025-01-09 15:18:04,879 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 119 of 119 statements. [2025-01-09 15:18:04,880 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:04,880 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:04,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-09 15:18:04,897 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 15:18:04,925 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:18:04,925 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 15:18:04,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579826283] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:18:04,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 15:18:04,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2025-01-09 15:18:04,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070205575] [2025-01-09 15:18:04,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:18:04,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 15:18:04,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:04,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 15:18:04,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-01-09 15:18:04,927 INFO L87 Difference]: Start difference. First operand 88 states and 122 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-01-09 15:18:04,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:04,962 INFO L93 Difference]: Finished difference Result 176 states and 245 transitions. [2025-01-09 15:18:04,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 15:18:04,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 119 [2025-01-09 15:18:04,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:04,967 INFO L225 Difference]: With dead ends: 176 [2025-01-09 15:18:04,967 INFO L226 Difference]: Without dead ends: 91 [2025-01-09 15:18:04,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-01-09 15:18:04,968 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 0 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:04,968 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 461 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 15:18:04,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2025-01-09 15:18:04,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2025-01-09 15:18:04,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 73 states have (on average 1.273972602739726) internal successors, (93), 73 states have internal predecessors, (93), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-01-09 15:18:04,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 125 transitions. [2025-01-09 15:18:04,977 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 125 transitions. Word has length 119 [2025-01-09 15:18:04,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:04,977 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 125 transitions. [2025-01-09 15:18:04,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-01-09 15:18:04,977 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 125 transitions. [2025-01-09 15:18:04,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2025-01-09 15:18:04,979 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:04,979 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:04,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-09 15:18:05,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:18:05,180 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:05,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:05,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1684265354, now seen corresponding path program 1 times [2025-01-09 15:18:05,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:05,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039883682] [2025-01-09 15:18:05,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:05,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:05,193 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-01-09 15:18:05,241 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-01-09 15:18:05,241 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:05,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:06,262 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:18:06,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:06,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039883682] [2025-01-09 15:18:06,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039883682] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:18:06,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:18:06,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-01-09 15:18:06,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734504374] [2025-01-09 15:18:06,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:18:06,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 15:18:06,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:06,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 15:18:06,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-01-09 15:18:06,265 INFO L87 Difference]: Start difference. First operand 91 states and 125 transitions. Second operand has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2025-01-09 15:18:06,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:06,473 INFO L93 Difference]: Finished difference Result 133 states and 177 transitions. [2025-01-09 15:18:06,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 15:18:06,474 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 121 [2025-01-09 15:18:06,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:06,476 INFO L225 Difference]: With dead ends: 133 [2025-01-09 15:18:06,476 INFO L226 Difference]: Without dead ends: 131 [2025-01-09 15:18:06,476 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2025-01-09 15:18:06,476 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 36 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:06,477 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 767 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 15:18:06,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2025-01-09 15:18:06,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 116. [2025-01-09 15:18:06,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 98 states have (on average 1.2755102040816326) internal successors, (125), 98 states have internal predecessors, (125), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-01-09 15:18:06,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 157 transitions. [2025-01-09 15:18:06,492 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 157 transitions. Word has length 121 [2025-01-09 15:18:06,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:06,492 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 157 transitions. [2025-01-09 15:18:06,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2025-01-09 15:18:06,492 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 157 transitions. [2025-01-09 15:18:06,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2025-01-09 15:18:06,493 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:06,493 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:06,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 15:18:06,493 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:06,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:06,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1993155792, now seen corresponding path program 1 times [2025-01-09 15:18:06,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:06,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882553948] [2025-01-09 15:18:06,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:06,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:06,508 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-01-09 15:18:06,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-01-09 15:18:06,595 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:06,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:07,847 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2025-01-09 15:18:07,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:07,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882553948] [2025-01-09 15:18:07,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882553948] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 15:18:07,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975770483] [2025-01-09 15:18:07,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:07,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:18:07,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 15:18:07,854 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 15:18:07,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 15:18:07,938 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-01-09 15:18:07,988 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-01-09 15:18:07,989 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:07,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:07,992 INFO L256 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 53 conjuncts are in the unsatisfiable core [2025-01-09 15:18:07,998 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 15:18:08,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-01-09 15:18:08,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2025-01-09 15:18:08,459 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 15:18:08,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2025-01-09 15:18:08,868 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 15:18:08,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 38 [2025-01-09 15:18:09,103 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 15:18:09,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 40 [2025-01-09 15:18:09,194 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 72 proven. 144 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2025-01-09 15:18:09,194 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 15:18:10,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2025-01-09 15:18:10,060 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 6 proven. 156 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2025-01-09 15:18:10,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975770483] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 15:18:10,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 15:18:10,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 25, 25] total 50 [2025-01-09 15:18:10,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084151500] [2025-01-09 15:18:10,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 15:18:10,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2025-01-09 15:18:10,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:10,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2025-01-09 15:18:10,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=407, Invalid=2043, Unknown=0, NotChecked=0, Total=2450 [2025-01-09 15:18:10,064 INFO L87 Difference]: Start difference. First operand 116 states and 157 transitions. Second operand has 50 states, 40 states have (on average 3.5) internal successors, (140), 45 states have internal predecessors, (140), 13 states have call successors, (47), 5 states have call predecessors, (47), 10 states have return successors, (47), 8 states have call predecessors, (47), 13 states have call successors, (47) [2025-01-09 15:18:11,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:11,192 INFO L93 Difference]: Finished difference Result 191 states and 241 transitions. [2025-01-09 15:18:11,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-01-09 15:18:11,193 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 40 states have (on average 3.5) internal successors, (140), 45 states have internal predecessors, (140), 13 states have call successors, (47), 5 states have call predecessors, (47), 10 states have return successors, (47), 8 states have call predecessors, (47), 13 states have call successors, (47) Word has length 122 [2025-01-09 15:18:11,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:11,194 INFO L225 Difference]: With dead ends: 191 [2025-01-09 15:18:11,194 INFO L226 Difference]: Without dead ends: 189 [2025-01-09 15:18:11,196 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 214 SyntacticMatches, 6 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1253 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=818, Invalid=3472, Unknown=0, NotChecked=0, Total=4290 [2025-01-09 15:18:11,196 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 705 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 1932 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:11,196 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 1932 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1181 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-01-09 15:18:11,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2025-01-09 15:18:11,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 132. [2025-01-09 15:18:11,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 110 states have (on average 1.2454545454545454) internal successors, (137), 110 states have internal predecessors, (137), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-01-09 15:18:11,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 169 transitions. [2025-01-09 15:18:11,205 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 169 transitions. Word has length 122 [2025-01-09 15:18:11,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:11,205 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 169 transitions. [2025-01-09 15:18:11,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 40 states have (on average 3.5) internal successors, (140), 45 states have internal predecessors, (140), 13 states have call successors, (47), 5 states have call predecessors, (47), 10 states have return successors, (47), 8 states have call predecessors, (47), 13 states have call successors, (47) [2025-01-09 15:18:11,206 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 169 transitions. [2025-01-09 15:18:11,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2025-01-09 15:18:11,206 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:11,207 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:11,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-09 15:18:11,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:18:11,411 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:11,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:11,412 INFO L85 PathProgramCache]: Analyzing trace with hash -2071042037, now seen corresponding path program 1 times [2025-01-09 15:18:11,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:11,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20117225] [2025-01-09 15:18:11,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:11,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:11,426 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-01-09 15:18:11,476 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-01-09 15:18:11,477 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:11,477 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:12,527 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2025-01-09 15:18:12,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:12,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20117225] [2025-01-09 15:18:12,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20117225] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 15:18:12,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194162155] [2025-01-09 15:18:12,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:12,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:18:12,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 15:18:12,531 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 15:18:12,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-09 15:18:12,610 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-01-09 15:18:12,647 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-01-09 15:18:12,648 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:12,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:12,650 INFO L256 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 57 conjuncts are in the unsatisfiable core [2025-01-09 15:18:12,656 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 15:18:12,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2025-01-09 15:18:13,030 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 15:18:13,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2025-01-09 15:18:13,477 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 15:18:13,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 38 [2025-01-09 15:18:13,682 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 15:18:13,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 36 [2025-01-09 15:18:13,771 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 72 proven. 144 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2025-01-09 15:18:13,771 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 15:18:14,557 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 6 proven. 156 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2025-01-09 15:18:14,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194162155] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 15:18:14,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 15:18:14,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 26, 26] total 52 [2025-01-09 15:18:14,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260138846] [2025-01-09 15:18:14,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 15:18:14,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2025-01-09 15:18:14,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:14,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2025-01-09 15:18:14,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=2244, Unknown=0, NotChecked=0, Total=2652 [2025-01-09 15:18:14,560 INFO L87 Difference]: Start difference. First operand 132 states and 169 transitions. Second operand has 52 states, 42 states have (on average 3.4047619047619047) internal successors, (143), 47 states have internal predecessors, (143), 13 states have call successors, (47), 5 states have call predecessors, (47), 10 states have return successors, (47), 8 states have call predecessors, (47), 13 states have call successors, (47) [2025-01-09 15:18:16,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:16,055 INFO L93 Difference]: Finished difference Result 213 states and 264 transitions. [2025-01-09 15:18:16,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2025-01-09 15:18:16,056 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 42 states have (on average 3.4047619047619047) internal successors, (143), 47 states have internal predecessors, (143), 13 states have call successors, (47), 5 states have call predecessors, (47), 10 states have return successors, (47), 8 states have call predecessors, (47), 13 states have call successors, (47) Word has length 123 [2025-01-09 15:18:16,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:16,057 INFO L225 Difference]: With dead ends: 213 [2025-01-09 15:18:16,057 INFO L226 Difference]: Without dead ends: 211 [2025-01-09 15:18:16,059 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 216 SyntacticMatches, 5 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1711 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1027, Invalid=5135, Unknown=0, NotChecked=0, Total=6162 [2025-01-09 15:18:16,061 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 795 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 1509 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 1984 SdHoareTripleChecker+Invalid, 1563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:16,061 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [799 Valid, 1984 Invalid, 1563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1509 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-01-09 15:18:16,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2025-01-09 15:18:16,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 134. [2025-01-09 15:18:16,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 112 states have (on average 1.25) internal successors, (140), 112 states have internal predecessors, (140), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-01-09 15:18:16,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 172 transitions. [2025-01-09 15:18:16,077 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 172 transitions. Word has length 123 [2025-01-09 15:18:16,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:16,078 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 172 transitions. [2025-01-09 15:18:16,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 42 states have (on average 3.4047619047619047) internal successors, (143), 47 states have internal predecessors, (143), 13 states have call successors, (47), 5 states have call predecessors, (47), 10 states have return successors, (47), 8 states have call predecessors, (47), 13 states have call successors, (47) [2025-01-09 15:18:16,078 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 172 transitions. [2025-01-09 15:18:16,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2025-01-09 15:18:16,079 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:16,079 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:16,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-09 15:18:16,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:18:16,280 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:16,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:16,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1257942411, now seen corresponding path program 1 times [2025-01-09 15:18:16,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:16,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242293945] [2025-01-09 15:18:16,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:16,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:16,290 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-01-09 15:18:16,309 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-01-09 15:18:16,310 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:16,310 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:16,459 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2025-01-09 15:18:16,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:16,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242293945] [2025-01-09 15:18:16,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242293945] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 15:18:16,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971854964] [2025-01-09 15:18:16,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:16,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:18:16,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 15:18:16,462 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 15:18:16,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-09 15:18:16,542 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-01-09 15:18:16,575 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-01-09 15:18:16,576 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:16,576 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:16,580 INFO L256 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-09 15:18:16,583 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 15:18:16,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 23 [2025-01-09 15:18:16,710 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 225 proven. 