./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_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-ap_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 6b3d37dbb1f844bbdab9795055d991e82d88af691e0e65987480a92814525937 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 15:30:08,806 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 15:30:08,855 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 15:30:08,862 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 15:30:08,864 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 15:30:08,885 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 15:30:08,885 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 15:30:08,885 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 15:30:08,885 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 15:30:08,886 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 15:30:08,886 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 15:30:08,886 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 15:30:08,886 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 15:30:08,886 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 15:30:08,886 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 15:30:08,886 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 15:30:08,886 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 15:30:08,886 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 15:30:08,886 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 15:30:08,886 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 15:30:08,886 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 15:30:08,886 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 15:30:08,886 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 15:30:08,886 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 15:30:08,886 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 15:30:08,887 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 15:30:08,887 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 15:30:08,887 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 15:30:08,887 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 15:30:08,887 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 15:30:08,887 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 15:30:08,887 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 15:30:08,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 15:30:08,887 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 15:30:08,887 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 15:30:08,887 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 15:30:08,887 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 15:30:08,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 15:30:08,887 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 15:30:08,887 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 15:30:08,887 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 15:30:08,887 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 15:30:08,890 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 15:30:08,890 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 15:30:08,890 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 15:30:08,890 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 15:30:08,890 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 15:30:08,890 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 15:30:08,890 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 -> 6b3d37dbb1f844bbdab9795055d991e82d88af691e0e65987480a92814525937 [2025-01-09 15:30:09,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 15:30:09,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 15:30:09,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 15:30:09,132 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 15:30:09,132 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 15:30:09,133 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-12.i [2025-01-09 15:30:10,256 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4764b4fc5/da8dd8ef9a814f31b97dc8d36fc83c6c/FLAG795e8ca23 [2025-01-09 15:30:10,485 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 15:30:10,485 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-12.i [2025-01-09 15:30:10,497 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4764b4fc5/da8dd8ef9a814f31b97dc8d36fc83c6c/FLAG795e8ca23 [2025-01-09 15:30:10,815 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4764b4fc5/da8dd8ef9a814f31b97dc8d36fc83c6c [2025-01-09 15:30:10,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 15:30:10,818 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 15:30:10,819 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 15:30:10,819 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 15:30:10,821 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 15:30:10,822 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 03:30:10" (1/1) ... [2025-01-09 15:30:10,822 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2be0aefe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:30:10, skipping insertion in model container [2025-01-09 15:30:10,822 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 03:30:10" (1/1) ... [2025-01-09 15:30:10,836 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 15:30:10,922 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-ap_file-12.i[917,930] [2025-01-09 15:30:10,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 15:30:10,993 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 15:30:11,003 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-ap_file-12.i[917,930] [2025-01-09 15:30:11,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 15:30:11,056 INFO L204 MainTranslator]: Completed translation [2025-01-09 15:30:11,058 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:30:11 WrapperNode [2025-01-09 15:30:11,058 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 15:30:11,059 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 15:30:11,059 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 15:30:11,059 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 15:30:11,064 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:30:11" (1/1) ... [2025-01-09 15:30:11,072 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:30:11" (1/1) ... [2025-01-09 15:30:11,097 INFO L138 Inliner]: procedures = 26, calls = 153, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 455 [2025-01-09 15:30:11,097 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 15:30:11,098 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 15:30:11,098 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 15:30:11,098 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 15:30:11,104 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:30:11" (1/1) ... [2025-01-09 15:30:11,104 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:30:11" (1/1) ... [2025-01-09 15:30:11,107 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:30:11" (1/1) ... [2025-01-09 15:30:11,121 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 15:30:11,122 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:30:11" (1/1) ... [2025-01-09 15:30:11,122 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:30:11" (1/1) ... [2025-01-09 15:30:11,136 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:30:11" (1/1) ... [2025-01-09 15:30:11,137 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:30:11" (1/1) ... [2025-01-09 15:30:11,140 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:30:11" (1/1) ... [2025-01-09 15:30:11,141 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:30:11" (1/1) ... [2025-01-09 15:30:11,142 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:30:11" (1/1) ... [2025-01-09 15:30:11,145 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 15:30:11,145 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 15:30:11,145 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 15:30:11,145 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 15:30:11,146 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:30:11" (1/1) ... [2025-01-09 15:30:11,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 15:30:11,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 15:30:11,171 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 15:30:11,173 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 15:30:11,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 15:30:11,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-09 15:30:11,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-09 15:30:11,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-09 15:30:11,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-01-09 15:30:11,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-09 15:30:11,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-09 15:30:11,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-09 15:30:11,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-01-09 15:30:11,191 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 15:30:11,191 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 15:30:11,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 15:30:11,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-09 15:30:11,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-09 15:30:11,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-01-09 15:30:11,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 15:30:11,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 15:30:11,270 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 15:30:11,272 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 15:30:11,619 INFO L? ?]: Removed 131 outVars from TransFormulas that were not future-live. [2025-01-09 15:30:11,619 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 15:30:11,629 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 15:30:11,631 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 15:30:11,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:30:11 BoogieIcfgContainer [2025-01-09 15:30:11,631 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 15:30:11,633 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 15:30:11,633 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 15:30:11,636 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 15:30:11,636 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 03:30:10" (1/3) ... [2025-01-09 15:30:11,637 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe23cd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 03:30:11, skipping insertion in model container [2025-01-09 15:30:11,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:30:11" (2/3) ... [2025-01-09 15:30:11,637 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe23cd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 03:30:11, skipping insertion in model container [2025-01-09 15:30:11,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:30:11" (3/3) ... [2025-01-09 15:30:11,638 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-12.i [2025-01-09 15:30:11,648 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 15:30:11,650 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-ap_file-12.i that has 2 procedures, 97 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 15:30:11,693 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 15:30:11,702 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;@62c429b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 15:30:11,703 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 15:30:11,706 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 15:30:11,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-01-09 15:30:11,716 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:30:11,716 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 15:30:11,717 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:30:11,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:30:11,721 INFO L85 PathProgramCache]: Analyzing trace with hash -253534540, now seen corresponding path program 1 times [2025-01-09 15:30:11,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:30:11,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877055067] [2025-01-09 15:30:11,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:30:11,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:30:11,805 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-01-09 15:30:11,831 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-01-09 15:30:11,833 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:30:11,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:30:11,965 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 15:30:11,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:30:11,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877055067] [2025-01-09 15:30:11,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877055067] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 15:30:11,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736750053] [2025-01-09 15:30:11,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:30:11,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:30:11,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 15:30:11,969 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 15:30:11,970 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 15:30:12,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-01-09 15:30:12,156 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-01-09 15:30:12,156 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:30:12,156 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:30:12,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 15:30:12,164 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 15:30:12,181 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 15:30:12,183 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 15:30:12,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736750053] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:30:12,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 15:30:12,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 15:30:12,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481166122] [2025-01-09 15:30:12,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:30:12,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 15:30:12,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:30:12,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 15:30:12,201 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 15:30:12,202 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 15:30:12,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:30:12,221 INFO L93 Difference]: Finished difference Result 182 states and 281 transitions. [2025-01-09 15:30:12,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 15:30:12,223 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 15:30:12,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:30:12,228 INFO L225 Difference]: With dead ends: 182 [2025-01-09 15:30:12,228 INFO L226 Difference]: Without dead ends: 88 [2025-01-09 15:30:12,231 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 15:30:12,233 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 15:30:12,234 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 15:30:12,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2025-01-09 15:30:12,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2025-01-09 15:30:12,260 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 15:30:12,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 123 transitions. [2025-01-09 15:30:12,272 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 123 transitions. Word has length 117 [2025-01-09 15:30:12,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:30:12,272 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 123 transitions. [2025-01-09 15:30:12,273 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 15:30:12,273 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 123 transitions. [2025-01-09 15:30:12,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-01-09 15:30:12,276 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:30:12,276 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 15:30:12,283 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 15:30:12,476 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 15:30:12,477 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:30:12,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:30:12,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1078795924, now seen corresponding path program 1 times [2025-01-09 15:30:12,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:30:12,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941853521] [2025-01-09 15:30:12,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:30:12,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:30:12,502 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-01-09 15:30:12,528 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-01-09 15:30:12,528 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:30:12,528 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:30:12,795 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 15:30:12,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:30:12,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941853521] [2025-01-09 15:30:12,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941853521] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 15:30:12,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064415509] [2025-01-09 15:30:12,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:30:12,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:30:12,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 15:30:12,799 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 15:30:12,800 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 15:30:12,894 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-01-09 15:30:12,949 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-01-09 15:30:12,949 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:30:12,950 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:30:12,952 INFO L256 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 15:30:12,955 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 15:30:12,995 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 15:30:12,995 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 15:30:12,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064415509] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:30:12,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 15:30:12,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2025-01-09 15:30:12,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964058586] [2025-01-09 15:30:12,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:30:12,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 15:30:12,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:30:12,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 15:30:12,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-01-09 15:30:13,000 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 15:30:13,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:30:13,024 INFO L93 Difference]: Finished difference Result 173 states and 243 transitions. [2025-01-09 15:30:13,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 15:30:13,025 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 15:30:13,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:30:13,026 INFO L225 Difference]: With dead ends: 173 [2025-01-09 15:30:13,026 INFO L226 Difference]: Without dead ends: 88 [2025-01-09 15:30:13,028 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 15:30:13,028 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 15:30:13,029 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 15:30:13,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2025-01-09 15:30:13,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2025-01-09 15:30:13,039 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 15:30:13,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 122 transitions. [2025-01-09 15:30:13,042 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 122 transitions. Word has length 117 [2025-01-09 15:30:13,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:30:13,045 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 122 transitions. [2025-01-09 15:30:13,045 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 15:30:13,045 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 122 transitions. [2025-01-09 15:30:13,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2025-01-09 15:30:13,046 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:30:13,046 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 15:30:13,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-09 15:30:13,247 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 15:30:13,247 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:30:13,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:30:13,248 INFO L85 PathProgramCache]: Analyzing trace with hash 928929970, now seen corresponding path program 1 times [2025-01-09 15:30:13,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:30:13,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681312405] [2025-01-09 15:30:13,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:30:13,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:30:13,264 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 119 statements into 1 equivalence classes. [2025-01-09 15:30:13,281 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 119 of 119 statements. [2025-01-09 15:30:13,281 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:30:13,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:30:13,452 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 15:30:13,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:30:13,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681312405] [2025-01-09 15:30:13,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681312405] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 15:30:13,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731771070] [2025-01-09 15:30:13,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:30:13,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:30:13,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 15:30:13,456 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 15:30:13,458 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 15:30:13,557 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 119 statements into 1 equivalence classes. [2025-01-09 15:30:13,602 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 119 of 119 statements. [2025-01-09 15:30:13,603 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:30:13,603 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:30:13,605 INFO L256 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-09 15:30:13,608 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 15:30:13,632 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 15:30:13,632 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 15:30:13,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731771070] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:30:13,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 15:30:13,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2025-01-09 15:30:13,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352191467] [2025-01-09 15:30:13,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:30:13,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 15:30:13,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:30:13,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 15:30:13,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-01-09 15:30:13,635 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 15:30:13,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:30:13,669 INFO L93 Difference]: Finished difference Result 176 states and 245 transitions. [2025-01-09 15:30:13,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 15:30:13,670 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 15:30:13,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:30:13,673 INFO L225 Difference]: With dead ends: 176 [2025-01-09 15:30:13,673 INFO L226 Difference]: Without dead ends: 91 [2025-01-09 15:30:13,674 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 15:30:13,674 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 15:30:13,674 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 15:30:13,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2025-01-09 15:30:13,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2025-01-09 15:30:13,684 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 15:30:13,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 125 transitions. [2025-01-09 15:30:13,686 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 125 transitions. Word has length 119 [2025-01-09 15:30:13,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:30:13,686 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 125 transitions. [2025-01-09 15:30:13,686 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 15:30:13,686 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 125 transitions. [2025-01-09 15:30:13,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2025-01-09 15:30:13,689 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:30:13,689 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 15:30:13,696 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-09 15:30:13,890 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 15:30:13,890 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:30:13,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:30:13,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1684265354, now seen corresponding path program 1 times [2025-01-09 15:30:13,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:30:13,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392879864] [2025-01-09 15:30:13,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:30:13,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:30:13,904 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-01-09 15:30:13,973 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-01-09 15:30:13,976 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:30:13,976 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:30:14,519 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 15:30:14,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:30:14,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392879864] [2025-01-09 15:30:14,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392879864] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:30:14,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:30:14,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-01-09 15:30:14,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210663929] [2025-01-09 15:30:14,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:30:14,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 15:30:14,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:30:14,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 15:30:14,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-01-09 15:30:14,520 INFO L87 Difference]: Start difference. First operand 91 states and 125 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 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 15:30:14,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:30:14,727 INFO L93 Difference]: Finished difference Result 133 states and 177 transitions. [2025-01-09 15:30:14,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 15:30:14,728 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 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 121 [2025-01-09 15:30:14,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:30:14,729 INFO L225 Difference]: With dead ends: 133 [2025-01-09 15:30:14,729 INFO L226 Difference]: Without dead ends: 131 [2025-01-09 15:30:14,729 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2025-01-09 15:30:14,730 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 157 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 15:30:14,730 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 622 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 15:30:14,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2025-01-09 15:30:14,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 116. [2025-01-09 15:30:14,740 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 15:30:14,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 157 transitions. [2025-01-09 15:30:14,743 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 157 transitions. Word has length 121 [2025-01-09 15:30:14,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:30:14,746 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 157 transitions. [2025-01-09 15:30:14,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 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 15:30:14,746 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 157 transitions. [2025-01-09 15:30:14,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2025-01-09 15:30:14,747 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:30:14,747 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 15:30:14,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 15:30:14,748 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:30:14,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:30:14,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1993155792, now seen corresponding path program 1 times [2025-01-09 15:30:14,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:30:14,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892539453] [2025-01-09 15:30:14,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:30:14,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:30:14,762 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-01-09 15:30:14,854 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-01-09 15:30:14,855 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:30:14,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:30:17,185 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 15:30:17,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:30:17,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892539453] [2025-01-09 15:30:17,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892539453] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 15:30:17,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515213757] [2025-01-09 15:30:17,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:30:17,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:30:17,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 15:30:17,188 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 15:30:17,190 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 15:30:17,266 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-01-09 15:30:17,317 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-01-09 15:30:17,317 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:30:17,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:30:17,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 77 conjuncts are in the unsatisfiable core [2025-01-09 15:30:17,328 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 15:30:17,467 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 15:30:18,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2025-01-09 15:30:18,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2025-01-09 15:30:19,759 INFO L349 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2025-01-09 15:30:19,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 36 [2025-01-09 15:30:20,033 INFO L349 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2025-01-09 15:30:20,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 42 [2025-01-09 15:30:20,119 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 8 proven. 208 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2025-01-09 15:30:20,119 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 15:30:20,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515213757] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 15:30:20,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 15:30:20,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 27] total 46 [2025-01-09 15:30:20,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338963225] [2025-01-09 15:30:20,397 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 15:30:20,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-01-09 15:30:20,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:30:20,398 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-01-09 15:30:20,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=2259, Unknown=0, NotChecked=0, Total=2450 [2025-01-09 15:30:20,401 INFO L87 Difference]: Start difference. First operand 116 states and 157 transitions. Second operand has 46 states, 38 states have (on average 2.736842105263158) internal successors, (104), 37 states have internal predecessors, (104), 12 states have call successors, (32), 6 states have call predecessors, (32), 7 states have return successors, (32), 12 states have call predecessors, (32), 12 states have call successors, (32) [2025-01-09 15:30:24,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:30:24,210 INFO L93 Difference]: Finished difference Result 364 states and 462 transitions. [2025-01-09 15:30:24,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2025-01-09 15:30:24,210 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 38 states have (on average 2.736842105263158) internal successors, (104), 37 states have internal predecessors, (104), 12 states have call successors, (32), 6 states have call predecessors, (32), 7 states have return successors, (32), 12 states have call predecessors, (32), 12 states have call successors, (32) Word has length 122 [2025-01-09 15:30:24,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:30:24,213 INFO L225 Difference]: With dead ends: 364 [2025-01-09 15:30:24,213 INFO L226 Difference]: Without dead ends: 362 [2025-01-09 15:30:24,217 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3665 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1220, Invalid=10770, Unknown=0, NotChecked=0, Total=11990 [2025-01-09 15:30:24,218 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 1172 mSDsluCounter, 2551 mSDsCounter, 0 mSdLazyCounter, 1876 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 2668 SdHoareTripleChecker+Invalid, 2171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 1876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-01-09 15:30:24,219 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1175 Valid, 2668 Invalid, 2171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 1876 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-01-09 15:30:24,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2025-01-09 15:30:24,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 132. [2025-01-09 15:30:24,242 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 15:30:24,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 169 transitions. [2025-01-09 15:30:24,243 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 169 transitions. Word has length 122 [2025-01-09 15:30:24,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:30:24,243 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 169 transitions. [2025-01-09 15:30:24,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 38 states have (on average 2.736842105263158) internal successors, (104), 37 states have internal predecessors, (104), 12 states have call successors, (32), 6 states have call predecessors, (32), 7 states have return successors, (32), 12 states have call predecessors, (32), 12 states have call successors, (32) [2025-01-09 15:30:24,243 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 169 transitions. [2025-01-09 15:30:24,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2025-01-09 15:30:24,244 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:30:24,244 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 15:30:24,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-09 15:30:24,445 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 15:30:24,445 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:30:24,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:30:24,446 INFO L85 PathProgramCache]: Analyzing trace with hash -2071042037, now seen corresponding path program 1 times [2025-01-09 15:30:24,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:30:24,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815479497] [2025-01-09 15:30:24,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:30:24,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:30:24,459 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-01-09 15:30:24,538 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-01-09 15:30:24,538 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:30:24,539 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:30:26,158 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 15:30:26,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:30:26,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815479497] [2025-01-09 15:30:26,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815479497] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 15:30:26,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785262828] [2025-01-09 15:30:26,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:30:26,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:30:26,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 15:30:26,162 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 15:30:26,163 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 15:30:26,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-01-09 15:30:26,290 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-01-09 15:30:26,290 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:30:26,290 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:30:26,293 INFO L256 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 76 conjuncts are in the unsatisfiable core [2025-01-09 15:30:26,298 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 15:30:26,393 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 15:30:26,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2025-01-09 15:30:27,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2025-01-09 15:30:28,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-09 15:30:28,527 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2025-01-09 15:30:28,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 32 [2025-01-09 15:30:28,871 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 8 proven. 208 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2025-01-09 15:30:28,871 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 15:30:29,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785262828] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 15:30:29,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 15:30:29,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 28] total 48 [2025-01-09 15:30:29,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670170495] [2025-01-09 15:30:29,337 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 15:30:29,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-01-09 15:30:29,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:30:29,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-01-09 15:30:29,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=2650, Unknown=0, NotChecked=0, Total=2862 [2025-01-09 15:30:29,339 INFO L87 Difference]: Start difference. First operand 132 states and 169 transitions. Second operand has 48 states, 40 states have (on average 2.65) internal successors, (106), 39 states have internal predecessors, (106), 12 states have call successors, (32), 6 states have call predecessors, (32), 7 states have return successors, (32), 12 states have call predecessors, (32), 12 states have call successors, (32) [2025-01-09 15:30:33,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:30:33,101 INFO L93 Difference]: Finished difference Result 318 states and 400 transitions. [2025-01-09 15:30:33,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2025-01-09 15:30:33,102 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 40 states have (on average 2.65) internal successors, (106), 39 states have internal predecessors, (106), 12 states have call successors, (32), 6 states have call predecessors, (32), 7 states have return successors, (32), 12 states have call predecessors, (32), 12 states have call successors, (32) Word has length 123 [2025-01-09 15:30:33,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:30:33,103 INFO L225 Difference]: With dead ends: 318 [2025-01-09 15:30:33,103 INFO L226 Difference]: Without dead ends: 316 [2025-01-09 15:30:33,106 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 195 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4160 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1388, Invalid=12184, Unknown=0, NotChecked=0, Total=13572 [2025-01-09 15:30:33,106 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 1265 mSDsluCounter, 2008 mSDsCounter, 0 mSdLazyCounter, 1691 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1268 SdHoareTripleChecker+Valid, 2093 SdHoareTripleChecker+Invalid, 1970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 1691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-01-09 15:30:33,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1268 Valid, 2093 Invalid, 1970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 1691 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-01-09 15:30:33,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2025-01-09 15:30:33,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 134. [2025-01-09 15:30:33,118 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 15:30:33,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 172 transitions. [2025-01-09 15:30:33,119 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 172 transitions. Word has length 123 [2025-01-09 15:30:33,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:30:33,119 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 172 transitions. [2025-01-09 15:30:33,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 40 states have (on average 2.65) internal successors, (106), 39 states have internal predecessors, (106), 12 states have call successors, (32), 6 states have call predecessors, (32), 7 states have return successors, (32), 12 states have call predecessors, (32), 12 states have call successors, (32) [2025-01-09 15:30:33,120 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 172 transitions. [2025-01-09 15:30:33,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2025-01-09 15:30:33,120 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:30:33,120 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 15:30:33,127 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 15:30:33,325 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 15:30:33,325 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:30:33,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:30:33,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1257942411, now seen corresponding path program 1 times [2025-01-09 15:30:33,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:30:33,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837316943] [2025-01-09 15:30:33,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:30:33,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:30:33,334 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-01-09 15:30:33,388 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-01-09 15:30:33,388 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:30:33,388 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:30:33,687 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 15:30:33,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:30:33,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837316943] [2025-01-09 15:30:33,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837316943] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 15:30:33,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698969760] [2025-01-09 15:30:33,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:30:33,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:30:33,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 15:30:33,690 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 15:30:33,691 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 15:30:33,769 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-01-09 15:30:33,810 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-01-09 15:30:33,810 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:30:33,810 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:30:33,812 INFO L256 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-01-09 15:30:33,815 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 15:30:33,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-09 15:30:34,193 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 35 treesize of output 23 [2025-01-09 15:30:34,197 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 10 proven. 