30 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2025-01-09 15:18:16,711 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 15:18:16,868 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2025-01-09 15:18:16,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971854964] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 15:18:16,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 15:18:16,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-01-09 15:18:16,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656394368] [2025-01-09 15:18:16,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 15:18:16,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 15:18:16,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:16,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 15:18:16,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-01-09 15:18:16,871 INFO L87 Difference]: Start difference. First operand 134 states and 172 transitions. Second operand has 11 states, 8 states have (on average 7.25) internal successors, (58), 11 states have internal predecessors, (58), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (28), 2 states have call predecessors, (28), 5 states have call successors, (28) [2025-01-09 15:18:17,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:17,083 INFO L93 Difference]: Finished difference Result 273 states and 348 transitions. [2025-01-09 15:18:17,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-09 15:18:17,083 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 7.25) internal successors, (58), 11 states have internal predecessors, (58), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (28), 2 states have call predecessors, (28), 5 states have call successors, (28) Word has length 124 [2025-01-09 15:18:17,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:17,084 INFO L225 Difference]: With dead ends: 273 [2025-01-09 15:18:17,085 INFO L226 Difference]: Without dead ends: 142 [2025-01-09 15:18:17,085 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 243 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2025-01-09 15:18:17,086 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 69 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:17,086 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 453 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 15:18:17,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2025-01-09 15:18:17,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 138. [2025-01-09 15:18:17,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 115 states have (on average 1.2347826086956522) internal successors, (142), 115 states have internal predecessors, (142), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-01-09 15:18:17,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 174 transitions. [2025-01-09 15:18:17,093 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 174 transitions. Word has length 124 [2025-01-09 15:18:17,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:17,094 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 174 transitions. [2025-01-09 15:18:17,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 7.25) internal successors, (58), 11 states have internal predecessors, (58), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (28), 2 states have call predecessors, (28), 5 states have call successors, (28) [2025-01-09 15:18:17,094 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 174 transitions. [2025-01-09 15:18:17,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2025-01-09 15:18:17,094 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:17,095 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:17,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-09 15:18:17,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2025-01-09 15:18:17,295 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:17,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:17,296 INFO L85 PathProgramCache]: Analyzing trace with hash -810147536, now seen corresponding path program 1 times [2025-01-09 15:18:17,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:17,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169085367] [2025-01-09 15:18:17,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:17,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:17,304 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-01-09 15:18:17,309 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-01-09 15:18:17,309 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:17,309 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:17,376 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:18:17,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:17,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169085367] [2025-01-09 15:18:17,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169085367] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:18:17,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:18:17,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 15:18:17,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165785439] [2025-01-09 15:18:17,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:18:17,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 15:18:17,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:17,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 15:18:17,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 15:18:17,379 INFO L87 Difference]: Start difference. First operand 138 states and 174 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-01-09 15:18:17,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:17,435 INFO L93 Difference]: Finished difference Result 355 states and 439 transitions. [2025-01-09 15:18:17,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 15:18:17,436 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2025-01-09 15:18:17,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:17,439 INFO L225 Difference]: With dead ends: 355 [2025-01-09 15:18:17,439 INFO L226 Difference]: Without dead ends: 220 [2025-01-09 15:18:17,439 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 15:18:17,440 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 53 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:17,440 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 506 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 15:18:17,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2025-01-09 15:18:17,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 159. [2025-01-09 15:18:17,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 136 states have (on average 1.2205882352941178) internal successors, (166), 136 states have internal predecessors, (166), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-01-09 15:18:17,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 198 transitions. [2025-01-09 15:18:17,455 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 198 transitions. Word has length 124 [2025-01-09 15:18:17,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:17,458 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 198 transitions. [2025-01-09 15:18:17,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-01-09 15:18:17,459 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 198 transitions. [2025-01-09 15:18:17,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-01-09 15:18:17,460 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:17,460 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:17,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-01-09 15:18:17,460 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:17,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:17,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1964205882, now seen corresponding path program 1 times [2025-01-09 15:18:17,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:17,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786847961] [2025-01-09 15:18:17,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:17,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:17,470 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-01-09 15:18:17,489 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-01-09 15:18:17,489 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:17,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:17,730 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2025-01-09 15:18:17,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:17,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786847961] [2025-01-09 15:18:17,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786847961] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 15:18:17,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258435795] [2025-01-09 15:18:17,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:17,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:18:17,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 15:18:17,736 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 15:18:17,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-09 15:18:17,807 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-01-09 15:18:17,843 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-01-09 15:18:17,843 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:17,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:17,845 INFO L256 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-01-09 15:18:17,847 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 15:18:17,971 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 15:18:17,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 31 [2025-01-09 15:18:18,026 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 15:18:18,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 26 [2025-01-09 15:18:18,029 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 225 proven. 30 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2025-01-09 15:18:18,029 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 15:18:18,201 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2025-01-09 15:18:18,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258435795] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 15:18:18,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 15:18:18,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 12 [2025-01-09 15:18:18,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456716808] [2025-01-09 15:18:18,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 15:18:18,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-09 15:18:18,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:18,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-09 15:18:18,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2025-01-09 15:18:18,203 INFO L87 Difference]: Start difference. First operand 159 states and 198 transitions. Second operand has 12 states, 9 states have (on average 8.0) internal successors, (72), 12 states have internal predecessors, (72), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (28), 2 states have call predecessors, (28), 5 states have call successors, (28) [2025-01-09 15:18:18,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:18,453 INFO L93 Difference]: Finished difference Result 367 states and 455 transitions. [2025-01-09 15:18:18,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-09 15:18:18,454 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 8.0) internal successors, (72), 12 states have internal predecessors, (72), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (28), 2 states have call predecessors, (28), 5 states have call successors, (28) Word has length 125 [2025-01-09 15:18:18,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:18,455 INFO L225 Difference]: With dead ends: 367 [2025-01-09 15:18:18,455 INFO L226 Difference]: Without dead ends: 211 [2025-01-09 15:18:18,456 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 246 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2025-01-09 15:18:18,461 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 139 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:18,461 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 465 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 15:18:18,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2025-01-09 15:18:18,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 159. [2025-01-09 15:18:18,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 136 states have (on average 1.213235294117647) internal successors, (165), 136 states have internal predecessors, (165), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-01-09 15:18:18,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 197 transitions. [2025-01-09 15:18:18,473 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 197 transitions. Word has length 125 [2025-01-09 15:18:18,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:18,474 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 197 transitions. [2025-01-09 15:18:18,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 8.0) internal successors, (72), 12 states have internal predecessors, (72), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (28), 2 states have call predecessors, (28), 5 states have call successors, (28) [2025-01-09 15:18:18,474 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 197 transitions. [2025-01-09 15:18:18,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2025-01-09 15:18:18,476 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:18,476 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:18,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-09 15:18:18,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:18:18,677 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:18,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:18,677 INFO L85 PathProgramCache]: Analyzing trace with hash 2065942149, now seen corresponding path program 1 times [2025-01-09 15:18:18,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:18,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060215795] [2025-01-09 15:18:18,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:18,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:18,687 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 126 statements into 1 equivalence classes. [2025-01-09 15:18:18,722 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 126 of 126 statements. [2025-01-09 15:18:18,722 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:18,722 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 15:18:18,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [813357206] [2025-01-09 15:18:18,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:18,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:18:18,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 15:18:18,726 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 15:18:18,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-09 15:18:18,800 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 126 statements into 1 equivalence classes. [2025-01-09 15:18:18,840 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 126 of 126 statements. [2025-01-09 15:18:18,840 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:18,840 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:18,844 INFO L256 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 15:18:18,847 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 15:18:19,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-01-09 15:18:19,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-01-09 15:18:19,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-01-09 15:18:19,115 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:18:19,116 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 15:18:19,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:19,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060215795] [2025-01-09 15:18:19,117 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 15:18:19,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813357206] [2025-01-09 15:18:19,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813357206] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:18:19,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:18:19,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 15:18:19,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410232687] [2025-01-09 15:18:19,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:18:19,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 15:18:19,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:19,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 15:18:19,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 15:18:19,118 INFO L87 Difference]: Start difference. First operand 159 states and 197 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-01-09 15:18:19,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:19,239 INFO L93 Difference]: Finished difference Result 417 states and 513 transitions. [2025-01-09 15:18:19,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 15:18:19,239 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 126 [2025-01-09 15:18:19,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:19,241 INFO L225 Difference]: With dead ends: 417 [2025-01-09 15:18:19,241 INFO L226 Difference]: Without dead ends: 261 [2025-01-09 15:18:19,241 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-09 15:18:19,241 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 48 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:19,241 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 279 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 15:18:19,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2025-01-09 15:18:19,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 249. [2025-01-09 15:18:19,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 204 states have (on average 1.1715686274509804) internal successors, (239), 204 states have internal predecessors, (239), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2025-01-09 15:18:19,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 303 transitions. [2025-01-09 15:18:19,263 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 303 transitions. Word has length 126 [2025-01-09 15:18:19,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:19,263 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 303 transitions. [2025-01-09 15:18:19,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-01-09 15:18:19,263 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 303 transitions. [2025-01-09 15:18:19,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-01-09 15:18:19,264 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:19,264 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:19,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-09 15:18:19,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:18:19,467 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:19,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:19,467 INFO L85 PathProgramCache]: Analyzing trace with hash -861187360, now seen corresponding path program 1 times [2025-01-09 15:18:19,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:19,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396157361] [2025-01-09 15:18:19,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:19,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:19,483 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-01-09 15:18:19,506 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-01-09 15:18:19,506 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:19,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 15:18:19,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1955298310] [2025-01-09 15:18:19,507 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:19,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:18:19,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 15:18:19,509 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 15:18:19,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-09 15:18:19,586 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-01-09 15:18:19,633 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-01-09 15:18:19,633 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:19,634 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:19,635 INFO L256 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-01-09 15:18:19,638 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 15:18:19,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2025-01-09 15:18:19,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2025-01-09 15:18:19,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2025-01-09 15:18:19,784 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:18:19,785 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 15:18:19,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:19,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396157361] [2025-01-09 15:18:19,785 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 15:18:19,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955298310] [2025-01-09 15:18:19,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955298310] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:18:19,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:18:19,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 15:18:19,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577908023] [2025-01-09 15:18:19,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:18:19,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 15:18:19,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:19,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 15:18:19,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 15:18:19,790 INFO L87 Difference]: Start difference. First operand 249 states and 303 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-01-09 15:18:19,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:19,868 INFO L93 Difference]: Finished difference Result 493 states and 603 transitions. [2025-01-09 15:18:19,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 15:18:19,868 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 127 [2025-01-09 15:18:19,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:19,871 INFO L225 Difference]: With dead ends: 493 [2025-01-09 15:18:19,873 INFO L226 Difference]: Without dead ends: 247 [2025-01-09 15:18:19,873 