250 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2025-01-09 15:30:34,197 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 15:30:34,354 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 31 treesize of output 27 [2025-01-09 15:30:34,400 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 15:30:34,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698969760] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 15:30:34,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 15:30:34,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 20 [2025-01-09 15:30:34,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641763001] [2025-01-09 15:30:34,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 15:30:34,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-09 15:30:34,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:30:34,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-09 15:30:34,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2025-01-09 15:30:34,402 INFO L87 Difference]: Start difference. First operand 134 states and 172 transitions. Second operand has 20 states, 17 states have (on average 5.764705882352941) internal successors, (98), 19 states have internal predecessors, (98), 10 states have call successors, (48), 4 states have call predecessors, (48), 6 states have return successors, (48), 7 states have call predecessors, (48), 10 states have call successors, (48) [2025-01-09 15:30:34,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:30:34,693 INFO L93 Difference]: Finished difference Result 299 states and 374 transitions. [2025-01-09 15:30:34,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-09 15:30:34,695 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 5.764705882352941) internal successors, (98), 19 states have internal predecessors, (98), 10 states have call successors, (48), 4 states have call predecessors, (48), 6 states have return successors, (48), 7 states have call predecessors, (48), 10 states have call successors, (48) Word has length 124 [2025-01-09 15:30:34,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:30:34,697 INFO L225 Difference]: With dead ends: 299 [2025-01-09 15:30:34,697 INFO L226 Difference]: Without dead ends: 168 [2025-01-09 15:30:34,698 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2025-01-09 15:30:34,698 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 215 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 15:30:34,699 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 388 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 15:30:34,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2025-01-09 15:30:34,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 138. [2025-01-09 15:30:34,716 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 15:30:34,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 174 transitions. [2025-01-09 15:30:34,717 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 174 transitions. Word has length 124 [2025-01-09 15:30:34,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:30:34,717 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 174 transitions. [2025-01-09 15:30:34,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 5.764705882352941) internal successors, (98), 19 states have internal predecessors, (98), 10 states have call successors, (48), 4 states have call predecessors, (48), 6 states have return successors, (48), 7 states have call predecessors, (48), 10 states have call successors, (48) [2025-01-09 15:30:34,717 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 174 transitions. [2025-01-09 15:30:34,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2025-01-09 15:30:34,718 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:30:34,718 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 15:30:34,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-09 15:30:34,918 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 15:30:34,919 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:30:34,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:30:34,919 INFO L85 PathProgramCache]: Analyzing trace with hash -810147536, now seen corresponding path program 1 times [2025-01-09 15:30:34,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:30:34,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963474248] [2025-01-09 15:30:34,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:30:34,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:30:34,932 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-01-09 15:30:34,938 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-01-09 15:30:34,938 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:30:34,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:30:34,999 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 15:30:34,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:30:34,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963474248] [2025-01-09 15:30:34,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963474248] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:30:34,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:30:34,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 15:30:35,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012460264] [2025-01-09 15:30:35,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:30:35,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 15:30:35,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:30:35,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 15:30:35,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 15:30:35,001 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 15:30:35,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:30:35,073 INFO L93 Difference]: Finished difference Result 355 states and 439 transitions. [2025-01-09 15:30:35,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 15:30:35,074 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 15:30:35,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:30:35,075 INFO L225 Difference]: With dead ends: 355 [2025-01-09 15:30:35,075 INFO L226 Difference]: Without dead ends: 220 [2025-01-09 15:30:35,076 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 15:30:35,077 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 15:30:35,077 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 15:30:35,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2025-01-09 15:30:35,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 159. [2025-01-09 15:30:35,093 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 15:30:35,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 198 transitions. [2025-01-09 15:30:35,095 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 198 transitions. Word has length 124 [2025-01-09 15:30:35,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:30:35,095 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 198 transitions. [2025-01-09 15:30:35,095 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 15:30:35,095 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 198 transitions. [2025-01-09 15:30:35,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-01-09 15:30:35,096 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:30:35,096 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 15:30:35,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-01-09 15:30:35,097 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:30:35,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:30:35,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1964205882, now seen corresponding path program 1 times [2025-01-09 15:30:35,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:30:35,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326620762] [2025-01-09 15:30:35,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:30:35,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:30:35,109 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-01-09 15:30:35,145 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-01-09 15:30:35,145 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:30:35,145 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:30:35,558 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 15:30:35,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:30:35,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326620762] [2025-01-09 15:30:35,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326620762] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 15:30:35,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289039373] [2025-01-09 15:30:35,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:30:35,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:30:35,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 15:30:35,561 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 15:30:35,563 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 15:30:35,640 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-01-09 15:30:35,678 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-01-09 15:30:35,678 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:30:35,678 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:30:35,680 INFO L256 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-01-09 15:30:35,683 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 15:30:35,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-09 15:30:36,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-09 15:30:36,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2025-01-09 15:30:36,576 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 35 treesize of output 23 [2025-01-09 15:30:36,579 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 10 proven. 250 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2025-01-09 15:30:36,579 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 15:30:36,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289039373] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 15:30:36,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 15:30:36,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2025-01-09 15:30:36,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649613855] [2025-01-09 15:30:36,656 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 15:30:36,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 15:30:36,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:30:36,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 15:30:36,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2025-01-09 15:30:36,657 INFO L87 Difference]: Start difference. First operand 159 states and 198 transitions. Second operand has 17 states, 15 states have (on average 6.466666666666667) internal successors, (97), 16 states have internal predecessors, (97), 7 states have call successors, (32), 4 states have call predecessors, (32), 5 states have return successors, (32), 5 states have call predecessors, (32), 7 states have call successors, (32) [2025-01-09 15:30:37,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:30:37,136 INFO L93 Difference]: Finished difference Result 319 states and 397 transitions. [2025-01-09 15:30:37,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-09 15:30:37,138 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 6.466666666666667) internal successors, (97), 16 states have internal predecessors, (97), 7 states have call successors, (32), 4 states have call predecessors, (32), 5 states have return successors, (32), 5 states have call predecessors, (32), 7 states have call successors, (32) Word has length 125 [2025-01-09 15:30:37,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:30:37,139 INFO L225 Difference]: With dead ends: 319 [2025-01-09 15:30:37,139 INFO L226 Difference]: Without dead ends: 163 [2025-01-09 15:30:37,140 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=191, Invalid=621, Unknown=0, NotChecked=0, Total=812 [2025-01-09 15:30:37,140 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 535 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 15:30:37,140 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 403 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 15:30:37,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2025-01-09 15:30:37,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2025-01-09 15:30:37,154 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 15:30:37,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 197 transitions. [2025-01-09 15:30:37,155 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 197 transitions. Word has length 125 [2025-01-09 15:30:37,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:30:37,155 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 197 transitions. [2025-01-09 15:30:37,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 6.466666666666667) internal successors, (97), 16 states have internal predecessors, (97), 7 states have call successors, (32), 4 states have call predecessors, (32), 5 states have return successors, (32), 5 states have call predecessors, (32), 7 states have call successors, (32) [2025-01-09 15:30:37,155 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 197 transitions. [2025-01-09 15:30:37,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2025-01-09 15:30:37,156 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:30:37,156 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 15:30:37,163 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 15:30:37,360 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 15:30:37,360 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:30:37,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:30:37,360 INFO L85 PathProgramCache]: Analyzing trace with hash 2065942149, now seen corresponding path program 1 times [2025-01-09 15:30:37,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:30:37,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298862974] [2025-01-09 15:30:37,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:30:37,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:30:37,374 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 126 statements into 1 equivalence classes. [2025-01-09 15:30:37,415 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 126 of 126 statements. [2025-01-09 15:30:37,415 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:30:37,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 15:30:37,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [440420365] [2025-01-09 15:30:37,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:30:37,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:30:37,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 15:30:37,420 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 15:30:37,422 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 15:30:37,501 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 126 statements into 1 equivalence classes. [2025-01-09 15:30:37,564 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 126 of 126 statements. [2025-01-09 15:30:37,565 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:30:37,565 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:30:37,567 INFO L256 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-01-09 15:30:37,570 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 15:30:38,028 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 15:30:38,109 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 15:30:38,176 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 15:30:38,238 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2025-01-09 15:30:38,239 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 15:30:38,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:30:38,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298862974] [2025-01-09 15:30:38,299 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 15:30:38,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440420365] [2025-01-09 15:30:38,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440420365] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 15:30:38,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-01-09 15:30:38,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2025-01-09 15:30:38,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880352076] [2025-01-09 15:30:38,299 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-01-09 15:30:38,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 15:30:38,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:30:38,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 15:30:38,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2025-01-09 15:30:38,300 INFO L87 Difference]: Start difference. First operand 159 states and 197 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-01-09 15:30:38,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:30:38,475 INFO L93 Difference]: Finished difference Result 417 states and 513 transitions. [2025-01-09 15:30:38,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 15:30:38,475 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 126 [2025-01-09 15:30:38,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:30:38,477 INFO L225 Difference]: With dead ends: 417 [2025-01-09 15:30:38,477 INFO L226 Difference]: Without dead ends: 261 [2025-01-09 15:30:38,477 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2025-01-09 15:30:38,478 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 101 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 15:30:38,478 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 289 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 15:30:38,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2025-01-09 15:30:38,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 249. [2025-01-09 15:30:38,502 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 15:30:38,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 303 transitions. [2025-01-09 15:30:38,503 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 303 transitions. Word has length 126 [2025-01-09 15:30:38,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:30:38,504 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 303 transitions. [2025-01-09 15:30:38,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-01-09 15:30:38,504 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 303 transitions. [2025-01-09 15:30:38,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-01-09 15:30:38,504 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:30:38,505 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 15:30:38,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-01-09 15:30:38,705 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 15:30:38,705 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:30:38,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:30:38,706 INFO L85 PathProgramCache]: Analyzing trace with hash -861187360, now seen corresponding path program 1 times [2025-01-09 15:30:38,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:30:38,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989349344] [2025-01-09 15:30:38,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:30:38,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:30:38,715 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-01-09 15:30:38,745 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-01-09 15:30:38,745 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:30:38,745 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 15:30:38,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1293897662] [2025-01-09 15:30:38,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:30:38,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:30:38,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 15:30:38,749 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 15:30:38,750 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 15:30:38,832 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-01-09 15:30:38,879 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-01-09 15:30:38,879 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:30:38,879 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:30:38,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-01-09 15:30:38,885 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 15:30:39,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-09 15:30:39,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-09 15:30:39,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-09 15:30:39,707 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2025-01-09 15:30:39,707 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 15:30:39,842 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 15:30:39,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:30:39,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989349344] [2025-01-09 15:30:39,842 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 15:30:39,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293897662] [2025-01-09 15:30:39,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293897662] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 15:30:39,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 15:30:39,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2025-01-09 15:30:39,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081776405] [2025-01-09 15:30:39,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:30:39,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 15:30:39,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:30:39,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 15:30:39,844 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-01-09 15:30:39,844 INFO L87 Difference]: Start difference. First operand 249 states and 303 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 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 15:30:40,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:30:40,077 INFO L93 Difference]: Finished difference Result 641 states and 765 transitions. [2025-01-09 15:30:40,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 15:30:40,078 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 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 15:30:40,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:30:40,080 INFO L225 Difference]: With dead ends: 641 [2025-01-09 15:30:40,081 INFO L226 Difference]: Without dead ends: 395 [2025-01-09 15:30:40,082 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-01-09 15:30:40,083 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 58 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 15:30:40,083 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 378 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 15:30:40,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2025-01-09 15:30:40,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 391. [2025-01-09 15:30:40,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 314 states have (on average 1.1337579617834395) internal successors, (356), 316 states have internal predecessors, (356), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2025-01-09 15:30:40,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 460 transitions. [2025-01-09 15:30:40,129 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 460 transitions. Word has length 127 [2025-01-09 15:30:40,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:30:40,129 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 460 transitions. [2025-01-09 15:30:40,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 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 15:30:40,129 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 460 transitions. [2025-01-09 15:30:40,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2025-01-09 15:30:40,130 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:30:40,130 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] [2025-01-09 15:30:40,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-09 15:30:40,330 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 15:30:40,331 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:30:40,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:30:40,331 INFO L85 PathProgramCache]: Analyzing trace with hash 45224986, now seen corresponding path program 1 times [2025-01-09 15:30:40,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:30:40,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691271273] [2025-01-09 15:30:40,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:30:40,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:30:40,340 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-01-09 15:30:40,376 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-01-09 15:30:40,377 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:30:40,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 15:30:40,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [499521755] [2025-01-09 15:30:40,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:30:40,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:30:40,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 15:30:40,381 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 15:30:40,383 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 15:30:40,482 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-01-09 15:30:40,533 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-01-09 15:30:40,533 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:30:40,534 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:30:40,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-01-09 15:30:40,539 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 15:30:40,876 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 15:30:40,939 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 