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-09 15:18:19,876 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 22 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:19,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 277 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 15:18:19,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2025-01-09 15:18:19,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 240. [2025-01-09 15:18:19,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 195 states have (on average 1.1641025641025642) internal successors, (227), 195 states have internal predecessors, (227), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2025-01-09 15:18:19,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 291 transitions. [2025-01-09 15:18:19,896 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 291 transitions. Word has length 127 [2025-01-09 15:18:19,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:19,896 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 291 transitions. [2025-01-09 15:18:19,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-01-09 15:18:19,896 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 291 transitions. [2025-01-09 15:18:19,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-01-09 15:18:19,897 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:19,897 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:19,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-01-09 15:18:20,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:18:20,098 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:20,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:20,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1514792543, now seen corresponding path program 1 times [2025-01-09 15:18:20,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:20,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872297996] [2025-01-09 15:18:20,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:20,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:20,110 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-01-09 15:18:20,148 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 15:18:20,148 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:20,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:20,678 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:18:20,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:20,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872297996] [2025-01-09 15:18:20,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872297996] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:18:20,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:18:20,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-01-09 15:18:20,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748135017] [2025-01-09 15:18:20,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:18:20,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 15:18:20,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:20,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 15:18:20,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-01-09 15:18:20,680 INFO L87 Difference]: Start difference. First operand 240 states and 291 transitions. Second operand has 11 states, 8 states have (on average 6.5) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) [2025-01-09 15:18:21,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:21,151 INFO L93 Difference]: Finished difference Result 520 states and 639 transitions. [2025-01-09 15:18:21,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 15:18:21,152 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 6.5) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) Word has length 129 [2025-01-09 15:18:21,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:21,154 INFO L225 Difference]: With dead ends: 520 [2025-01-09 15:18:21,154 INFO L226 Difference]: Without dead ends: 364 [2025-01-09 15:18:21,154 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-01-09 15:18:21,155 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 85 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:21,155 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 1094 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 15:18:21,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2025-01-09 15:18:21,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 361. [2025-01-09 15:18:21,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 298 states have (on average 1.1845637583892616) internal successors, (353), 299 states have internal predecessors, (353), 44 states have call successors, (44), 18 states have call predecessors, (44), 18 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2025-01-09 15:18:21,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 441 transitions. [2025-01-09 15:18:21,176 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 441 transitions. Word has length 129 [2025-01-09 15:18:21,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:21,176 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 441 transitions. [2025-01-09 15:18:21,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 6.5) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) [2025-01-09 15:18:21,177 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 441 transitions. [2025-01-09 15:18:21,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-01-09 15:18:21,178 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:21,178 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:21,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-01-09 15:18:21,178 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:21,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:21,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1666256968, now seen corresponding path program 1 times [2025-01-09 15:18:21,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:21,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438760898] [2025-01-09 15:18:21,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:21,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:21,195 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-01-09 15:18:21,220 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 15:18:21,220 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:21,220 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:22,035 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:18:22,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:22,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438760898] [2025-01-09 15:18:22,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438760898] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:18:22,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:18:22,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2025-01-09 15:18:22,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403367876] [2025-01-09 15:18:22,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:18:22,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-09 15:18:22,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:22,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-09 15:18:22,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2025-01-09 15:18:22,037 INFO L87 Difference]: Start difference. First operand 361 states and 441 transitions. Second operand has 18 states, 16 states have (on average 3.25) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-01-09 15:18:22,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:22,821 INFO L93 Difference]: Finished difference Result 796 states and 983 transitions. [2025-01-09 15:18:22,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-09 15:18:22,823 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.25) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2025-01-09 15:18:22,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:22,827 INFO L225 Difference]: With dead ends: 796 [2025-01-09 15:18:22,827 INFO L226 Difference]: Without dead ends: 519 [2025-01-09 15:18:22,828 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2025-01-09 15:18:22,828 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 152 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:22,829 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 1469 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-01-09 15:18:22,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2025-01-09 15:18:22,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 396. [2025-01-09 15:18:22,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 333 states have (on average 1.1981981981981982) internal successors, (399), 334 states have internal predecessors, (399), 44 states have call successors, (44), 18 states have call predecessors, (44), 18 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2025-01-09 15:18:22,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 487 transitions. [2025-01-09 15:18:22,878 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 487 transitions. Word has length 129 [2025-01-09 15:18:22,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:22,878 INFO L471 AbstractCegarLoop]: Abstraction has 396 states and 487 transitions. [2025-01-09 15:18:22,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.25) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-01-09 15:18:22,878 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 487 transitions. [2025-01-09 15:18:22,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-01-09 15:18:22,879 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:22,879 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:22,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-01-09 15:18:22,880 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:22,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:22,880 INFO L85 PathProgramCache]: Analyzing trace with hash -2059283978, now seen corresponding path program 1 times [2025-01-09 15:18:22,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:22,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088677174] [2025-01-09 15:18:22,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:22,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:22,895 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-01-09 15:18:22,934 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 15:18:22,934 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:22,934 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:23,580 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:18:23,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:23,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088677174] [2025-01-09 15:18:23,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088677174] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:18:23,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:18:23,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-01-09 15:18:23,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179123378] [2025-01-09 15:18:23,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:18:23,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 15:18:23,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:23,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 15:18:23,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-01-09 15:18:23,581 INFO L87 Difference]: Start difference. First operand 396 states and 487 transitions. Second operand has 10 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-01-09 15:18:23,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:23,917 INFO L93 Difference]: Finished difference Result 829 states and 1022 transitions. [2025-01-09 15:18:23,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 15:18:23,918 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2025-01-09 15:18:23,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:23,920 INFO L225 Difference]: With dead ends: 829 [2025-01-09 15:18:23,920 INFO L226 Difference]: Without dead ends: 517 [2025-01-09 15:18:23,922 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-01-09 15:18:23,922 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 78 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:23,922 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 896 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 15:18:23,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2025-01-09 15:18:23,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 514. [2025-01-09 15:18:23,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 434 states have (on average 1.1889400921658986) internal successors, (516), 436 states have internal predecessors, (516), 54 states have call successors, (54), 25 states have call predecessors, (54), 25 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2025-01-09 15:18:23,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 624 transitions. [2025-01-09 15:18:23,978 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 624 transitions. Word has length 129 [2025-01-09 15:18:23,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:23,978 INFO L471 AbstractCegarLoop]: Abstraction has 514 states and 624 transitions. [2025-01-09 15:18:23,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-01-09 15:18:23,978 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 624 transitions. [2025-01-09 15:18:23,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-01-09 15:18:23,979 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:23,979 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:23,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-01-09 15:18:23,980 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:23,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:23,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1256627105, now seen corresponding path program 1 times [2025-01-09 15:18:23,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:23,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980124331] [2025-01-09 15:18:23,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:23,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:23,989 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-01-09 15:18:24,013 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 15:18:24,013 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:24,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:24,217 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:18:24,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:24,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980124331] [2025-01-09 15:18:24,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980124331] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:18:24,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:18:24,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 15:18:24,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469953833] [2025-01-09 15:18:24,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:18:24,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 15:18:24,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:24,218 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 15:18:24,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 15:18:24,218 INFO L87 Difference]: Start difference. First operand 514 states and 624 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-01-09 15:18:24,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:24,438 INFO L93 Difference]: Finished difference Result 1246 states and 1502 transitions. [2025-01-09 15:18:24,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 15:18:24,439 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 129 [2025-01-09 15:18:24,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:24,444 INFO L225 Difference]: With dead ends: 1246 [2025-01-09 15:18:24,444 INFO L226 Difference]: Without dead ends: 816 [2025-01-09 15:18:24,446 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-01-09 15:18:24,446 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 65 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:24,446 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 506 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 15:18:24,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2025-01-09 15:18:24,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 567. [2025-01-09 15:18:24,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 471 states have (on average 1.1825902335456475) internal successors, (557), 474 states have internal predecessors, (557), 64 states have call successors, (64), 31 states have call predecessors, (64), 31 states have return successors, (64), 61 states have call predecessors, (64), 64 states have call successors, (64) [2025-01-09 15:18:24,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 685 transitions. [2025-01-09 15:18:24,500 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 685 transitions. Word has length 129 [2025-01-09 15:18:24,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:24,500 INFO L471 AbstractCegarLoop]: Abstraction has 567 states and 685 transitions. [2025-01-09 15:18:24,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-01-09 15:18:24,501 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 685 transitions. [2025-01-09 15:18:24,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-01-09 15:18:24,501 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:24,502 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:24,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-01-09 15:18:24,502 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:24,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:24,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1649654115, now seen corresponding path program 1 times [2025-01-09 15:18:24,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:24,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477804867] [2025-01-09 15:18:24,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:24,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:24,512 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-01-09 15:18:24,537 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 15:18:24,537 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:24,537 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:24,948 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:18:24,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:24,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477804867] [2025-01-09 15:18:24,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477804867] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:18:24,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:18:24,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-01-09 15:18:24,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930920438] [2025-01-09 15:18:24,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:18:24,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 15:18:24,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:24,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 15:18:24,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-01-09 15:18:24,950 INFO L87 Difference]: Start difference. First operand 567 states and 685 transitions. Second operand has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-01-09 15:18:25,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:25,218 INFO L93 Difference]: Finished difference Result 1074 states and 1298 transitions. [2025-01-09 15:18:25,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 15:18:25,218 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2025-01-09 15:18:25,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:25,221 INFO L225 Difference]: With dead ends: 1074 [2025-01-09 15:18:25,221 INFO L226 Difference]: Without dead ends: 636 [2025-01-09 15:18:25,222 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-01-09 15:18:25,222 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 79 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:25,222 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 767 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 15:18:25,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2025-01-09 15:18:25,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 557. [2025-01-09 15:18:25,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 461 states have (on average 1.1605206073752712) internal successors, (535), 464 states have internal predecessors, (535), 64 states have call successors, (64), 31 states have call predecessors, (64), 31 states have return successors, (64), 61 states have call predecessors, (64), 64 states have call successors, (64) [2025-01-09 15:18:25,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 663 transitions. [2025-01-09 15:18:25,256 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 663 transitions. Word has length 129 [2025-01-09 15:18:25,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:25,257 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 663 transitions. [2025-01-09 15:18:25,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-01-09 15:18:25,257 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 663 transitions. [2025-01-09 15:18:25,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-01-09 15:18:25,258 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:25,258 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:25,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-01-09 15:18:25,258 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:25,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:25,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1800270474, now seen corresponding path program 1 times [2025-01-09 15:18:25,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:25,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075908583] [2025-01-09 15:18:25,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:25,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:25,269 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-01-09 15:18:25,282 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 15:18:25,282 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:25,282 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:25,407 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:18:25,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:25,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075908583] [2025-01-09 15:18:25,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075908583] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:18:25,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:18:25,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 15:18:25,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758675936] [2025-01-09 15:18:25,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:18:25,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 15:18:25,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:25,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 15:18:25,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 