15:30:40,993 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 15:30:41,056 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2025-01-09 15:30:41,056 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 15:30:41,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:30:41,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691271273] [2025-01-09 15:30:41,152 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 15:30:41,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499521755] [2025-01-09 15:30:41,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499521755] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 15:30:41,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-01-09 15:30:41,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2025-01-09 15:30:41,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712711886] [2025-01-09 15:30:41,153 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-01-09 15:30:41,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 15:30:41,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:30:41,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 15:30:41,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-01-09 15:30:41,154 INFO L87 Difference]: Start difference. First operand 391 states and 460 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-01-09 15:30:41,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:30:41,274 INFO L93 Difference]: Finished difference Result 777 states and 917 transitions. [2025-01-09 15:30:41,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 15:30:41,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 128 [2025-01-09 15:30:41,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:30:41,277 INFO L225 Difference]: With dead ends: 777 [2025-01-09 15:30:41,277 INFO L226 Difference]: Without dead ends: 389 [2025-01-09 15:30:41,278 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2025-01-09 15:30:41,278 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 42 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 15:30:41,278 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 363 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 15:30:41,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2025-01-09 15:30:41,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 382. [2025-01-09 15:30:41,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 305 states have (on average 1.1278688524590164) internal successors, (344), 307 states have internal predecessors, (344), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2025-01-09 15:30:41,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 448 transitions. [2025-01-09 15:30:41,325 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 448 transitions. Word has length 128 [2025-01-09 15:30:41,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:30:41,326 INFO L471 AbstractCegarLoop]: Abstraction has 382 states and 448 transitions. [2025-01-09 15:30:41,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-01-09 15:30:41,326 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 448 transitions. [2025-01-09 15:30:41,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-01-09 15:30:41,327 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:30:41,327 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 15:30:41,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-01-09 15:30:41,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-01-09 15:30:41,528 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:30:41,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:30:41,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1514792543, now seen corresponding path program 1 times [2025-01-09 15:30:41,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:30:41,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743869193] [2025-01-09 15:30:41,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:30:41,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:30:41,538 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-01-09 15:30:41,584 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 15:30:41,585 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:30:41,585 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:30:41,954 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 15:30:41,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:30:41,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743869193] [2025-01-09 15:30:41,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743869193] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:30:41,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:30:41,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-01-09 15:30:41,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074770927] [2025-01-09 15:30:41,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:30:41,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 15:30:41,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:30:41,956 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 15:30:41,956 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-01-09 15:30:41,956 INFO L87 Difference]: Start difference. First operand 382 states and 448 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 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 15:30:42,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:30:42,512 INFO L93 Difference]: Finished difference Result 814 states and 969 transitions. [2025-01-09 15:30:42,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 15:30:42,513 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 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 15:30:42,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:30:42,516 INFO L225 Difference]: With dead ends: 814 [2025-01-09 15:30:42,516 INFO L226 Difference]: Without dead ends: 577 [2025-01-09 15:30:42,517 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2025-01-09 15:30:42,517 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 169 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 15:30:42,517 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 738 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 15:30:42,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2025-01-09 15:30:42,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 455. [2025-01-09 15:30:42,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 378 states have (on average 1.1666666666666667) internal successors, (441), 380 states have internal predecessors, (441), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2025-01-09 15:30:42,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 545 transitions. [2025-01-09 15:30:42,580 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 545 transitions. Word has length 129 [2025-01-09 15:30:42,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:30:42,580 INFO L471 AbstractCegarLoop]: Abstraction has 455 states and 545 transitions. [2025-01-09 15:30:42,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 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 15:30:42,581 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 545 transitions. [2025-01-09 15:30:42,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-01-09 15:30:42,582 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:30:42,582 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 15:30:42,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-01-09 15:30:42,582 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:30:42,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:30:42,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1666256968, now seen corresponding path program 1 times [2025-01-09 15:30:42,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:30:42,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461704954] [2025-01-09 15:30:42,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:30:42,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:30:42,591 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-01-09 15:30:42,625 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 15:30:42,625 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:30:42,625 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:30:44,551 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 15:30:44,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:30:44,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461704954] [2025-01-09 15:30:44,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461704954] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:30:44,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:30:44,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2025-01-09 15:30:44,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648529449] [2025-01-09 15:30:44,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:30:44,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-09 15:30:44,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:30:44,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-09 15:30:44,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2025-01-09 15:30:44,553 INFO L87 Difference]: Start difference. First operand 455 states and 545 transitions. Second operand has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 20 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2025-01-09 15:30:47,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:30:47,829 INFO L93 Difference]: Finished difference Result 923 states and 1122 transitions. [2025-01-09 15:30:47,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-09 15:30:47,830 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 20 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2025-01-09 15:30:47,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:30:47,832 INFO L225 Difference]: With dead ends: 923 [2025-01-09 15:30:47,832 INFO L226 Difference]: Without dead ends: 613 [2025-01-09 15:30:47,832 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=159, Invalid=1247, Unknown=0, NotChecked=0, Total=1406 [2025-01-09 15:30:47,833 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 198 mSDsluCounter, 1445 mSDsCounter, 0 mSdLazyCounter, 1384 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 1576 SdHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-01-09 15:30:47,833 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 1576 Invalid, 1406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1384 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-01-09 15:30:47,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2025-01-09 15:30:47,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 500. [2025-01-09 15:30:47,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 423 states have (on average 1.177304964539007) internal successors, (498), 425 states have internal predecessors, (498), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2025-01-09 15:30:47,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 602 transitions. [2025-01-09 15:30:47,894 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 602 transitions. Word has length 129 [2025-01-09 15:30:47,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:30:47,894 INFO L471 AbstractCegarLoop]: Abstraction has 500 states and 602 transitions. [2025-01-09 15:30:47,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 20 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2025-01-09 15:30:47,894 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 602 transitions. [2025-01-09 15:30:47,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-01-09 15:30:47,895 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:30:47,895 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 15:30:47,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-01-09 15:30:47,895 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:30:47,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:30:47,896 INFO L85 PathProgramCache]: Analyzing trace with hash -2059283978, now seen corresponding path program 1 times [2025-01-09 15:30:47,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:30:47,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413191648] [2025-01-09 15:30:47,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:30:47,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:30:47,904 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-01-09 15:30:47,924 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 15:30:47,924 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:30:47,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:30:48,616 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 15:30:48,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:30:48,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413191648] [2025-01-09 15:30:48,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413191648] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:30:48,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:30:48,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-01-09 15:30:48,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188521340] [2025-01-09 15:30:48,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:30:48,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 15:30:48,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:30:48,618 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 15:30:48,618 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2025-01-09 15:30:48,618 INFO L87 Difference]: Start difference. First operand 500 states and 602 transitions. Second operand has 14 states, 13 states have (on average 4.0) internal successors, (52), 14 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2025-01-09 15:30:49,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:30:49,431 INFO L93 Difference]: Finished difference Result 1092 states and 1319 transitions. [2025-01-09 15:30:49,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 15:30:49,433 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.0) internal successors, (52), 14 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 129 [2025-01-09 15:30:49,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:30:49,436 INFO L225 Difference]: With dead ends: 1092 [2025-01-09 15:30:49,437 INFO L226 Difference]: Without dead ends: 737 [2025-01-09 15:30:49,438 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2025-01-09 15:30:49,439 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 426 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 15:30:49,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 801 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 15:30:49,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2025-01-09 15:30:49,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 536. [2025-01-09 15:30:49,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 459 states have (on average 1.1764705882352942) internal successors, (540), 461 states have internal predecessors, (540), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2025-01-09 15:30:49,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 644 transitions. [2025-01-09 15:30:49,517 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 644 transitions. Word has length 129 [2025-01-09 15:30:49,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:30:49,517 INFO L471 AbstractCegarLoop]: Abstraction has 536 states and 644 transitions. [2025-01-09 15:30:49,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.0) internal successors, (52), 14 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2025-01-09 15:30:49,517 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 644 transitions. [2025-01-09 15:30:49,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-01-09 15:30:49,518 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:30:49,518 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 15:30:49,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-01-09 15:30:49,518 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:30:49,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:30:49,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1256627105, now seen corresponding path program 1 times [2025-01-09 15:30:49,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:30:49,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598154321] [2025-01-09 15:30:49,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:30:49,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:30:49,527 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-01-09 15:30:49,548 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 15:30:49,548 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:30:49,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:30:49,701 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 15:30:49,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:30:49,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598154321] [2025-01-09 15:30:49,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598154321] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:30:49,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:30:49,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 15:30:49,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433940903] [2025-01-09 15:30:49,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:30:49,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 15:30:49,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:30:49,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 15:30:49,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 15:30:49,704 INFO L87 Difference]: Start difference. First operand 536 states and 644 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 15:30:49,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:30:49,960 INFO L93 Difference]: Finished difference Result 1152 states and 1393 transitions. [2025-01-09 15:30:49,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 15:30:49,961 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 15:30:49,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:30:49,964 INFO L225 Difference]: With dead ends: 1152 [2025-01-09 15:30:49,964 INFO L226 Difference]: Without dead ends: 761 [2025-01-09 15:30:49,965 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 15:30:49,966 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, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 15:30:49,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 506 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 15:30:49,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2025-01-09 15:30:50,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 547. [2025-01-09 15:30:50,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 470 states have (on average 1.1893617021276597) internal successors, (559), 472 states have internal predecessors, (559), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2025-01-09 15:30:50,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 663 transitions. [2025-01-09 15:30:50,053 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 663 transitions. Word has length 129 [2025-01-09 15:30:50,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:30:50,053 INFO L471 AbstractCegarLoop]: Abstraction has 547 states and 663 transitions. [2025-01-09 15:30:50,053 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 15:30:50,053 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 663 transitions. [2025-01-09 15:30:50,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-01-09 15:30:50,054 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:30:50,054 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 15:30:50,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-01-09 15:30:50,054 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:30:50,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:30:50,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1649654115, now seen corresponding path program 1 times [2025-01-09 15:30:50,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:30:50,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129175806] [2025-01-09 15:30:50,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:30:50,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:30:50,064 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-01-09 15:30:50,076 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 15:30:50,076 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:30:50,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:30:50,769 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 15:30:50,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:30:50,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129175806] [2025-01-09 15:30:50,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129175806] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:30:50,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:30:50,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-01-09 15:30:50,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941621419] [2025-01-09 15:30:50,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:30:50,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 15:30:50,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:30:50,771 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 15:30:50,771 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-01-09 15:30:50,772 INFO L87 Difference]: Start difference. First operand 547 states and 663 transitions. Second operand has 11 states, 10 states have (on average 5.2) 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), 3 states have call predecessors, (16), 4 states have call successors, (16) [2025-01-09 15:30:51,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:30:51,314 INFO L93 Difference]: Finished difference Result 1036 states and 1261 transitions. [2025-01-09 15:30:51,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 15:30:51,314 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.2) 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), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 129 [2025-01-09 15:30:51,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:30:51,317 INFO L225 Difference]: With dead ends: 1036 [2025-01-09 15:30:51,317 INFO L226 Difference]: Without dead ends: 634 [2025-01-09 15:30:51,318 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2025-01-09 15:30:51,318 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 247 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 15:30:51,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 580 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 15:30:51,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2025-01-09 15:30:51,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 544. [2025-01-09 15:30:51,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 467 states have (on average 1.164882226980728) internal successors, (544), 469 states have internal predecessors, (544), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2025-01-09 15:30:51,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 648 transitions. [2025-01-09 15:30:51,434 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 648 transitions. Word has length 129 [2025-01-09 15:30:51,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:30:51,434 INFO L471 AbstractCegarLoop]: Abstraction has 544 states and 648 transitions. [2025-01-09 15:30:51,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.2) 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), 3 states have call predecessors, (16), 4 states have call successors, (16) [2025-01-09 15:30:51,435 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 648 transitions. [2025-01-09 15:30:51,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-01-09 15:30:51,436 