15:18:25,409 INFO L87 Difference]: Start difference. First operand 557 states and 663 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-01-09 15:18:25,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:25,600 INFO L93 Difference]: Finished difference Result 1025 states and 1224 transitions. [2025-01-09 15:18:25,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 15:18:25,601 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 129 [2025-01-09 15:18:25,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:25,604 INFO L225 Difference]: With dead ends: 1025 [2025-01-09 15:18:25,604 INFO L226 Difference]: Without dead ends: 597 [2025-01-09 15:18:25,605 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 15:18:25,605 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 89 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:25,606 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 515 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 15:18:25,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2025-01-09 15:18:25,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 518. [2025-01-09 15:18:25,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 422 states have (on average 1.1563981042654028) internal successors, (488), 425 states have internal predecessors, (488), 64 states have call successors, (64), 31 states have call predecessors, (64), 31 states have return successors, (64), 61 states have call predecessors, (64), 64 states have call successors, (64) [2025-01-09 15:18:25,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 616 transitions. [2025-01-09 15:18:25,653 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 616 transitions. Word has length 129 [2025-01-09 15:18:25,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:25,654 INFO L471 AbstractCegarLoop]: Abstraction has 518 states and 616 transitions. [2025-01-09 15:18:25,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-01-09 15:18:25,654 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 616 transitions. [2025-01-09 15:18:25,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-01-09 15:18:25,655 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:25,656 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:25,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-01-09 15:18:25,656 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:25,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:25,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1019922486, now seen corresponding path program 1 times [2025-01-09 15:18:25,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:25,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813914034] [2025-01-09 15:18:25,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:25,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:25,666 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-01-09 15:18:25,694 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 15:18:25,694 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:25,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:26,246 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:18:26,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:26,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813914034] [2025-01-09 15:18:26,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813914034] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:18:26,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:18:26,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2025-01-09 15:18:26,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787170858] [2025-01-09 15:18:26,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:18:26,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 15:18:26,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:26,248 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 15:18:26,248 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2025-01-09 15:18:26,248 INFO L87 Difference]: Start difference. First operand 518 states and 616 transitions. Second operand has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 17 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-01-09 15:18:26,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:26,915 INFO L93 Difference]: Finished difference Result 1172 states and 1406 transitions. [2025-01-09 15:18:26,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-01-09 15:18:26,916 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 17 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2025-01-09 15:18:26,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:26,918 INFO L225 Difference]: With dead ends: 1172 [2025-01-09 15:18:26,918 INFO L226 Difference]: Without dead ends: 783 [2025-01-09 15:18:26,919 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2025-01-09 15:18:26,920 INFO L435 NwaCegarLoop]: 171 mSDtfsCounter, 89 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 2058 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:26,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 2058 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 15:18:26,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2025-01-09 15:18:26,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 762. [2025-01-09 15:18:26,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 632 states have (on average 1.1708860759493671) internal successors, (740), 637 states have internal predecessors, (740), 86 states have call successors, (86), 43 states have call predecessors, (86), 43 states have return successors, (86), 81 states have call predecessors, (86), 86 states have call successors, (86) [2025-01-09 15:18:26,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 912 transitions. [2025-01-09 15:18:26,967 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 912 transitions. Word has length 129 [2025-01-09 15:18:26,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:26,967 INFO L471 AbstractCegarLoop]: Abstraction has 762 states and 912 transitions. [2025-01-09 15:18:26,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 17 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-01-09 15:18:26,967 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 912 transitions. [2025-01-09 15:18:26,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-01-09 15:18:26,968 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:26,969 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:26,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-01-09 15:18:26,969 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:26,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:26,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1412949496, now seen corresponding path program 1 times [2025-01-09 15:18:26,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:26,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591963411] [2025-01-09 15:18:26,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:26,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:26,978 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-01-09 15:18:26,990 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 15:18:26,990 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:26,990 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:27,311 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:18:27,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:27,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591963411] [2025-01-09 15:18:27,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591963411] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:18:27,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:18:27,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-09 15:18:27,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332653500] [2025-01-09 15:18:27,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:18:27,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 15:18:27,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:27,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 15:18:27,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-01-09 15:18:27,313 INFO L87 Difference]: Start difference. First operand 762 states and 912 transitions. Second operand has 9 states, 8 states have (on average 6.5) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2025-01-09 15:18:27,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:27,728 INFO L93 Difference]: Finished difference Result 1891 states and 2246 transitions. [2025-01-09 15:18:27,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 15:18:27,729 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 129 [2025-01-09 15:18:27,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:27,733 INFO L225 Difference]: With dead ends: 1891 [2025-01-09 15:18:27,734 INFO L226 Difference]: Without dead ends: 1258 [2025-01-09 15:18:27,735 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-01-09 15:18:27,735 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 144 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:27,735 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 868 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 15:18:27,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2025-01-09 15:18:27,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 726. [2025-01-09 15:18:27,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 596 states have (on average 1.1543624161073827) internal successors, (688), 601 states have internal predecessors, (688), 86 states have call successors, (86), 43 states have call predecessors, (86), 43 states have return successors, (86), 81 states have call predecessors, (86), 86 states have call successors, (86) [2025-01-09 15:18:27,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 860 transitions. [2025-01-09 15:18:27,786 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 860 transitions. Word has length 129 [2025-01-09 15:18:27,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:27,786 INFO L471 AbstractCegarLoop]: Abstraction has 726 states and 860 transitions. [2025-01-09 15:18:27,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2025-01-09 15:18:27,786 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 860 transitions. [2025-01-09 15:18:27,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-01-09 15:18:27,787 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:27,787 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:27,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-01-09 15:18:27,787 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:27,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:27,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1171386911, now seen corresponding path program 1 times [2025-01-09 15:18:27,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:27,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368142764] [2025-01-09 15:18:27,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:27,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:27,796 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-01-09 15:18:27,811 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 15:18:27,811 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:27,811 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:28,615 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:18:28,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:28,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368142764] [2025-01-09 15:18:28,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368142764] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:18:28,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:18:28,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-01-09 15:18:28,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2148344] [2025-01-09 15:18:28,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:18:28,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-09 15:18:28,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:28,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-09 15:18:28,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2025-01-09 15:18:28,618 INFO L87 Difference]: Start difference. First operand 726 states and 860 transitions. Second operand has 12 states, 8 states have (on average 6.5) internal successors, (52), 12 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 5 states have call successors, (16) [2025-01-09 15:18:29,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:29,209 INFO L93 Difference]: Finished difference Result 1499 states and 1774 transitions. [2025-01-09 15:18:29,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-09 15:18:29,209 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 8 states have (on average 6.5) internal successors, (52), 12 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 5 states have call successors, (16) Word has length 129 [2025-01-09 15:18:29,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:29,212 INFO L225 Difference]: With dead ends: 1499 [2025-01-09 15:18:29,212 INFO L226 Difference]: Without dead ends: 902 [2025-01-09 15:18:29,213 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2025-01-09 15:18:29,214 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 78 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:29,214 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 1018 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 15:18:29,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2025-01-09 15:18:29,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 740. [2025-01-09 15:18:29,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 607 states have (on average 1.1482701812191103) internal successors, (697), 612 states have internal predecessors, (697), 88 states have call successors, (88), 44 states have call predecessors, (88), 44 states have return successors, (88), 83 states have call predecessors, (88), 88 states have call successors, (88) [2025-01-09 15:18:29,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 873 transitions. [2025-01-09 15:18:29,281 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 873 transitions. Word has length 129 [2025-01-09 15:18:29,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:29,282 INFO L471 AbstractCegarLoop]: Abstraction has 740 states and 873 transitions. [2025-01-09 15:18:29,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 8 states have (on average 6.5) internal successors, (52), 12 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 5 states have call successors, (16) [2025-01-09 15:18:29,282 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 873 transitions. [2025-01-09 15:18:29,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-01-09 15:18:29,284 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:29,284 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:29,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-01-09 15:18:29,284 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:29,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:29,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1153935992, now seen corresponding path program 1 times [2025-01-09 15:18:29,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:29,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535443742] [2025-01-09 15:18:29,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:29,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:29,298 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-01-09 15:18:29,310 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 15:18:29,310 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:29,310 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:29,598 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:18:29,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:29,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535443742] [2025-01-09 15:18:29,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535443742] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:18:29,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:18:29,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 15:18:29,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135510278] [2025-01-09 15:18:29,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:18:29,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 15:18:29,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:29,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 15:18:29,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 15:18:29,600 INFO L87 Difference]: Start difference. First operand 740 states and 873 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2025-01-09 15:18:29,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:29,822 INFO L93 Difference]: Finished difference Result 1306 states and 1546 transitions. [2025-01-09 15:18:29,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 15:18:29,823 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 129 [2025-01-09 15:18:29,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:29,825 INFO L225 Difference]: With dead ends: 1306 [2025-01-09 15:18:29,825 INFO L226 Difference]: Without dead ends: 703 [2025-01-09 15:18:29,826 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-01-09 15:18:29,827 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 86 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:29,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 635 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 15:18:29,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2025-01-09 15:18:29,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 701. [2025-01-09 15:18:29,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 568 states have (on average 1.1443661971830985) internal successors, (650), 573 states have internal predecessors, (650), 88 states have call successors, (88), 44 states have call predecessors, (88), 44 states have return successors, (88), 83 states have call predecessors, (88), 88 states have call successors, (88) [2025-01-09 15:18:29,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 826 transitions. [2025-01-09 15:18:29,882 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 826 transitions. Word has length 129 [2025-01-09 15:18:29,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:29,882 INFO L471 AbstractCegarLoop]: Abstraction has 701 states and 826 transitions. [2025-01-09 15:18:29,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2025-01-09 15:18:29,882 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 826 transitions. [2025-01-09 15:18:29,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-01-09 15:18:29,883 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:29,883 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:29,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-01-09 15:18:29,884 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:29,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:29,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1452752929, now seen corresponding path program 1 times [2025-01-09 15:18:29,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:29,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430971115] [2025-01-09 15:18:29,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:29,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:29,895 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-01-09 15:18:29,909 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 15:18:29,909 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:29,909 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:30,124 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:18:30,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:30,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430971115] [2025-01-09 15:18:30,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430971115] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:18:30,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:18:30,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 15:18:30,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200356922] [2025-01-09 15:18:30,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:18:30,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 15:18:30,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:30,126 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 15:18:30,126 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 15:18:30,126 INFO L87 Difference]: Start difference. First operand 701 states and 826 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-01-09 15:18:30,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:30,258 INFO L93 Difference]: Finished difference Result 1265 states and 1497 transitions. [2025-01-09 15:18:30,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 15:18:30,259 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 129 [2025-01-09 15:18:30,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:30,261 INFO L225 Difference]: With dead ends: 1265 [2025-01-09 15:18:30,261 INFO L226 Difference]: Without dead ends: 701 [2025-01-09 15:18:30,262 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 15:18:30,264 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 0 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:30,264 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 403 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 15:18:30,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2025-01-09 15:18:30,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 701. [2025-01-09 15:18:30,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 568 states have (on average 1.142605633802817) internal successors, (649), 573 states have internal predecessors, (649), 88 states have call successors, (88), 44 states have call predecessors, (88), 44 states have return successors, (88), 83 states have call predecessors, (88), 88 states have call successors, (88) [2025-01-09 15:18:30,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 825 transitions. [2025-01-09 15:18:30,330 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 825 transitions. Word has length 129 [2025-01-09 15:18:30,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:30,330 INFO L471 AbstractCegarLoop]: Abstraction has 701 states and 825 transitions. [2025-01-09 15:18:30,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-01-09 15:18:30,331 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 825 transitions. [2025-01-09 15:18:30,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-01-09 15:18:30,335 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:30,336 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:30,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-01-09 15:18:30,336 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:30,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:30,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1586766435, now seen corresponding path program 1 times [2025-01-09 15:18:30,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:30,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693856146] [2025-01-09 15:18:30,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:30,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:30,364 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-01-09 15:18:30,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 15:18:30,402 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:30,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:31,215 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:18:31,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:31,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693856146] [2025-01-09 15:18:31,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693856146] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:18:31,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:18:31,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-01-09 15:18:31,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446134743] [2025-01-09 15:18:31,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:18:31,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 15:18:31,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:31,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 15:18:31,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-01-09 15:18:31,217 INFO L87 Difference]: Start difference. First operand 701 states and 825 transitions. Second operand has 11 states, 8 states have (on average 6.5) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) [2025-01-09 15:18:31,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:31,944 INFO L93 Difference]: Finished difference Result 1446 states and 1710 transitions. [2025-01-09 15:18:31,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 15:18:31,945 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 6.5) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) Word has length 129 [2025-01-09 15:18:31,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:31,948 INFO L225 Difference]: With dead ends: 1446 [2025-01-09 15:18:31,948 INFO L226 Difference]: Without dead ends: 882 [2025-01-09 15:18:31,949 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-01-09 15:18:31,950 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 76 mSDsluCounter, 1052 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:31,950 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 1229 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-01-09 15:18:31,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2025-01-09 15:18:32,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 733. [2025-01-09 15:18:32,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 600 states have (on average 1.1466666666666667) internal successors, (688), 605 states have internal predecessors, (688), 88 states have call successors, (88), 44 states have call predecessors, (88), 44 states have return successors, (88), 83 states have call predecessors, (88), 88 states have call successors, (88) [2025-01-09 15:18:32,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 864 transitions. [2025-01-09 15:18:32,028 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 864 transitions. Word has length 129 [2025-01-09 15:18:32,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:32,028 INFO L471 AbstractCegarLoop]: Abstraction has 733 states and 864 transitions. [2025-01-09 15:18:32,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 6.5) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) [2025-01-09 15:18:32,028 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 864 transitions. [2025-01-09 15:18:32,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-01-09 15:18:32,029 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:32,029 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:32,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-01-09 15:18:32,030 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:32,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:32,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1738230860, now seen corresponding path program 1 times [2025-01-09 15:18:32,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:32,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12010224] [2025-01-09 15:18:32,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:32,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:32,041 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-01-09 15:18:32,058 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 15:18:32,058 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:32,058 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:32,502 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:18:32,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:32,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12010224] [2025-01-09 15:18:32,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12010224] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:18:32,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:18:32,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-01-09 15:18:32,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366088295] [2025-01-09 15:18:32,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:18:32,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 15:18:32,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:32,503 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 15:18:32,503 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-01-09 15:18:32,503 INFO L87 Difference]: Start difference. First operand 733 states and 864 transitions. Second operand has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-01-09 15:18:32,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:32,887 INFO L93 Difference]: Finished difference Result 1386 states and 1634 transitions. [2025-01-09 15:18:32,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 15:18:32,888 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2025-01-09 15:18:32,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:32,891 INFO L225 Difference]: With dead ends: 1386 [2025-01-09 15:18:32,891 INFO L226 Difference]: Without dead ends: 790 [2025-01-09 15:18:32,892 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-01-09 15:18:32,892 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 80 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:32,892 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 741 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 15:18:32,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2025-01-09 15:18:32,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 551. [2025-01-09 15:18:32,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 452 states have (on average 1.1349557522123894) internal successors, (513), 455 states have internal predecessors, (513), 66 states have call successors, (66), 32 states have call predecessors, (66), 32 states have return successors, (66), 63 states have call predecessors, (66), 66 states have call successors, (66) [2025-01-09 15:18:32,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 645 transitions. [2025-01-09 15:18:32,937 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 645 transitions. Word has length 129 [2025-01-09 15:18:32,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:32,937 INFO L471 AbstractCegarLoop]: Abstraction has 551 states and 645 transitions. [2025-01-09 15:18:32,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-01-09 15:18:32,937 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 645 transitions. [2025-01-09 15:18:32,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-01-09 15:18:32,938 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:32,938 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:32,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-01-09 15:18:32,938 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:32,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:32,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1721628007, now seen corresponding path program 1 times [2025-01-09 15:18:32,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:32,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822066012] [2025-01-09 15:18:32,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:32,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:32,951 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-01-09 15:18:32,964 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 15:18:32,964 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:32,964 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:33,370 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:18:33,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:33,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822066012] [2025-01-09 15:18:33,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822066012] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:18:33,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:18:33,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-01-09 15:18:33,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693082517] [2025-01-09 15:18:33,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:18:33,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 15:18:33,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:33,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 15:18:33,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-01-09 15:18:33,371 INFO L87 Difference]: Start difference. First operand 551 states and 645 transitions. Second operand has 10 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-01-09 15:18:33,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:33,803 INFO L93 Difference]: Finished difference Result 1076 states and 1266 transitions. [2025-01-09 15:18:33,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 15:18:33,810 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2025-01-09 15:18:33,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:33,813 INFO L225 Difference]: With dead ends: 1076 [2025-01-09 15:18:33,813 INFO L226 Difference]: Without dead ends: 662 [2025-01-09 15:18:33,814 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2025-01-09 15:18:33,814 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 72 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:33,815 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 1112 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 15:18:33,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2025-01-09 15:18:33,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 577. [2025-01-09 15:18:33,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 478 states have (on average 1.1380753138075315) internal successors, (544), 481 states have internal predecessors, (544), 66 states have call successors, (66), 32 states have call predecessors, (66), 32 states have return successors, (66), 63 states have call predecessors, (66), 66 states have call successors, (66) [2025-01-09 15:18:33,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 676 transitions. [2025-01-09 15:18:33,862 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 676 transitions. Word has length 129 [2025-01-09 15:18:33,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:33,862 INFO L471 AbstractCegarLoop]: Abstraction has 577 states and 676 transitions. [2025-01-09 15:18:33,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-01-09 15:18:33,862 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 676 transitions. [2025-01-09 15:18:33,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-01-09 15:18:33,863 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:33,863 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:33,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-01-09 15:18:33,863 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:33,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:33,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1480065422, now seen corresponding path program 1 times [2025-01-09 15:18:33,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:33,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851401716] [2025-01-09 15:18:33,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:33,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:33,873 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-01-09 15:18:33,884 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 15:18:33,884 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:33,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:34,067 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:18:34,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:34,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851401716] [2025-01-09 15:18:34,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851401716] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:18:34,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:18:34,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 15:18:34,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695151625] [2025-01-09 15:18:34,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:18:34,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 15:18:34,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:34,068 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 15:18:34,068 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 15:18:34,068 INFO L87 Difference]: Start difference. First operand 577 states and 676 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-01-09 15:18:34,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:34,353 INFO L93 Difference]: Finished difference Result 1149 states and 1348 transitions. [2025-01-09 15:18:34,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 15:18:34,353 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 129 [2025-01-09 15:18:34,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:34,356 INFO L225 Difference]: With dead ends: 1149 [2025-01-09 15:18:34,356 INFO L226 Difference]: Without dead ends: 709 [2025-01-09 15:18:34,357 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-01-09 15:18:34,357 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 64 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:34,357 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 508 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 15:18:34,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2025-01-09 15:18:34,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 577. [2025-01-09 15:18:34,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 478 states have (on average 1.1297071129707112) internal successors, (540), 481 states have internal predecessors, (540), 66 states have call successors, (66), 32 states have call predecessors, (66), 32 states have return successors, (66), 63 states have call predecessors, (66), 66 states have call successors, (66) [2025-01-09 15:18:34,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 672 transitions. [2025-01-09 15:18:34,435 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 672 transitions. Word has length 129 [2025-01-09 15:18:34,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:34,435 INFO L471 AbstractCegarLoop]: Abstraction has 577 states and 672 transitions. [2025-01-09 15:18:34,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-01-09 15:18:34,435 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 672 transitions. [2025-01-09 15:18:34,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-01-09 15:18:34,436 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:34,436 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:34,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-01-09 15:18:34,437 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:34,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:34,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1873092432, now seen corresponding path program 1 times [2025-01-09 15:18:34,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:34,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283549947] [2025-01-09 15:18:34,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:34,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:34,448 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-01-09 15:18:34,472 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 15:18:34,473 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:34,473 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:34,980 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:18:34,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:34,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283549947] [2025-01-09 15:18:34,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283549947] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:18:34,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:18:34,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2025-01-09 15:18:34,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166159473] [2025-01-09 15:18:34,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:18:34,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 15:18:34,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:34,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 15:18:34,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2025-01-09 15:18:34,981 INFO L87 Difference]: Start difference. First operand 577 states and 672 transitions. Second operand has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 17 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-01-09 15:18:35,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:35,601 INFO L93 Difference]: Finished difference Result 1108 states and 1291 transitions. [2025-01-09 15:18:35,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-01-09 15:18:35,601 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 17 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2025-01-09 15:18:35,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:35,603 INFO L225 Difference]: With dead ends: 1108 [2025-01-09 15:18:35,603 INFO L226 Difference]: Without dead ends: 668 [2025-01-09 15:18:35,604 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2025-01-09 15:18:35,604 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 70 mSDsluCounter, 1813 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:35,604 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 1983 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 15:18:35,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2025-01-09 15:18:35,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 583. [2025-01-09 15:18:35,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 484 states have (on average 1.128099173553719) internal successors, (546), 487 states have internal predecessors, (546), 66 states have call successors, (66), 32 states have call predecessors, (66), 32 states have return successors, (66), 63 states have call predecessors, (66), 66 states have call successors, (66) [2025-01-09 15:18:35,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 678 transitions. [2025-01-09 15:18:35,650 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 678 transitions. Word has length 129 [2025-01-09 15:18:35,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:35,650 INFO L471 AbstractCegarLoop]: Abstraction has 583 states and 678 transitions. [2025-01-09 15:18:35,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 17 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-01-09 15:18:35,650 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 678 transitions. [2025-01-09 15:18:35,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-01-09 15:18:35,651 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:35,651 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:35,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-01-09 15:18:35,652 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:35,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:35,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1092744444, now seen corresponding path program 1 times [2025-01-09 15:18:35,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:35,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332240901] [2025-01-09 15:18:35,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:35,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:35,660 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-01-09 15:18:35,673 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 15:18:35,673 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:35,673 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:35,821 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:18:35,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:35,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332240901] [2025-01-09 15:18:35,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332240901] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:18:35,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:18:35,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 15:18:35,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433897044] [2025-01-09 15:18:35,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:18:35,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 15:18:35,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:35,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 15:18:35,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 15:18:35,823 INFO L87 Difference]: Start difference. First operand 583 states and 678 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2025-01-09 15:18:36,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:36,007 INFO L93 Difference]: Finished difference Result 989 states and 1151 transitions. [2025-01-09 15:18:36,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 15:18:36,007 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 129 [2025-01-09 15:18:36,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:36,009 INFO L225 Difference]: With dead ends: 989 [2025-01-09 15:18:36,009 INFO L226 Difference]: Without dead ends: 543 [2025-01-09 15:18:36,010 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-01-09 15:18:36,010 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 89 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:36,010 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 565 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 15:18:36,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2025-01-09 15:18:36,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 540. [2025-01-09 15:18:36,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 441 states have (on average 1.1179138321995465) internal successors, (493), 444 states have internal predecessors, (493), 66 states have call successors, (66), 32 states have call predecessors, (66), 32 states have return successors, (66), 63 states have call predecessors, (66), 66 states have call successors, (66) [2025-01-09 15:18:36,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 625 