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:30:51,436 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 15:30:51,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-01-09 15:30:51,436 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:30:51,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:30:51,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1800270474, now seen corresponding path program 1 times [2025-01-09 15:30:51,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:30:51,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287283855] [2025-01-09 15:30:51,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:30:51,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:30:51,449 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-01-09 15:30:51,467 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 15:30:51,468 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:30:51,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:30:51,563 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 15:30:51,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:30:51,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287283855] [2025-01-09 15:30:51,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287283855] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:30:51,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:30:51,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 15:30:51,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18585306] [2025-01-09 15:30:51,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:30:51,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 15:30:51,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:30:51,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 15:30:51,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 15:30:51,565 INFO L87 Difference]: Start difference. First operand 544 states and 648 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 15:30:51,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:30:51,692 INFO L93 Difference]: Finished difference Result 907 states and 1092 transitions. [2025-01-09 15:30:51,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 15:30:51,693 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 15:30:51,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:30:51,695 INFO L225 Difference]: With dead ends: 907 [2025-01-09 15:30:51,695 INFO L226 Difference]: Without dead ends: 508 [2025-01-09 15:30:51,696 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 15:30:51,696 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 7 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 396 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 15:30:51,696 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 396 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 15:30:51,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2025-01-09 15:30:51,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 508. [2025-01-09 15:30:51,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 431 states have (on average 1.1624129930394431) internal successors, (501), 433 states have internal predecessors, (501), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2025-01-09 15:30:51,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 605 transitions. [2025-01-09 15:30:51,767 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 605 transitions. Word has length 129 [2025-01-09 15:30:51,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:30:51,767 INFO L471 AbstractCegarLoop]: Abstraction has 508 states and 605 transitions. [2025-01-09 15:30:51,767 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 15:30:51,767 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 605 transitions. [2025-01-09 15:30:51,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-01-09 15:30:51,768 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:30:51,768 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 15:30:51,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-01-09 15:30:51,768 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:30:51,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:30:51,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1019922486, now seen corresponding path program 1 times [2025-01-09 15:30:51,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:30:51,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383344611] [2025-01-09 15:30:51,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:30:51,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:30:51,777 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-01-09 15:30:51,805 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 15:30:51,805 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:30:51,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:30:52,611 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 15:30:52,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:30:52,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383344611] [2025-01-09 15:30:52,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383344611] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:30:52,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:30:52,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2025-01-09 15:30:52,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441651037] [2025-01-09 15:30:52,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:30:52,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-09 15:30:52,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:30:52,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-09 15:30:52,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2025-01-09 15:30:52,612 INFO L87 Difference]: Start difference. First operand 508 states and 605 transitions. Second operand has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 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 15:30:53,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:30:53,737 INFO L93 Difference]: Finished difference Result 1176 states and 1416 transitions. [2025-01-09 15:30:53,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-09 15:30:53,737 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 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 15:30:53,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:30:53,740 INFO L225 Difference]: With dead ends: 1176 [2025-01-09 15:30:53,740 INFO L226 Difference]: Without dead ends: 813 [2025-01-09 15:30:53,741 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=120, Invalid=872, Unknown=0, NotChecked=0, Total=992 [2025-01-09 15:30:53,741 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 158 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 1769 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-01-09 15:30:53,741 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 1769 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1326 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-01-09 15:30:53,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2025-01-09 15:30:53,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 586. [2025-01-09 15:30:53,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 509 states have (on average 1.1846758349705304) internal successors, (603), 511 states have internal predecessors, (603), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2025-01-09 15:30:53,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 707 transitions. [2025-01-09 15:30:53,822 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 707 transitions. Word has length 129 [2025-01-09 15:30:53,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:30:53,822 INFO L471 AbstractCegarLoop]: Abstraction has 586 states and 707 transitions. [2025-01-09 15:30:53,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 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 15:30:53,822 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 707 transitions. [2025-01-09 15:30:53,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-01-09 15:30:53,823 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:30:53,823 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 15:30:53,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-01-09 15:30:53,823 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:30:53,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:30:53,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1412949496, now seen corresponding path program 1 times [2025-01-09 15:30:53,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:30:53,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098225426] [2025-01-09 15:30:53,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:30:53,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:30:53,835 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-01-09 15:30:53,850 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 15:30:53,850 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:30:53,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:30:54,570 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 15:30:54,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:30:54,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098225426] [2025-01-09 15:30:54,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098225426] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:30:54,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:30:54,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-01-09 15:30:54,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039155687] [2025-01-09 15:30:54,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:30:54,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 15:30:54,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:30:54,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 15:30:54,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2025-01-09 15:30:54,572 INFO L87 Difference]: Start difference. First operand 586 states and 707 transitions. Second operand has 14 states, 13 states have (on average 4.0) internal successors, (52), 14 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2025-01-09 15:30:55,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:30:55,390 INFO L93 Difference]: Finished difference Result 1320 states and 1584 transitions. [2025-01-09 15:30:55,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-09 15:30:55,391 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.0) internal successors, (52), 14 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 129 [2025-01-09 15:30:55,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:30:55,394 INFO L225 Difference]: With dead ends: 1320 [2025-01-09 15:30:55,394 INFO L226 Difference]: Without dead ends: 879 [2025-01-09 15:30:55,394 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2025-01-09 15:30:55,395 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 506 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 15:30:55,395 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 814 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 15:30:55,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2025-01-09 15:30:55,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 673. [2025-01-09 15:30:55,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 577 states have (on average 1.1629116117850953) internal successors, (671), 580 states have internal predecessors, (671), 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 15:30:55,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 799 transitions. [2025-01-09 15:30:55,486 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 799 transitions. Word has length 129 [2025-01-09 15:30:55,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:30:55,487 INFO L471 AbstractCegarLoop]: Abstraction has 673 states and 799 transitions. [2025-01-09 15:30:55,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.0) internal successors, (52), 14 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2025-01-09 15:30:55,487 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 799 transitions. [2025-01-09 15:30:55,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-01-09 15:30:55,498 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:30:55,498 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 15:30:55,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-01-09 15:30:55,498 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:30:55,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:30:55,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1171386911, now seen corresponding path program 1 times [2025-01-09 15:30:55,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:30:55,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136066206] [2025-01-09 15:30:55,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:30:55,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:30:55,511 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-01-09 15:30:55,524 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 15:30:55,524 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:30:55,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:30:56,134 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 15:30:56,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:30:56,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136066206] [2025-01-09 15:30:56,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136066206] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:30:56,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:30:56,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-01-09 15:30:56,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515242417] [2025-01-09 15:30:56,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:30:56,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-09 15:30:56,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:30:56,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-09 15:30:56,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2025-01-09 15:30:56,136 INFO L87 Difference]: Start difference. First operand 673 states and 799 transitions. Second operand has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 12 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2025-01-09 15:30:56,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:30:56,726 INFO L93 Difference]: Finished difference Result 1423 states and 1684 transitions. [2025-01-09 15:30:56,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 15:30:56,727 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 12 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2025-01-09 15:30:56,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:30:56,730 INFO L225 Difference]: With dead ends: 1423 [2025-01-09 15:30:56,730 INFO L226 Difference]: Without dead ends: 895 [2025-01-09 15:30:56,731 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2025-01-09 15:30:56,731 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 291 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 15:30:56,731 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 666 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 15:30:56,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2025-01-09 15:30:56,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 670. [2025-01-09 15:30:56,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 574 states have (on average 1.1533101045296168) internal successors, (662), 577 states have internal predecessors, (662), 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 15:30:56,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 790 transitions. [2025-01-09 15:30:56,828 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 790 transitions. Word has length 129 [2025-01-09 15:30:56,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:30:56,828 INFO L471 AbstractCegarLoop]: Abstraction has 670 states and 790 transitions. [2025-01-09 15:30:56,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 12 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2025-01-09 15:30:56,828 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 790 transitions. [2025-01-09 15:30:56,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-01-09 15:30:56,829 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:30:56,829 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 15:30:56,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-01-09 15:30:56,830 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:30:56,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:30:56,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1153935992, now seen corresponding path program 1 times [2025-01-09 15:30:56,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:30:56,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471385196] [2025-01-09 15:30:56,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:30:56,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:30:56,839 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-01-09 15:30:56,852 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 15:30:56,852 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:30:56,852 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:30:57,096 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 15:30:57,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:30:57,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471385196] [2025-01-09 15:30:57,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471385196] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:30:57,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:30:57,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 15:30:57,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456973620] [2025-01-09 15:30:57,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:30:57,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 15:30:57,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:30:57,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 15:30:57,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-01-09 15:30:57,098 INFO L87 Difference]: Start difference. First operand 670 states and 790 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2025-01-09 15:30:57,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:30:57,380 INFO L93 Difference]: Finished difference Result 1159 states and 1376 transitions. [2025-01-09 15:30:57,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 15:30:57,381 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2025-01-09 15:30:57,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:30:57,383 INFO L225 Difference]: With dead ends: 1159 [2025-01-09 15:30:57,383 INFO L226 Difference]: Without dead ends: 634 [2025-01-09 15:30:57,384 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-01-09 15:30:57,385 INFO L435 NwaCegarLoop]: 93 mSDtfsCounter, 100 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 15:30:57,385 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 349 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 15:30:57,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2025-01-09 15:30:57,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2025-01-09 15:30:57,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 538 states have (on average 1.1505576208178439) internal successors, (619), 541 states have internal predecessors, (619), 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 15:30:57,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 747 transitions. [2025-01-09 15:30:57,478 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 747 transitions. Word has length 129 [2025-01-09 15:30:57,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:30:57,479 INFO L471 AbstractCegarLoop]: Abstraction has 634 states and 747 transitions. [2025-01-09 15:30:57,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2025-01-09 15:30:57,479 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 747 transitions. [2025-01-09 15:30:57,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-01-09 15:30:57,480 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:30:57,480 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 15:30:57,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-01-09 15:30:57,480 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:30:57,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:30:57,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1452752929, now seen corresponding path program 1 times [2025-01-09 15:30:57,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:30:57,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270347270] [2025-01-09 15:30:57,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:30:57,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:30:57,490 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-01-09 15:30:57,504 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 15:30:57,504 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:30:57,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:30:57,776 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 15:30:57,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:30:57,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270347270] [2025-01-09 15:30:57,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270347270] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:30:57,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:30:57,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 15:30:57,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841823208] [2025-01-09 15:30:57,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:30:57,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 15:30:57,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:30:57,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 15:30:57,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-01-09 15:30:57,778 INFO L87 Difference]: Start difference. First operand 634 states and 747 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2025-01-09 15:30:58,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:30:58,080 INFO L93 Difference]: Finished difference Result 1123 states and 1332 transitions. [2025-01-09 15:30:58,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 15:30:58,081 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2025-01-09 15:30:58,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:30:58,083 INFO L225 Difference]: With dead ends: 1123 [2025-01-09 15:30:58,083 INFO L226 Difference]: Without dead ends: 634 [2025-01-09 15:30:58,085 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2025-01-09 15:30:58,086 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 87 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 15:30:58,086 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 352 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 15:30:58,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2025-01-09 15:30:58,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2025-01-09 15:30:58,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 538 states have (on average 1.1486988847583643) internal successors, (618), 541 states have internal predecessors, (618), 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 15:30:58,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 746 transitions. [2025-01-09 15:30:58,228 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 746 transitions. Word has length 129 [2025-01-09 15:30:58,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:30:58,228 INFO L471 AbstractCegarLoop]: Abstraction has 634 states and 746 transitions. [2025-01-09 15:30:58,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2025-01-09 15:30:58,229 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 746 transitions. [2025-01-09 15:30:58,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-01-09 15:30:58,230 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:30:58,230 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 15:30:58,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-01-09 15:30:58,230 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:30:58,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:30:58,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1586766435, now seen corresponding path program 1 times [2025-01-09 15:30:58,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:30:58,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143883737] [2025-01-09 15:30:58,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:30:58,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:30:58,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-01-09 15:30:58,298 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 15:30:58,299 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:30:58,299 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:30:58,926 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 15:30:58,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:30:58,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143883737] [2025-01-09 15:30:58,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143883737] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:30:58,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:30:58,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-01-09 15:30:58,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118114077] [2025-01-09 15:30:58,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:30:58,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 15:30:58,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:30:58,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 15:30:58,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-01-09 15:30:58,928 INFO L87 Difference]: Start difference. First operand 634 states and 746 transitions. Second operand has 11 states, 10 states have (on average 5.2) 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), 3 states have call predecessors, (16), 4 states have call successors, (16) [2025-01-09 15:30:59,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:30:59,483 INFO L93 Difference]: Finished difference Result 1286 states and 1504 transitions. [2025-01-09 15:30:59,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 15:30:59,484 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.2) 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), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 129 [2025-01-09 15:30:59,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:30:59,487 INFO L225 Difference]: With dead ends: 1286 [2025-01-09 15:30:59,487 INFO L226 Difference]: Without dead ends: 797 [2025-01-09 15:30:59,488 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2025-01-09 15:30:59,488 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 234 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 15:30:59,489 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 606 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 15:30:59,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2025-01-09 15:30:59,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 571. [2025-01-09 15:30:59,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 475 states have (on average 1.1178947368421053) internal successors, (531), 478 states have internal predecessors, (531), 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 15:30:59,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 659 transitions. [2025-01-09 15:30:59,592 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 659 transitions. Word has length 129 [2025-01-09 15:30:59,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:30:59,592 INFO L471 AbstractCegarLoop]: Abstraction has 571 states and 659 transitions. [2025-01-09 15:30:59,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.2) 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), 3 states have call predecessors, (16), 4 states have call successors, (16) [2025-01-09 15:30:59,592 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 659 transitions. [2025-01-09 15:30:59,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-01-09 15:30:59,593 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:30:59,593 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 15:30:59,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-01-09 15:30:59,593 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:30:59,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:30:59,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1721628007, now seen corresponding path program 1 times [2025-01-09 15:30:59,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:30:59,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740021099] [2025-01-09 15:30:59,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:30:59,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:30:59,603 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-01-09 15:30:59,617 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 15:30:59,617 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:30:59,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:31:00,137 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 15:31:00,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:31:00,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740021099] [2025-01-09 15:31:00,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740021099] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:31:00,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:31:00,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-01-09 15:31:00,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13248040] [2025-01-09 15:31:00,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:31:00,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-09 15:31:00,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:31:00,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-09 15:31:00,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2025-01-09 15:31:00,138 INFO L87 Difference]: Start difference. First operand 571 states and 659 transitions. Second operand has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2025-01-09 15:31:00,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:31:00,868 INFO L93 Difference]: Finished difference Result 1127 states and 1310 transitions. [2025-01-09 15:31:00,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 15:31:00,868 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2025-01-09 15:31:00,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:31:00,871 INFO L225 Difference]: With dead ends: 1127 [2025-01-09 15:31:00,871 INFO L226 Difference]: Without dead ends: 701 [2025-01-09 15:31:00,872 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2025-01-09 15:31:00,872 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 215 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 15:31:00,872 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 957 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 15:31:00,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2025-01-09 15:31:00,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 606. [2025-01-09 15:31:00,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 510 states have (on average 1.1215686274509804) internal successors, (572), 513 states have internal predecessors, (572), 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 15:31:00,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 700 transitions. [2025-01-09 15:31:00,973 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 700 transitions. Word has length 129 [2025-01-09 15:31:00,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:31:00,974 INFO L471 AbstractCegarLoop]: Abstraction has 606 states and 700 transitions. [2025-01-09 15:31:00,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2025-01-09 15:31:00,974 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 700 transitions. [2025-01-09 15:31:00,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-01-09 15:31:00,976 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:31:00,977 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 15:31:00,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-01-09 15:31:00,977 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:31:00,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:31:00,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1480065422, now seen corresponding path program 1 times [2025-01-09 15:31:00,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:31:00,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657404223] [2025-01-09 15:31:00,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:31:00,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:31:00,987 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-01-09 15:31:00,996 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 15:31:00,996 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:31:00,996 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:31:01,169 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 15:31:01,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:31:01,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657404223] [2025-01-09 15:31:01,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657404223] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:31:01,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:31:01,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 15:31:01,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546454624] [2025-01-09 15:31:01,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:31:01,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 15:31:01,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:31:01,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 15:31:01,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 15:31:01,170 INFO L87 Difference]: Start difference. First operand 606 states and 700 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 15:31:01,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:31:01,444 INFO L93 Difference]: Finished difference Result 1181 states and 1365 transitions. [2025-01-09 15:31:01,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 15:31:01,444 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 15:31:01,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:31:01,446 INFO L225 Difference]: With dead ends: 1181 [2025-01-09 15:31:01,446 INFO L226 Difference]: Without dead ends: 720 [2025-01-09 15:31:01,447 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 15:31:01,447 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, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 15:31:01,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 508 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 15:31:01,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2025-01-09 15:31:01,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 606. [2025-01-09 15:31:01,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 510 states have (on average 1.115686274509804) internal successors, (569), 513 states have internal predecessors, (569), 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 15:31:01,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 697 transitions. [2025-01-09 15:31:01,544 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 697 transitions. Word has length 129 [2025-01-09 15:31:01,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:31:01,544 INFO L471 AbstractCegarLoop]: Abstraction has 606 states and 697 transitions. [2025-01-09 15:31:01,544 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 15:31:01,544 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 697 transitions. [2025-01-09 15:31:01,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-01-09 15:31:01,545 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:31:01,545 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] [2025-01-09 15:31:01,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-01-09 15:31:01,545 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:31:01,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:31:01,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1873092432, now seen corresponding path program 1 times [2025-01-09 15:31:01,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:31:01,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442975949] [2025-01-09 15:31:01,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:31:01,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:31:01,555 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-01-09 15:31:01,572 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 15:31:01,572 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:31:01,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:31:02,456 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 15:31:02,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:31:02,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442975949] [2025-01-09 15:31:02,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442975949] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:31:02,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:31:02,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2025-01-09 15:31:02,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41373761] [2025-01-09 15:31:02,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:31:02,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-09 15:31:02,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:31:02,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-09 15:31:02,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2025-01-09 15:31:02,457 INFO L87 Difference]: Start difference. First operand 606 states and 697 transitions. Second operand has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 20 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2025-01-09 15:31:03,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:31:03,552 INFO L93 Difference]: Finished difference Result 1162 states and 1339 transitions. [2025-01-09 15:31:03,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-09 15:31:03,556 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 20 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 129 [2025-01-09 15:31:03,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:31:03,558 INFO L225 Difference]: With dead ends: 1162 [2025-01-09 15:31:03,558 INFO L226 Difference]: Without dead ends: 701 [2025-01-09 15:31:03,559 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=177, Invalid=1155, Unknown=0, NotChecked=0, Total=1332 [2025-01-09 15:31:03,560 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 145 mSDsluCounter, 1511 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-09 15:31:03,560 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 1662 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-01-09 15:31:03,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2025-01-09 15:31:03,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 615. [2025-01-09 15:31:03,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 519 states have (on average 1.1136801541425818) internal successors, (578), 522 states have internal predecessors, (578), 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 15:31:03,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 706 transitions. [2025-01-09 15:31:03,657 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 706 transitions. Word has length 129 [2025-01-09 15:31:03,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:31:03,657 INFO L471 AbstractCegarLoop]: Abstraction has 615 states and 706 transitions. [2025-01-09 15:31:03,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 20 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2025-01-09 15:31:03,658 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 706 transitions. [2025-01-09 15:31:03,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-01-09 15:31:03,658 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:31:03,658 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 15:31:03,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-01-09 15:31:03,659 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:31:03,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:31:03,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1092744444, now seen corresponding path program 1 times [2025-01-09 15:31:03,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:31:03,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860281570] [2025-01-09 15:31:03,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:31:03,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:31:03,668 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-01-09 15:31:03,679 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 15:31:03,679 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:31:03,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:31:03,884 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 15:31:03,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:31:03,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860281570] [2025-01-09 15:31:03,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860281570] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:31:03,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:31:03,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 15:31:03,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385594942] [2025-01-09 15:31:03,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:31:03,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 15:31:03,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:31:03,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 15:31:03,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-01-09 15:31:03,885 INFO L87 Difference]: Start difference. First operand 615 states and 706 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2025-01-09 15:31:04,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:31:04,173 INFO L93 Difference]: Finished difference Result 1131 states and 1300 transitions. [2025-01-09 15:31:04,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 15:31:04,174 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2025-01-09 15:31:04,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:31:04,176 INFO L225 Difference]: With dead ends: 1131 [2025-01-09 15:31:04,176 INFO L226 Difference]: Without dead ends: 661 [2025-01-09 15:31:04,177 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-01-09 15:31:04,177 INFO L435 NwaCegarLoop]: 98 mSDtfsCounter, 112 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 15:31:04,177 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 359 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 15:31:04,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2025-01-09 15:31:04,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 615. [2025-01-09 15:31:04,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 519 states have (on average 1.1117533718689787) internal successors, (577), 522 states have internal predecessors, (577), 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 15:31:04,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 705 transitions. [2025-01-09 15:31:04,273 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 705 transitions. Word has length 129 [2025-01-09 15:31:04,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:31:04,273 INFO L471 AbstractCegarLoop]: Abstraction has 615 states and 705 transitions. [2025-01-09 15:31:04,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2025-01-09 15:31:04,274 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 705 transitions. [2025-01-09 15:31:04,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-01-09 15:31:04,274 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:31:04,274 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 15:31:04,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-01-09 15:31:04,274 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:31:04,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:31:04,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1226757950, now seen corresponding path program 1 times [2025-01-09 15:31:04,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:31:04,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661680373] [2025-01-09 15:31:04,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:31:04,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:31:04,283 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-01-09 15:31:04,307 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 15:31:04,307 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:31:04,307 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:31:05,372 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 15:31:05,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:31:05,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661680373] [2025-01-09 15:31:05,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661680373] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:31:05,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:31:05,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2025-01-09 15:31:05,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115308799] [2025-01-09 15:31:05,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:31:05,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-09 15:31:05,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:31:05,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-09 15:31:05,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2025-01-09 15:31:05,373 INFO L87 Difference]: Start difference. First operand 615 states and 705 transitions. Second operand has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 20 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2025-01-09 15:31:07,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:31:07,061 INFO L93 Difference]: Finished difference Result 1183 states and 1358 transitions. [2025-01-09 15:31:07,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-09 15:31:07,062 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 20 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2025-01-09 15:31:07,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:31:07,064 INFO L225 Difference]: With dead ends: 1183 [2025-01-09 15:31:07,065 INFO L226 Difference]: Without dead ends: 713 [2025-01-09 15:31:07,066 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=163, Invalid=1243, Unknown=0, NotChecked=0, Total=1406 [2025-01-09 15:31:07,066 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 152 mSDsluCounter, 1647 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-01-09 15:31:07,066 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 1799 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1417 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-01-09 15:31:07,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2025-01-09 15:31:07,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 615. [2025-01-09 15:31:07,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 519 states have (on average 1.1117533718689787) internal successors, (577), 522 states have internal predecessors, (577), 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 15:31:07,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 705 transitions. [2025-01-09 15:31:07,169 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 705 transitions. Word has length 129 [2025-01-09 15:31:07,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:31:07,169 INFO L471 AbstractCegarLoop]: Abstraction has 615 states and 