transitions. [2025-01-09 15:18:36,056 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 625 transitions. Word has length 129 [2025-01-09 15:18:36,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:36,056 INFO L471 AbstractCegarLoop]: Abstraction has 540 states and 625 transitions. [2025-01-09 15:18:36,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2025-01-09 15:18:36,057 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 625 transitions. [2025-01-09 15:18:36,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-01-09 15:18:36,057 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:36,057 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:36,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-01-09 15:18:36,058 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:36,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:36,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1226757950, now seen corresponding path program 1 times [2025-01-09 15:18:36,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:36,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104459867] [2025-01-09 15:18:36,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:36,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:36,070 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-01-09 15:18:36,097 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 15:18:36,098 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:36,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:37,281 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:18:37,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:37,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104459867] [2025-01-09 15:18:37,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104459867] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:18:37,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:18:37,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2025-01-09 15:18:37,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900018886] [2025-01-09 15:18:37,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:18:37,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-09 15:18:37,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:37,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-09 15:18:37,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2025-01-09 15:18:37,283 INFO L87 Difference]: Start difference. First operand 540 states and 625 transitions. Second operand has 20 states, 16 states have (on average 3.25) internal successors, (52), 20 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 5 states have call successors, (16) [2025-01-09 15:18:38,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:38,513 INFO L93 Difference]: Finished difference Result 1036 states and 1199 transitions. [2025-01-09 15:18:38,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-09 15:18:38,514 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 3.25) internal successors, (52), 20 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 5 states have call successors, (16) Word has length 129 [2025-01-09 15:18:38,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:38,516 INFO L225 Difference]: With dead ends: 1036 [2025-01-09 15:18:38,516 INFO L226 Difference]: Without dead ends: 633 [2025-01-09 15:18:38,517 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2025-01-09 15:18:38,521 INFO L435 NwaCegarLoop]: 169 mSDtfsCounter, 80 mSDsluCounter, 2184 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 2353 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:38,521 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 2353 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-01-09 15:18:38,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2025-01-09 15:18:38,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 540. [2025-01-09 15:18:38,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 441 states have (on average 1.1179138321995465) internal successors, (493), 444 states have internal predecessors, (493), 66 states have call successors, (66), 32 states have call predecessors, (66), 32 states have return successors, (66), 63 states have call predecessors, (66), 66 states have call successors, (66) [2025-01-09 15:18:38,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 625 transitions. [2025-01-09 15:18:38,594 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 625 transitions. Word has length 129 [2025-01-09 15:18:38,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:38,594 INFO L471 AbstractCegarLoop]: Abstraction has 540 states and 625 transitions. [2025-01-09 15:18:38,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 3.25) internal successors, (52), 20 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 5 states have call successors, (16) [2025-01-09 15:18:38,594 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 625 transitions. [2025-01-09 15:18:38,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-01-09 15:18:38,595 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:38,595 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:38,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-01-09 15:18:38,596 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:38,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:38,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1378222375, now seen corresponding path program 1 times [2025-01-09 15:18:38,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:38,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748195615] [2025-01-09 15:18:38,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:38,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:38,608 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-01-09 15:18:38,619 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 15:18:38,619 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:38,619 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:39,087 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:18:39,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:39,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748195615] [2025-01-09 15:18:39,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748195615] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:18:39,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:18:39,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-01-09 15:18:39,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091155700] [2025-01-09 15:18:39,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:18:39,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 15:18:39,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:39,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 15:18:39,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-01-09 15:18:39,088 INFO L87 Difference]: Start difference. First operand 540 states and 625 transitions. Second operand has 11 states, 8 states have (on average 6.5) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) [2025-01-09 15:18:39,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:39,594 INFO L93 Difference]: Finished difference Result 1006 states and 1165 transitions. [2025-01-09 15:18:39,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 15:18:39,594 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 6.5) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) Word has length 129 [2025-01-09 15:18:39,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:39,596 INFO L225 Difference]: With dead ends: 1006 [2025-01-09 15:18:39,596 INFO L226 Difference]: Without dead ends: 603 [2025-01-09 15:18:39,597 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-01-09 15:18:39,598 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 72 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:39,598 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 1002 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 15:18:39,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2025-01-09 15:18:39,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 528. [2025-01-09 15:18:39,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 429 states have (on average 1.1118881118881119) internal successors, (477), 432 states have internal predecessors, (477), 66 states have call successors, (66), 32 states have call predecessors, (66), 32 states have return successors, (66), 63 states have call predecessors, (66), 66 states have call successors, (66) [2025-01-09 15:18:39,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 609 transitions. [2025-01-09 15:18:39,702 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 609 transitions. Word has length 129 [2025-01-09 15:18:39,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:39,707 INFO L471 AbstractCegarLoop]: Abstraction has 528 states and 609 transitions. [2025-01-09 15:18:39,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 6.5) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) [2025-01-09 15:18:39,707 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 609 transitions. [2025-01-09 15:18:39,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-01-09 15:18:39,707 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:39,707 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:39,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-01-09 15:18:39,708 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:39,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:39,708 INFO L85 PathProgramCache]: Analyzing trace with hash -788044106, now seen corresponding path program 1 times [2025-01-09 15:18:39,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:39,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922275902] [2025-01-09 15:18:39,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:39,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:39,721 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-01-09 15:18:39,733 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-01-09 15:18:39,733 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:39,733 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:39,794 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:18:39,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:39,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922275902] [2025-01-09 15:18:39,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922275902] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:18:39,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:18:39,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 15:18:39,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698433408] [2025-01-09 15:18:39,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:18:39,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 15:18:39,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:39,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 15:18:39,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 15:18:39,796 INFO L87 Difference]: Start difference. First operand 528 states and 609 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-01-09 15:18:39,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:39,884 INFO L93 Difference]: Finished difference Result 921 states and 1064 transitions. [2025-01-09 15:18:39,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 15:18:39,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 131 [2025-01-09 15:18:39,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:39,886 INFO L225 Difference]: With dead ends: 921 [2025-01-09 15:18:39,887 INFO L226 Difference]: Without dead ends: 530 [2025-01-09 15:18:39,887 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 15:18:39,887 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 66 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:39,888 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 465 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 15:18:39,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2025-01-09 15:18:39,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 528. [2025-01-09 15:18:39,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 429 states have (on average 1.0932400932400932) internal successors, (469), 432 states have internal predecessors, (469), 66 states have call successors, (66), 32 states have call predecessors, (66), 32 states have return successors, (66), 63 states have call predecessors, (66), 66 states have call successors, (66) [2025-01-09 15:18:39,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 601 transitions. [2025-01-09 15:18:39,939 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 601 transitions. Word has length 131 [2025-01-09 15:18:39,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:39,939 INFO L471 AbstractCegarLoop]: Abstraction has 528 states and 601 transitions. [2025-01-09 15:18:39,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-01-09 15:18:39,940 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 601 transitions. [2025-01-09 15:18:39,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2025-01-09 15:18:39,940 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:39,940 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:39,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2025-01-09 15:18:39,941 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:39,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:39,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1307419765, now seen corresponding path program 1 times [2025-01-09 15:18:39,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:39,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878956672] [2025-01-09 15:18:39,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:39,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:39,955 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-01-09 15:18:39,996 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-01-09 15:18:39,996 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:39,996 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:40,240 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 78 proven. 6 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2025-01-09 15:18:40,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:40,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878956672] [2025-01-09 15:18:40,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878956672] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 15:18:40,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708347181] [2025-01-09 15:18:40,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:40,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:18:40,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 15:18:40,243 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 15:18:40,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-09 15:18:40,347 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-01-09 15:18:40,445 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-01-09 15:18:40,446 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:40,446 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:40,448 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-01-09 15:18:40,451 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 15:18:40,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-01-09 15:18:40,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-01-09 15:18:40,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2025-01-09 15:18:40,572 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 15:18:40,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2025-01-09 15:18:40,704 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 149 proven. 6 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2025-01-09 15:18:40,705 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 15:18:41,009 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 78 proven. 9 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2025-01-09 15:18:41,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708347181] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 15:18:41,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 15:18:41,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 23 [2025-01-09 15:18:41,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058856847] [2025-01-09 15:18:41,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 15:18:41,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-09 15:18:41,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:41,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-09 15:18:41,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2025-01-09 15:18:41,010 INFO L87 Difference]: Start difference. First operand 528 states and 601 transitions. Second operand has 23 states, 19 states have (on average 6.473684210526316) internal successors, (123), 22 states have internal predecessors, (123), 7 states have call successors, (20), 3 states have call predecessors, (20), 6 states have return successors, (20), 4 states have call predecessors, (20), 7 states have call successors, (20) [2025-01-09 15:18:41,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:41,477 INFO L93 Difference]: Finished difference Result 925 states and 1046 transitions. [2025-01-09 15:18:41,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-01-09 15:18:41,478 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 6.473684210526316) internal successors, (123), 22 states have internal predecessors, (123), 7 states have call successors, (20), 3 states have call predecessors, (20), 6 states have return successors, (20), 4 states have call predecessors, (20), 7 states have call successors, (20) Word has length 136 [2025-01-09 15:18:41,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:41,480 INFO L225 Difference]: With dead ends: 925 [2025-01-09 15:18:41,480 INFO L226 Difference]: Without dead ends: 534 [2025-01-09 15:18:41,481 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 259 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=201, Invalid=729, Unknown=0, NotChecked=0, Total=930 [2025-01-09 15:18:41,481 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 127 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:41,482 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 649 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 15:18:41,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2025-01-09 15:18:41,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 512. [2025-01-09 15:18:41,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 409 states have (on average 1.0880195599022005) internal successors, (445), 412 states have internal predecessors, (445), 66 states have call successors, (66), 36 states have call predecessors, (66), 36 states have return successors, (66), 63 states have call predecessors, (66), 66 states have call successors, (66) [2025-01-09 15:18:41,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 577 transitions. [2025-01-09 15:18:41,537 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 577 transitions. Word has length 136 [2025-01-09 15:18:41,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:41,538 INFO L471 AbstractCegarLoop]: Abstraction has 512 states and 577 transitions. [2025-01-09 15:18:41,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 6.473684210526316) internal successors, (123), 22 states have internal predecessors, (123), 7 states have call successors, (20), 3 states have call predecessors, (20), 6 states have return successors, (20), 4 states have call predecessors, (20), 7 states have call successors, (20) [2025-01-09 15:18:41,538 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 577 transitions. [2025-01-09 15:18:41,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2025-01-09 15:18:41,538 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:41,538 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:41,559 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-01-09 15:18:41,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:18:41,739 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:41,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:41,739 INFO L85 PathProgramCache]: Analyzing trace with hash 568983787, now seen corresponding path program 1 times [2025-01-09 15:18:41,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:41,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237745600] [2025-01-09 15:18:41,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:41,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:41,752 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-01-09 15:18:41,795 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-01-09 15:18:41,795 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:41,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 15:18:41,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2023679504] [2025-01-09 15:18:41,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:41,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:18:41,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 15:18:41,799 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 15:18:41,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-09 15:18:41,913 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-01-09 15:18:41,970 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-01-09 15:18:41,970 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:41,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:41,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-01-09 15:18:41,977 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 15:18:41,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-01-09 15:18:41,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-01-09 15:18:41,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-01-09 15:18:42,101 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 15:18:42,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 26 [2025-01-09 15:18:42,116 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:18:42,117 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 15:18:42,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:42,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237745600] [2025-01-09 15:18:42,117 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 15:18:42,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023679504] [2025-01-09 15:18:42,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023679504] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:18:42,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:18:42,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 15:18:42,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920683065] [2025-01-09 15:18:42,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:18:42,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 15:18:42,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:42,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 15:18:42,117 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 15:18:42,118 INFO L87 Difference]: Start difference. First