705 transitions. [2025-01-09 15:31:07,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 20 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2025-01-09 15:31:07,169 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 705 transitions. [2025-01-09 15:31:07,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-01-09 15:31:07,170 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:31:07,170 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 15:31:07,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-01-09 15:31:07,170 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:31:07,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:31:07,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1378222375, now seen corresponding path program 1 times [2025-01-09 15:31:07,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:31:07,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429977987] [2025-01-09 15:31:07,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:31:07,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:31:07,180 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-01-09 15:31:07,193 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 15:31:07,194 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:31:07,194 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:31:07,698 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 15:31:07,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:31:07,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429977987] [2025-01-09 15:31:07,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429977987] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:31:07,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:31:07,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-01-09 15:31:07,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003847029] [2025-01-09 15:31:07,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:31:07,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-09 15:31:07,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:31:07,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-09 15:31:07,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2025-01-09 15:31:07,700 INFO L87 Difference]: Start difference. First operand 615 states and 705 transitions. Second operand has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2025-01-09 15:31:08,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:31:08,227 INFO L93 Difference]: Finished difference Result 1193 states and 1366 transitions. [2025-01-09 15:31:08,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 15:31:08,228 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 129 [2025-01-09 15:31:08,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:31:08,230 INFO L225 Difference]: With dead ends: 1193 [2025-01-09 15:31:08,230 INFO L226 Difference]: Without dead ends: 723 [2025-01-09 15:31:08,231 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2025-01-09 15:31:08,231 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 200 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 15:31:08,231 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 691 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 15:31:08,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2025-01-09 15:31:08,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 597. [2025-01-09 15:31:08,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 501 states have (on average 1.1037924151696608) internal successors, (553), 504 states have internal predecessors, (553), 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 15:31:08,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 681 transitions. [2025-01-09 15:31:08,332 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 681 transitions. Word has length 129 [2025-01-09 15:31:08,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:31:08,332 INFO L471 AbstractCegarLoop]: Abstraction has 597 states and 681 transitions. [2025-01-09 15:31:08,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2025-01-09 15:31:08,332 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 681 transitions. [2025-01-09 15:31:08,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-01-09 15:31:08,333 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:31:08,333 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 15:31:08,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-01-09 15:31:08,333 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:31:08,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:31:08,334 INFO L85 PathProgramCache]: Analyzing trace with hash -788044106, now seen corresponding path program 1 times [2025-01-09 15:31:08,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:31:08,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210147974] [2025-01-09 15:31:08,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:31:08,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:31:08,346 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-01-09 15:31:08,351 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-01-09 15:31:08,351 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:31:08,351 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:31:08,395 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 15:31:08,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:31:08,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210147974] [2025-01-09 15:31:08,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210147974] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:31:08,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:31:08,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 15:31:08,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448040890] [2025-01-09 15:31:08,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:31:08,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 15:31:08,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:31:08,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 15:31:08,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 15:31:08,397 INFO L87 Difference]: Start difference. First operand 597 states and 681 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 15:31:08,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:31:08,563 INFO L93 Difference]: Finished difference Result 1128 states and 1280 transitions. [2025-01-09 15:31:08,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 15:31:08,564 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 15:31:08,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:31:08,566 INFO L225 Difference]: With dead ends: 1128 [2025-01-09 15:31:08,566 INFO L226 Difference]: Without dead ends: 676 [2025-01-09 15:31:08,567 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 15:31:08,567 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 15:31:08,567 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 15:31:08,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2025-01-09 15:31:08,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 597. [2025-01-09 15:31:08,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 501 states have (on average 1.0798403193612773) internal successors, (541), 504 states have internal predecessors, (541), 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 15:31:08,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 669 transitions. [2025-01-09 15:31:08,673 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 669 transitions. Word has length 131 [2025-01-09 15:31:08,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:31:08,673 INFO L471 AbstractCegarLoop]: Abstraction has 597 states and 669 transitions. [2025-01-09 15:31:08,673 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 15:31:08,673 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 669 transitions. [2025-01-09 15:31:08,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2025-01-09 15:31:08,674 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:31:08,674 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 15:31:08,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2025-01-09 15:31:08,674 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:31:08,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:31:08,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1307419765, now seen corresponding path program 1 times [2025-01-09 15:31:08,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:31:08,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659253298] [2025-01-09 15:31:08,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:31:08,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:31:08,684 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-01-09 15:31:08,726 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-01-09 15:31:08,727 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:31:08,727 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:31:09,742 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 15:31:09,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:31:09,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659253298] [2025-01-09 15:31:09,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659253298] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 15:31:09,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750665021] [2025-01-09 15:31:09,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:31:09,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:31:09,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 15:31:09,744 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 15:31:09,745 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 15:31:09,859 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-01-09 15:31:09,920 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-01-09 15:31:09,920 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:31:09,920 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:31:09,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-01-09 15:31:09,926 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 15:31:09,938 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 7 treesize of output 3 [2025-01-09 15:31:10,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-09 15:31:10,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2025-01-09 15:31:11,225 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 40 proven. 115 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2025-01-09 15:31:11,225 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 15:31:11,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750665021] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 15:31:11,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 15:31:11,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13] total 30 [2025-01-09 15:31:11,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904061918] [2025-01-09 15:31:11,609 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 15:31:11,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-01-09 15:31:11,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:31:11,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-01-09 15:31:11,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1389, Unknown=0, NotChecked=0, Total=1560 [2025-01-09 15:31:11,610 INFO L87 Difference]: Start difference. First operand 597 states and 669 transitions. Second operand has 30 states, 26 states have (on average 4.538461538461538) internal successors, (118), 26 states have internal predecessors, (118), 9 states have call successors, (32), 4 states have call predecessors, (32), 6 states have return successors, (32), 8 states have call predecessors, (32), 9 states have call successors, (32) [2025-01-09 15:31:13,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:31:13,526 INFO L93 Difference]: Finished difference Result 1192 states and 1327 transitions. [2025-01-09 15:31:13,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-01-09 15:31:13,527 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 26 states have (on average 4.538461538461538) internal successors, (118), 26 states have internal predecessors, (118), 9 states have call successors, (32), 4 states have call predecessors, (32), 6 states have return successors, (32), 8 states have call predecessors, (32), 9 states have call successors, (32) Word has length 136 [2025-01-09 15:31:13,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:31:13,529 INFO L225 Difference]: With dead ends: 1192 [2025-01-09 15:31:13,529 INFO L226 Difference]: Without dead ends: 740 [2025-01-09 15:31:13,531 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=707, Invalid=3583, Unknown=0, NotChecked=0, Total=4290 [2025-01-09 15:31:13,531 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 540 mSDsluCounter, 1175 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 1648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-01-09 15:31:13,531 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 1270 Invalid, 1648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-01-09 15:31:13,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2025-01-09 15:31:13,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 623. [2025-01-09 15:31:13,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 504 states have (on average 1.0714285714285714) internal successors, (540), 508 states have internal predecessors, (540), 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 15:31:13,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 692 transitions. [2025-01-09 15:31:13,678 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 692 transitions. Word has length 136 [2025-01-09 15:31:13,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:31:13,678 INFO L471 AbstractCegarLoop]: Abstraction has 623 states and 692 transitions. [2025-01-09 15:31:13,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 26 states have (on average 4.538461538461538) internal successors, (118), 26 states have internal predecessors, (118), 9 states have call successors, (32), 4 states have call predecessors, (32), 6 states have return successors, (32), 8 states have call predecessors, (32), 9 states have call successors, (32) [2025-01-09 15:31:13,678 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 692 transitions. [2025-01-09 15:31:13,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2025-01-09 15:31:13,679 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:31:13,679 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 15:31:13,687 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 15:31:13,879 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,SelfDestructingSolverStorable31 [2025-01-09 15:31:13,880 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:31:13,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:31:13,880 INFO L85 PathProgramCache]: Analyzing trace with hash 568983787, now seen corresponding path program 1 times [2025-01-09 15:31:13,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:31:13,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643626029] [2025-01-09 15:31:13,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:31:13,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:31:13,890 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-01-09 15:31:13,957 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-01-09 15:31:13,957 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:31:13,957 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 15:31:13,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [168196779] [2025-01-09 15:31:13,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:31:13,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:31:13,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 15:31:13,961 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 15:31:13,962 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 15:31:14,081 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-01-09 15:31:14,151 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-01-09 15:31:14,151 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:31:14,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:31:14,154 INFO L256 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 62 conjuncts are in the unsatisfiable core [2025-01-09 15:31:14,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 15:31:14,896 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 15:31:15,040 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 23 treesize of output 3 [2025-01-09 15:31:15,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-09 15:31:15,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-09 15:31:15,579 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 15:31:15,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 26 [2025-01-09 15:31:15,594 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 208 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2025-01-09 15:31:15,594 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 15:31:15,764 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 15:31:15,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:31:15,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643626029] [2025-01-09 15:31:15,764 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 15:31:15,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168196779] [2025-01-09 15:31:15,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168196779] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 15:31:15,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 15:31:15,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2025-01-09 15:31:15,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117333742] [2025-01-09 15:31:15,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:31:15,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 15:31:15,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:31:15,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 15:31:15,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-01-09 15:31:15,765 INFO L87 Difference]: Start difference. First operand 623 states and 692 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 15:31:16,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:31:16,167 INFO L93 Difference]: Finished difference Result 1301 states and 1440 transitions. [2025-01-09 15:31:16,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 15:31:16,168 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 15:31:16,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:31:16,171 INFO L225 Difference]: With dead ends: 1301 [2025-01-09 15:31:16,171 INFO L226 Difference]: Without dead ends: 734 [2025-01-09 15:31:16,171 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2025-01-09 15:31:16,172 INFO L435 NwaCegarLoop]: 163 mSDtfsCounter, 98 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 15:31:16,172 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 387 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 15:31:16,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2025-01-09 15:31:16,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 511. [2025-01-09 15:31:16,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 422 states have (on average 1.0592417061611374) internal successors, (447), 424 states have internal predecessors, (447), 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 15:31:16,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 559 transitions. [2025-01-09 15:31:16,314 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 559 transitions. Word has length 136 [2025-01-09 15:31:16,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:31:16,314 INFO L471 AbstractCegarLoop]: Abstraction has 511 states and 559 transitions. [2025-01-09 15:31:16,314 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 15:31:16,314 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 559 transitions. [2025-01-09 15:31:16,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-01-09 15:31:16,315 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:31:16,315 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 15:31:16,323 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 15:31:16,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:31:16,516 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:31:16,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:31:16,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1362134720, now seen corresponding path program 1 times [2025-01-09 15:31:16,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:31:16,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932425763] [2025-01-09 15:31:16,516 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:31:16,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:31:16,526 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-01-09 15:31:16,573 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-01-09 15:31:16,573 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:31:16,574 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 15:31:16,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [799512509] [2025-01-09 15:31:16,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:31:16,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:31:16,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 15:31:16,578 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 15:31:16,579 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 15:31:16,685 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-01-09 15:31:16,758 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-01-09 15:31:16,758 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:31:16,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:31:16,760 INFO L256 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-01-09 15:31:16,767 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 15:31:16,775 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 7 treesize of output 3 [2025-01-09 15:31:17,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-09 15:31:17,331 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 15:31:17,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 28 [2025-01-09 15:31:17,348 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 15:31:17,348 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 15:31:17,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:31:17,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932425763] [2025-01-09 15:31:17,348 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 15:31:17,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799512509] [2025-01-09 15:31:17,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799512509] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:31:17,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:31:17,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 15:31:17,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347355059] [2025-01-09 15:31:17,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:31:17,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 15:31:17,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:31:17,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 15:31:17,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-01-09 15:31:17,349 INFO L87 Difference]: Start difference. First operand 511 states and 559 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) 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 15:31:18,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:31:18,037 INFO L93 Difference]: Finished difference Result 976 states and 1069 transitions. [2025-01-09 15:31:18,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 15:31:18,038 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) 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 