operand 512 states and 577 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-01-09 15:18:42,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:42,462 INFO L93 Difference]: Finished difference Result 1273 states and 1426 transitions. [2025-01-09 15:18:42,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 15:18:42,462 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 136 [2025-01-09 15:18:42,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:42,465 INFO L225 Difference]: With dead ends: 1273 [2025-01-09 15:18:42,465 INFO L226 Difference]: Without dead ends: 817 [2025-01-09 15:18:42,465 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 15:18:42,466 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 59 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:42,466 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 543 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 15:18:42,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2025-01-09 15:18:42,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 620. [2025-01-09 15:18:42,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 501 states have (on average 1.0638722554890219) internal successors, (533), 505 states have internal predecessors, (533), 76 states have call successors, (76), 42 states have call predecessors, (76), 42 states have return successors, (76), 72 states have call predecessors, (76), 76 states have call successors, (76) [2025-01-09 15:18:42,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 685 transitions. [2025-01-09 15:18:42,543 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 685 transitions. Word has length 136 [2025-01-09 15:18:42,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:42,544 INFO L471 AbstractCegarLoop]: Abstraction has 620 states and 685 transitions. [2025-01-09 15:18:42,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-01-09 15:18:42,544 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 685 transitions. [2025-01-09 15:18:42,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2025-01-09 15:18:42,545 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:42,545 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:42,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-01-09 15:18:42,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2025-01-09 15:18:42,749 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:42,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:42,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1516398088, now seen corresponding path program 1 times [2025-01-09 15:18:42,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:42,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186024393] [2025-01-09 15:18:42,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:42,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:42,762 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-01-09 15:18:42,806 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-01-09 15:18:42,806 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:42,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 15:18:42,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [708114081] [2025-01-09 15:18:42,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:42,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:18:42,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 15:18:42,809 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 15:18:42,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-09 15:18:42,920 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-01-09 15:18:42,978 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-01-09 15:18:42,978 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:42,978 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:42,980 INFO L256 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-01-09 15:18:42,984 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 15:18:42,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-01-09 15:18:42,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-01-09 15:18:42,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-01-09 15:18:43,150 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 15:18:43,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 37 [2025-01-09 15:18:43,177 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:18:43,178 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 15:18:43,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:43,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186024393] [2025-01-09 15:18:43,178 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 15:18:43,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708114081] [2025-01-09 15:18:43,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708114081] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:18:43,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:18:43,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 15:18:43,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357558162] [2025-01-09 15:18:43,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:18:43,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 15:18:43,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:43,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 15:18:43,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-01-09 15:18:43,180 INFO L87 Difference]: Start difference. First operand 620 states and 685 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-01-09 15:18:43,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:43,865 INFO L93 Difference]: Finished difference Result 1156 states and 1274 transitions. [2025-01-09 15:18:43,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 15:18:43,865 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 137 [2025-01-09 15:18:43,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:43,868 INFO L225 Difference]: With dead ends: 1156 [2025-01-09 15:18:43,868 INFO L226 Difference]: Without dead ends: 744 [2025-01-09 15:18:43,869 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-01-09 15:18:43,869 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 105 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:43,869 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 575 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 15:18:43,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2025-01-09 15:18:43,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 511. [2025-01-09 15:18:43,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 422 states have (on average 1.0639810426540284) internal successors, (449), 424 states have internal predecessors, (449), 56 states have call successors, (56), 32 states have call predecessors, (56), 32 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2025-01-09 15:18:43,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 561 transitions. [2025-01-09 15:18:43,931 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 561 transitions. Word has length 137 [2025-01-09 15:18:43,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:43,931 INFO L471 AbstractCegarLoop]: Abstraction has 511 states and 561 transitions. [2025-01-09 15:18:43,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-01-09 15:18:43,931 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 561 transitions. [2025-01-09 15:18:43,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2025-01-09 15:18:43,932 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:43,932 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:43,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-01-09 15:18:44,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:18:44,137 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:44,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:44,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1676215074, now seen corresponding path program 1 times [2025-01-09 15:18:44,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:44,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966692730] [2025-01-09 15:18:44,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:44,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:44,147 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-01-09 15:18:44,186 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-01-09 15:18:44,186 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:44,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:44,464 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 72 proven. 12 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2025-01-09 15:18:44,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:44,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966692730] [2025-01-09 15:18:44,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966692730] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 15:18:44,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840734213] [2025-01-09 15:18:44,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:44,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:18:44,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 15:18:44,471 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 15:18:44,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-09 15:18:44,578 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-01-09 15:18:44,645 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-01-09 15:18:44,645 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:44,645 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:44,651 INFO L256 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-01-09 15:18:44,655 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 15:18:44,661 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 15:18:44,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 7 [2025-01-09 15:18:44,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2025-01-09 15:18:44,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2025-01-09 15:18:44,823 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 231 proven. 12 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2025-01-09 15:18:44,824 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 15:18:45,062 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 72 proven. 15 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2025-01-09 15:18:45,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840734213] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 15:18:45,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 15:18:45,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 22 [2025-01-09 15:18:45,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891891291] [2025-01-09 15:18:45,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 15:18:45,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-01-09 15:18:45,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:45,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-01-09 15:18:45,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2025-01-09 15:18:45,064 INFO L87 Difference]: Start difference. First operand 511 states and 561 transitions. Second operand has 22 states, 18 states have (on average 4.888888888888889) internal successors, (88), 22 states have internal predecessors, (88), 8 states have call successors, (22), 3 states have call predecessors, (22), 7 states have return successors, (22), 4 states have call predecessors, (22), 8 states have call successors, (22) [2025-01-09 15:18:45,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:45,519 INFO L93 Difference]: Finished difference Result 847 states and 927 transitions. [2025-01-09 15:18:45,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-01-09 15:18:45,519 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 4.888888888888889) internal successors, (88), 22 states have internal predecessors, (88), 8 states have call successors, (22), 3 states have call predecessors, (22), 7 states have return successors, (22), 4 states have call predecessors, (22), 8 states have call successors, (22) Word has length 137 [2025-01-09 15:18:45,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:45,521 INFO L225 Difference]: With dead ends: 847 [2025-01-09 15:18:45,521 INFO L226 Difference]: Without dead ends: 496 [2025-01-09 15:18:45,522 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 264 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=204, Invalid=666, Unknown=0, NotChecked=0, Total=870 [2025-01-09 15:18:45,522 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 333 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:45,522 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 501 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 15:18:45,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2025-01-09 15:18:45,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 341. [2025-01-09 15:18:45,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 288 states have (on average 1.0659722222222223) internal successors, (307), 288 states have internal predecessors, (307), 32 states have call successors, (32), 20 states have call predecessors, (32), 20 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2025-01-09 15:18:45,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 371 transitions. [2025-01-09 15:18:45,567 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 371 transitions. Word has length 137 [2025-01-09 15:18:45,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:45,567 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 371 transitions. [2025-01-09 15:18:45,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 4.888888888888889) internal successors, (88), 22 states have internal predecessors, (88), 8 states have call successors, (22), 3 states have call predecessors, (22), 7 states have return successors, (22), 4 states have call predecessors, (22), 8 states have call successors, (22) [2025-01-09 15:18:45,567 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 371 transitions. [2025-01-09 15:18:45,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2025-01-09 15:18:45,568 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:45,568 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:45,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-01-09 15:18:45,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:18:45,773 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:45,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:45,773 INFO L85 PathProgramCache]: Analyzing trace with hash -2002447632, now seen corresponding path program 1 times [2025-01-09 15:18:45,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:45,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218205639] [2025-01-09 15:18:45,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:45,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:45,784 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-01-09 15:18:45,811 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-01-09 15:18:45,811 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:45,811 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 15:18:45,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1965102788] [2025-01-09 15:18:45,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:45,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:18:45,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 15:18:45,816 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 15:18:45,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-01-09 15:18:45,926 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-01-09 15:18:46,013 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-01-09 15:18:46,013 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:46,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:46,015 INFO L256 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-01-09 15:18:46,022 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 15:18:46,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-01-09 15:18:46,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-01-09 15:18:46,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-01-09 15:18:46,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-01-09 15:18:46,243 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 15:18:46,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 28 [2025-01-09 15:18:46,263 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:18:46,263 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 15:18:46,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:46,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218205639] [2025-01-09 15:18:46,263 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 15:18:46,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965102788] [2025-01-09 15:18:46,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965102788] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:18:46,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:18:46,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 15:18:46,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316603761] [2025-01-09 15:18:46,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:18:46,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 15:18:46,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:46,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 15:18:46,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-01-09 15:18:46,264 INFO L87 Difference]: Start difference. First operand 341 states and 371 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-01-09 15:18:46,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:46,660 INFO L93 Difference]: Finished difference Result 781 states and 849 transitions. [2025-01-09 15:18:46,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 15:18:46,661 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 137 [2025-01-09 15:18:46,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:46,663 INFO L225 Difference]: With dead ends: 781 [2025-01-09 15:18:46,663 INFO L226 Difference]: Without dead ends: 443 [2025-01-09 15:18:46,663 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-01-09 15:18:46,663 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 45 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:46,663 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 447 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 15:18:46,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2025-01-09 15:18:46,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 335. [2025-01-09 15:18:46,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 282 states have (on average 1.0602836879432624) internal successors, (299), 282 states have internal predecessors, (299), 32 states have call successors, (32), 20 states have call predecessors, (32), 20 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2025-01-09 15:18:46,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 363 transitions. [2025-01-09 15:18:46,710 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 363 transitions. Word has length 137 [2025-01-09 15:18:46,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:46,711 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 363 transitions. [2025-01-09 15:18:46,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-01-09 15:18:46,711 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 363 transitions. [2025-01-09 15:18:46,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-01-09 15:18:46,711 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:46,712 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:46,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-01-09 15:18:46,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2025-01-09 15:18:46,912 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:46,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:46,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1362134720, now seen corresponding path program 1 times [2025-01-09 15:18:46,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:46,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939549683] [2025-01-09 15:18:46,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:46,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:46,923 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-01-09 15:18:46,968 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-01-09 15:18:46,968 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:46,968 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 15:18:46,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [95536693] [2025-01-09 15:18:46,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:46,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:18:46,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 15:18:46,974 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 15:18:46,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-09 15:18:47,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-01-09 15:18:47,247 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-01-09 15:18:47,247 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:47,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:47,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-01-09 15:18:47,273 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 15:18:47,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-01-09 15:18:47,370 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 15:18:47,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 28 [2025-01-09 15:18:47,389 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:18:47,389 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 15:18:47,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:47,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939549683] [2025-01-09 15:18:47,390 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 15:18:47,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95536693] [2025-01-09 15:18:47,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95536693] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:18:47,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:18:47,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 15:18:47,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540509799] [2025-01-09 15:18:47,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:18:47,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 15:18:47,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:47,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 15:18:47,390 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-09 15:18:47,390 INFO L87 Difference]: Start difference. First operand 335 states and 363 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-01-09 15:18:47,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:47,690 INFO L93 Difference]: Finished difference Result 617 states and 670 transitions. [2025-01-09 15:18:47,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 15:18:47,691 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 138 [2025-01-09 15:18:47,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:47,693 INFO L225 Difference]: With dead ends: 617 [2025-01-09 15:18:47,693 INFO L226 Difference]: Without dead ends: 393 [2025-01-09 15:18:47,693 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-01-09 15:18:47,693 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 56 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:47,693 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 630 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 15:18:47,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2025-01-09 15:18:47,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 335. [2025-01-09 15:18:47,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 282 states have (on average 1.0567375886524824) internal successors, (298), 282 states have internal predecessors, (298), 32 states have call successors, (32), 20 states have call predecessors, (32), 20 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2025-01-09 15:18:47,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 362 transitions. [2025-01-09 15:18:47,741 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 362 transitions. Word has length 138 [2025-01-09 15:18:47,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:47,742 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 362 transitions. [2025-01-09 15:18:47,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-01-09 15:18:47,742 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 362 transitions. [2025-01-09 15:18:47,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-01-09 15:18:47,742 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:47,743 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:47,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-01-09 15:18:47,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2025-01-09 15:18:47,943 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:47,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:47,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1246468342, now seen corresponding path program 1 times [2025-01-09 15:18:47,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:47,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364499152] [2025-01-09 15:18:47,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:47,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:47,953 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-01-09 15:18:48,008 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-01-09 15:18:48,008 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:48,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 15:18:48,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1445691239] [2025-01-09 15:18:48,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:48,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:18:48,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 15:18:48,012 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 15:18:48,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-09 15:18:48,128 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-01-09 15:18:48,187 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-01-09 15:18:48,188 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:48,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:48,189 INFO L256 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-09 15:18:48,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 15:18:48,259 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 15:18:48,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 28 [2025-01-09 15:18:48,274 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:18:48,274 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 15:18:48,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:48,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364499152] [2025-01-09 15:18:48,274 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 15:18:48,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445691239] [2025-01-09 15:18:48,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445691239] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:18:48,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:18:48,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 15:18:48,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061048303] [2025-01-09 15:18:48,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:18:48,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 15:18:48,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:48,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 15:18:48,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-09 15:18:48,278 INFO L87 Difference]: Start difference. First operand 335 states and 362 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-01-09 15:18:48,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:48,544 INFO L93 Difference]: Finished difference Result 661 states and 715 transitions. [2025-01-09 15:18:48,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 15:18:48,544 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 138 [2025-01-09 15:18:48,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:48,546 INFO L225 Difference]: With dead ends: 661 [2025-01-09 15:18:48,546 INFO L226 Difference]: Without dead ends: 437 [2025-01-09 15:18:48,546 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-01-09 15:18:48,547 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 50 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:48,547 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 457 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 15:18:48,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2025-01-09 15:18:48,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 335. [2025-01-09 15:18:48,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 282 states have (on average 1.053191489361702) internal successors, (297), 282 states have internal predecessors, (297), 32 states have call successors, (32), 20 states have call predecessors, (32), 20 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2025-01-09 15:18:48,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 361 transitions. [2025-01-09 15:18:48,611 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 361 transitions. Word has length 138 [2025-01-09 15:18:48,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:48,612 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 361 transitions. [2025-01-09 15:18:48,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-01-09 15:18:48,612 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 361 transitions. [2025-01-09 15:18:48,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-01-09 15:18:48,612 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:48,612 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:48,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-01-09 15:18:48,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:18:48,817 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:48,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:48,817 INFO L85 PathProgramCache]: Analyzing trace with hash -521748075, now seen corresponding path program 1 times [2025-01-09 15:18:48,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:48,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650929889] [2025-01-09 15:18:48,817 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:48,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:48,829 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-01-09 15:18:48,858 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-01-09 15:18:48,858 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:48,858 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:49,619 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:18:49,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:49,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650929889] [2025-01-09 15:18:49,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650929889] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:18:49,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:18:49,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-01-09 15:18:49,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890622609] [2025-01-09 15:18:49,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:18:49,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 15:18:49,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:49,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 15:18:49,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2025-01-09 15:18:49,621 INFO L87 Difference]: Start difference. First operand 335 states and 361 transitions. Second operand has 14 states, 13 states have (on average 5.0) internal successors, (65), 14 states have internal predecessors, (65), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2025-01-09 15:18:50,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:50,087 INFO L93 Difference]: Finished difference Result 400 states and 427 transitions. [2025-01-09 15:18:50,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-09 15:18:50,087 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.0) internal successors, (65), 14 states have internal predecessors, (65), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 142 [2025-01-09 15:18:50,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:50,089 INFO L225 Difference]: With dead ends: 400 [2025-01-09 15:18:50,089 INFO L226 Difference]: Without dead ends: 398 [2025-01-09 15:18:50,089 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2025-01-09 15:18:50,090 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 31 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1445 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:50,090 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 1445 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 15:18:50,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2025-01-09 15:18:50,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 379. [2025-01-09 15:18:50,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 326 states have (on average 1.049079754601227) internal successors, (342), 326 states have internal predecessors, (342), 32 states have call successors, (32), 20 states have call predecessors, (32), 20 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2025-01-09 15:18:50,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 406 transitions. [2025-01-09 15:18:50,172 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 406 transitions. Word has length 142 [2025-01-09 15:18:50,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:50,173 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 406 transitions. [2025-01-09 15:18:50,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.0) internal successors, (65), 14 states have internal predecessors, (65), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2025-01-09 15:18:50,173 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 406 transitions. [2025-01-09 15:18:50,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-01-09 15:18:50,174 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:50,174 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:50,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2025-01-09 15:18:50,174 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:50,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:50,175 INFO L85 PathProgramCache]: Analyzing trace with hash 158310295, now seen corresponding path program 1 times [2025-01-09 15:18:50,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:50,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943398245] [2025-01-09 15:18:50,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:50,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:50,187 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-01-09 15:18:50,214 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-01-09 15:18:50,214 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:50,214 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:50,461 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:18:50,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:50,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943398245] [2025-01-09 15:18:50,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943398245] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:18:50,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:18:50,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 15:18:50,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604578036] [2025-01-09 15:18:50,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:18:50,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 15:18:50,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:50,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 15:18:50,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-01-09 15:18:50,462 INFO L87 Difference]: Start difference. First operand 379 states and 406 transitions. Second operand has 7 states, 5 states have (on average 13.0) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-01-09 15:18:50,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:50,615 INFO L93 Difference]: Finished difference Result 681 states and 727 transitions. [2025-01-09 15:18:50,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 15:18:50,615 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 13.0) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 142 [2025-01-09 15:18:50,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:50,617 INFO L225 Difference]: With dead ends: 681 [2025-01-09 15:18:50,617 INFO L226 Difference]: Without dead ends: 413 [2025-01-09 15:18:50,617 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-01-09 15:18:50,618 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 45 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:50,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 541 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 15:18:50,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2025-01-09 15:18:50,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 379. [2025-01-09 15:18:50,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 326 states have (on average 1.0460122699386503) internal successors, (341), 326 states have internal predecessors, (341), 32 states have call successors, (32), 20 states have call predecessors, (32), 20 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2025-01-09 15:18:50,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 405 transitions. [2025-01-09 15:18:50,667 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 405 transitions. Word has length 142 [2025-01-09 15:18:50,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:50,668 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 405 transitions. [2025-01-09 15:18:50,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 13.0) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-01-09 15:18:50,668 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 405 transitions. [2025-01-09 15:18:50,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-01-09 15:18:50,668 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:50,668 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:50,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2025-01-09 15:18:50,669 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:50,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:50,669 INFO L85 PathProgramCache]: Analyzing trace with hash -499115821, now seen corresponding path program 1 times [2025-01-09 15:18:50,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:50,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255592340] [2025-01-09 15:18:50,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:50,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:50,678 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-01-09 15:18:50,690 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-01-09 15:18:50,690 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:50,690 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:50,974 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:18:50,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:50,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255592340] [2025-01-09 15:18:50,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255592340] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:18:50,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:18:50,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 15:18:50,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140248299] [2025-01-09 15:18:50,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:18:50,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 15:18:50,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:50,976 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 15:18:50,976 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-01-09 15:18:50,976 INFO L87 Difference]: Start difference. First operand 379 states and 405 transitions. Second operand has 7 states, 5 states have (on average 13.0) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-01-09 15:18:51,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:51,126 INFO L93 Difference]: Finished difference Result 662 states and 706 transitions. [2025-01-09 15:18:51,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 15:18:51,127 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 13.0) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 142 [2025-01-09 15:18:51,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:51,129 INFO L225 Difference]: With dead ends: 662 [2025-01-09 15:18:51,129 INFO L226 Difference]: Without dead ends: 394 [2025-01-09 15:18:51,129 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-01-09 15:18:51,129 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 65 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:51,130 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 556 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 15:18:51,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2025-01-09 15:18:51,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 379. [2025-01-09 15:18:51,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 326 states have (on average 1.0429447852760736) internal successors, (340), 326 states have internal predecessors, (340), 32 states have call successors, (32), 20 states have call predecessors, (32), 20 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2025-01-09 15:18:51,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 404 transitions. [2025-01-09 15:18:51,190 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 404 transitions. Word has length 142 [2025-01-09 15:18:51,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:51,190 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 404 transitions. [2025-01-09 15:18:51,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 13.0) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2025-01-09 15:18:51,190 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 404 transitions. [2025-01-09 15:18:51,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-01-09 15:18:51,191 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:18:51,191 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:51,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2025-01-09 15:18:51,191 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:18:51,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:18:51,191 INFO L85 PathProgramCache]: Analyzing trace with hash 180942549, now seen corresponding path program 1 times [2025-01-09 15:18:51,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:18:51,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926316161] [2025-01-09 15:18:51,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:18:51,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:18:51,202 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-01-09 15:18:51,258 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-01-09 15:18:51,261 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:18:51,261 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:18:51,613 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 15:18:51,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:18:51,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926316161] [2025-01-09 15:18:51,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926316161] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:18:51,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:18:51,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-01-09 15:18:51,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297778471] [2025-01-09 15:18:51,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:18:51,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-09 15:18:51,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:18:51,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-09 15:18:51,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2025-01-09 15:18:51,614 INFO L87 Difference]: Start difference. First operand 379 states and 404 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-01-09 15:18:51,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:18:51,922 INFO L93 Difference]: Finished difference Result 492 states and 534 transitions. [2025-01-09 15:18:51,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-09 15:18:51,922 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 142 [2025-01-09 15:18:51,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:18:51,923 INFO L225 Difference]: With dead ends: 492 [2025-01-09 15:18:51,923 INFO L226 Difference]: Without dead ends: 0 [2025-01-09 15:18:51,924 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2025-01-09 15:18:51,924 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 82 mSDsluCounter, 1914 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 2104 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 15:18:51,925 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 2104 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 15:18:51,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-01-09 15:18:51,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-01-09 15:18:51,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 15:18:51,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-01-09 15:18:51,925 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 142 [2025-01-09 15:18:51,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:18:51,926 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-01-09 15:18:51,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-01-09 15:18:51,926 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-01-09 15:18:51,927 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-01-09 15:18:51,928 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-01-09 15:18:51,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2025-01-09 15:18:51,931 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 15:18:51,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.