15:31:18,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:31:18,040 INFO L225 Difference]: With dead ends: 976 [2025-01-09 15:31:18,040 INFO L226 Difference]: Without dead ends: 625 [2025-01-09 15:31:18,040 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-01-09 15:31:18,041 INFO L435 NwaCegarLoop]: 153 mSDtfsCounter, 109 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 15:31:18,041 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 525 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 15:31:18,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2025-01-09 15:31:18,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 511. [2025-01-09 15:31:18,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 422 states have (on average 1.0545023696682465) internal successors, (445), 424 states have internal predecessors, (445), 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 15:31:18,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 557 transitions. [2025-01-09 15:31:18,182 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 557 transitions. Word has length 138 [2025-01-09 15:31:18,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:31:18,182 INFO L471 AbstractCegarLoop]: Abstraction has 511 states and 557 transitions. [2025-01-09 15:31:18,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) 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 15:31:18,182 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 557 transitions. [2025-01-09 15:31:18,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-01-09 15:31:18,183 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:31:18,183 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 15:31:18,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-01-09 15:31:18,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:31:18,384 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:31:18,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:31:18,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1246468342, now seen corresponding path program 1 times [2025-01-09 15:31:18,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:31:18,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818683863] [2025-01-09 15:31:18,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:31:18,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:31:18,397 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-01-09 15:31:18,450 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-01-09 15:31:18,451 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:31:18,451 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 15:31:18,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1442491285] [2025-01-09 15:31:18,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:31:18,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 15:31:18,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 15:31:18,455 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 15:31:18,457 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 15:31:18,573 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-01-09 15:31:18,658 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-01-09 15:31:18,658 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:31:18,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:31:18,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-01-09 15:31:18,664 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 15:31:18,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-09 15:31:19,017 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 15:31:19,078 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 15:31:19,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-09 15:31:19,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-09 15:31:19,259 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 15:31:19,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 28 [2025-01-09 15:31:19,273 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2025-01-09 15:31:19,273 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 15:31:19,432 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 15:31:19,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:31:19,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818683863] [2025-01-09 15:31:19,432 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 15:31:19,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442491285] [2025-01-09 15:31:19,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442491285] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 15:31:19,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 15:31:19,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2025-01-09 15:31:19,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802866717] [2025-01-09 15:31:19,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:31:19,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 15:31:19,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:31:19,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 15:31:19,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2025-01-09 15:31:19,433 INFO L87 Difference]: Start difference. First operand 511 states and 557 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 15:31:19,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:31:19,834 INFO L93 Difference]: Finished difference Result 1015 states and 1105 transitions. [2025-01-09 15:31:19,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 15:31:19,835 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 15:31:19,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:31:19,837 INFO L225 Difference]: With dead ends: 1015 [2025-01-09 15:31:19,837 INFO L226 Difference]: Without dead ends: 664 [2025-01-09 15:31:19,838 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2025-01-09 15:31:19,838 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 114 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 15:31:19,838 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 404 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 15:31:19,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2025-01-09 15:31:19,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 511. [2025-01-09 15:31:19,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 422 states have (on average 1.0497630331753554) internal successors, (443), 424 states have internal predecessors, (443), 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 15:31:19,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 555 transitions. [2025-01-09 15:31:19,990 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 555 transitions. Word has length 138 [2025-01-09 15:31:19,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:31:19,990 INFO L471 AbstractCegarLoop]: Abstraction has 511 states and 555 transitions. [2025-01-09 15:31:19,990 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 15:31:19,990 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 555 transitions. [2025-01-09 15:31:19,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-01-09 15:31:19,991 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:31:19,991 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 15:31:19,999 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 15:31:20,191 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,SelfDestructingSolverStorable34 [2025-01-09 15:31:20,191 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:31:20,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:31:20,192 INFO L85 PathProgramCache]: Analyzing trace with hash -521748075, now seen corresponding path program 1 times [2025-01-09 15:31:20,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:31:20,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318828831] [2025-01-09 15:31:20,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:31:20,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:31:20,202 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-01-09 15:31:20,230 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-01-09 15:31:20,230 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:31:20,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:31:20,919 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 15:31:20,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:31:20,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318828831] [2025-01-09 15:31:20,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318828831] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:31:20,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:31:20,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-01-09 15:31:20,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062864812] [2025-01-09 15:31:20,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:31:20,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 15:31:20,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:31:20,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 15:31:20,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2025-01-09 15:31:20,920 INFO L87 Difference]: Start difference. First operand 511 states and 555 transitions. Second operand has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 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 15:31:21,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:31:21,501 INFO L93 Difference]: Finished difference Result 613 states and 661 transitions. [2025-01-09 15:31:21,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-09 15:31:21,502 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 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 15:31:21,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:31:21,504 INFO L225 Difference]: With dead ends: 613 [2025-01-09 15:31:21,504 INFO L226 Difference]: Without dead ends: 611 [2025-01-09 15:31:21,504 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2025-01-09 15:31:21,505 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 113 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1293 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 15:31:21,505 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 1293 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 15:31:21,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2025-01-09 15:31:21,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 579. [2025-01-09 15:31:21,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 490 states have (on average 1.046938775510204) internal successors, (513), 492 states have internal predecessors, (513), 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 15:31:21,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 625 transitions. [2025-01-09 15:31:21,643 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 625 transitions. Word has length 142 [2025-01-09 15:31:21,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:31:21,643 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 625 transitions. [2025-01-09 15:31:21,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 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 15:31:21,644 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 625 transitions. [2025-01-09 15:31:21,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-01-09 15:31:21,644 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:31:21,644 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 15:31:21,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2025-01-09 15:31:21,644 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:31:21,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:31:21,645 INFO L85 PathProgramCache]: Analyzing trace with hash 158310295, now seen corresponding path program 1 times [2025-01-09 15:31:21,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:31:21,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540890015] [2025-01-09 15:31:21,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:31:21,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:31:21,655 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-01-09 15:31:21,675 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-01-09 15:31:21,675 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:31:21,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:31:22,199 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 15:31:22,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:31:22,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540890015] [2025-01-09 15:31:22,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540890015] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:31:22,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:31:22,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-01-09 15:31:22,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217685934] [2025-01-09 15:31:22,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:31:22,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 15:31:22,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:31:22,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 15:31:22,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-01-09 15:31:22,200 INFO L87 Difference]: Start difference. First operand 579 states and 625 transitions. Second operand has 11 states, 9 states have (on average 7.222222222222222) internal successors, (65), 10 states have internal predecessors, (65), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2025-01-09 15:31:22,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:31:22,628 INFO L93 Difference]: Finished difference Result 1038 states and 1116 transitions. [2025-01-09 15:31:22,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 15:31:22,628 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.222222222222222) internal successors, (65), 10 states have internal predecessors, (65), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 142 [2025-01-09 15:31:22,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:31:22,630 INFO L225 Difference]: With dead ends: 1038 [2025-01-09 15:31:22,630 INFO L226 Difference]: Without dead ends: 619 [2025-01-09 15:31:22,631 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2025-01-09 15:31:22,631 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 307 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 15:31:22,631 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 554 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 15:31:22,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2025-01-09 15:31:22,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 579. [2025-01-09 15:31:22,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 490 states have (on average 1.042857142857143) internal successors, (511), 492 states have internal predecessors, (511), 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 15:31:22,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 623 transitions. [2025-01-09 15:31:22,782 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 623 transitions. Word has length 142 [2025-01-09 15:31:22,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:31:22,782 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 623 transitions. [2025-01-09 15:31:22,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.222222222222222) internal successors, (65), 10 states have internal predecessors, (65), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2025-01-09 15:31:22,782 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 623 transitions. [2025-01-09 15:31:22,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-01-09 15:31:22,783 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:31:22,783 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 15:31:22,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2025-01-09 15:31:22,783 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:31:22,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:31:22,784 INFO L85 PathProgramCache]: Analyzing trace with hash -499115821, now seen corresponding path program 1 times [2025-01-09 15:31:22,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:31:22,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095445] [2025-01-09 15:31:22,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:31:22,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:31:22,794 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-01-09 15:31:22,812 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-01-09 15:31:22,812 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:31:22,812 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:31:23,258 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 15:31:23,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:31:23,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095445] [2025-01-09 15:31:23,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095445] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:31:23,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:31:23,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-01-09 15:31:23,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238446634] [2025-01-09 15:31:23,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:31:23,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-09 15:31:23,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:31:23,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-09 15:31:23,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2025-01-09 15:31:23,259 INFO L87 Difference]: Start difference. First operand 579 states and 623 transitions. Second operand has 12 states, 10 states have (on average 6.5) internal successors, (65), 12 states have internal predecessors, (65), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 5 states have call successors, (16) [2025-01-09 15:31:23,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:31:23,668 INFO L93 Difference]: Finished difference Result 1028 states and 1102 transitions. [2025-01-09 15:31:23,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 15:31:23,668 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 6.5) internal successors, (65), 12 states have internal predecessors, (65), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 5 states have call successors, (16) Word has length 142 [2025-01-09 15:31:23,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:31:23,670 INFO L225 Difference]: With dead ends: 1028 [2025-01-09 15:31:23,670 INFO L226 Difference]: Without dead ends: 609 [2025-01-09 15:31:23,671 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2025-01-09 15:31:23,671 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 284 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 15:31:23,671 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 547 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 15:31:23,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2025-01-09 15:31:23,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 579. [2025-01-09 15:31:23,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 490 states have (on average 1.0387755102040817) internal successors, (509), 492 states have internal predecessors, (509), 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 15:31:23,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 621 transitions. [2025-01-09 15:31:23,812 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 621 transitions. Word has length 142 [2025-01-09 15:31:23,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:31:23,812 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 621 transitions. [2025-01-09 15:31:23,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 6.5) internal successors, (65), 12 states have internal predecessors, (65), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 5 states have call successors, (16) [2025-01-09 15:31:23,813 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 621 transitions. [2025-01-09 15:31:23,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-01-09 15:31:23,813 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 15:31:23,813 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 15:31:23,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2025-01-09 15:31:23,813 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 15:31:23,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 15:31:23,814 INFO L85 PathProgramCache]: Analyzing trace with hash 180942549, now seen corresponding path program 1 times [2025-01-09 15:31:23,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 15:31:23,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109585851] [2025-01-09 15:31:23,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 15:31:23,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 15:31:23,822 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-01-09 15:31:23,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-01-09 15:31:23,846 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 15:31:23,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 15:31:24,128 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 15:31:24,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 15:31:24,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109585851] [2025-01-09 15:31:24,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109585851] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 15:31:24,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 15:31:24,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-01-09 15:31:24,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510264397] [2025-01-09 15:31:24,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 15:31:24,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-09 15:31:24,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 15:31:24,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-09 15:31:24,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2025-01-09 15:31:24,129 INFO L87 Difference]: Start difference. First operand 579 states and 621 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 15:31:24,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 15:31:24,386 INFO L93 Difference]: Finished difference Result 585 states and 627 transitions. [2025-01-09 15:31:24,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-09 15:31:24,387 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 15:31:24,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 15:31:24,388 INFO L225 Difference]: With dead ends: 585 [2025-01-09 15:31:24,388 INFO L226 Difference]: Without dead ends: 0 [2025-01-09 15:31:24,388 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2025-01-09 15:31:24,389 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 19 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1425 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 15:31:24,389 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 1425 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 15:31:24,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-01-09 15:31:24,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-01-09 15:31:24,389 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 15:31:24,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-01-09 15:31:24,389 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 142 [2025-01-09 15:31:24,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 15:31:24,389 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-01-09 15:31:24,389 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 15:31:24,389 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-01-09 15:31:24,390 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-01-09 15:31:24,392 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-01-09 15:31:24,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2025-01-09 15:31:24,394 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] [2025-01-09 15:31:24,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.