./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/s52if.c --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/array-fpi/s52if.c -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 adec1fb94d6967416fde705f346e339b2564f221f40b7d50198f8ed5e502aa54 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-08 22:44:22,723 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-08 22:44:22,777 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-08 22:44:22,784 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-08 22:44:22,784 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-08 22:44:22,816 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-08 22:44:22,817 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-08 22:44:22,817 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-08 22:44:22,817 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-08 22:44:22,818 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-08 22:44:22,818 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-08 22:44:22,818 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-08 22:44:22,818 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-08 22:44:22,818 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-08 22:44:22,818 INFO L153 SettingsManager]: * Use SBE=true [2025-01-08 22:44:22,818 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-08 22:44:22,818 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-08 22:44:22,818 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-08 22:44:22,818 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-08 22:44:22,818 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-08 22:44:22,819 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-08 22:44:22,819 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-08 22:44:22,819 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-08 22:44:22,819 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-08 22:44:22,819 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-08 22:44:22,819 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-08 22:44:22,819 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-08 22:44:22,819 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-08 22:44:22,819 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-08 22:44:22,819 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:44:22,819 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:44:22,819 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:44:22,819 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:44:22,819 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-08 22:44:22,819 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:44:22,819 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:44:22,819 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:44:22,819 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:44:22,819 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-08 22:44:22,819 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-08 22:44:22,819 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-08 22:44:22,819 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-08 22:44:22,819 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-08 22:44:22,820 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-08 22:44:22,820 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-08 22:44:22,820 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-08 22:44:22,820 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-08 22:44:22,820 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-08 22:44:22,820 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 -> adec1fb94d6967416fde705f346e339b2564f221f40b7d50198f8ed5e502aa54 [2025-01-08 22:44:23,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-08 22:44:23,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-08 22:44:23,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-08 22:44:23,080 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-08 22:44:23,080 INFO L274 PluginConnector]: CDTParser initialized [2025-01-08 22:44:23,081 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/s52if.c [2025-01-08 22:44:24,246 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ff295eb4a/0a0a5bb383a84a59972b7825484fa9cc/FLAG950dfcabb [2025-01-08 22:44:24,511 INFO L384 CDTParser]: Found 1 translation units. [2025-01-08 22:44:24,512 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-fpi/s52if.c [2025-01-08 22:44:24,524 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ff295eb4a/0a0a5bb383a84a59972b7825484fa9cc/FLAG950dfcabb [2025-01-08 22:44:24,541 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ff295eb4a/0a0a5bb383a84a59972b7825484fa9cc [2025-01-08 22:44:24,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-08 22:44:24,545 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-08 22:44:24,546 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-08 22:44:24,546 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-08 22:44:24,549 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-08 22:44:24,550 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:44:24" (1/1) ... [2025-01-08 22:44:24,550 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e2d95f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:44:24, skipping insertion in model container [2025-01-08 22:44:24,551 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:44:24" (1/1) ... [2025-01-08 22:44:24,562 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-08 22:44:24,676 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/array-fpi/s52if.c[588,601] [2025-01-08 22:44:24,696 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:44:24,706 INFO L200 MainTranslator]: Completed pre-run [2025-01-08 22:44:24,714 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/array-fpi/s52if.c[588,601] [2025-01-08 22:44:24,725 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:44:24,739 INFO L204 MainTranslator]: Completed translation [2025-01-08 22:44:24,740 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:44:24 WrapperNode [2025-01-08 22:44:24,741 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-08 22:44:24,742 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-08 22:44:24,742 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-08 22:44:24,742 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-08 22:44:24,747 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:44:24" (1/1) ... [2025-01-08 22:44:24,755 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:44:24" (1/1) ... [2025-01-08 22:44:24,773 INFO L138 Inliner]: procedures = 17, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 89 [2025-01-08 22:44:24,775 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-08 22:44:24,775 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-08 22:44:24,775 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-08 22:44:24,775 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-08 22:44:24,783 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:44:24" (1/1) ... [2025-01-08 22:44:24,783 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:44:24" (1/1) ... [2025-01-08 22:44:24,785 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:44:24" (1/1) ... [2025-01-08 22:44:24,800 INFO L175 MemorySlicer]: Split 25 memory accesses to 4 slices as follows [2, 8, 9, 6]. 36 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0, 0]. The 6 writes are split as follows [0, 0, 3, 3]. [2025-01-08 22:44:24,800 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:44:24" (1/1) ... [2025-01-08 22:44:24,800 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:44:24" (1/1) ... [2025-01-08 22:44:24,803 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:44:24" (1/1) ... [2025-01-08 22:44:24,806 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:44:24" (1/1) ... [2025-01-08 22:44:24,808 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:44:24" (1/1) ... [2025-01-08 22:44:24,809 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:44:24" (1/1) ... [2025-01-08 22:44:24,809 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:44:24" (1/1) ... [2025-01-08 22:44:24,810 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-08 22:44:24,811 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-08 22:44:24,811 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-08 22:44:24,811 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-08 22:44:24,812 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:44:24" (1/1) ... [2025-01-08 22:44:24,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:44:24,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:44:24,841 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) [2025-01-08 22:44:24,843 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 [2025-01-08 22:44:24,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-08 22:44:24,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-08 22:44:24,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-08 22:44:24,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-08 22:44:24,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-01-08 22:44:24,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-08 22:44:24,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-08 22:44:24,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-08 22:44:24,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-08 22:44:24,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-01-08 22:44:24,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-08 22:44:24,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-08 22:44:24,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-08 22:44:24,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-08 22:44:24,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-08 22:44:24,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-08 22:44:24,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-01-08 22:44:24,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-08 22:44:24,923 INFO L234 CfgBuilder]: Building ICFG [2025-01-08 22:44:24,925 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-08 22:44:25,061 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2025-01-08 22:44:25,062 INFO L283 CfgBuilder]: Performing block encoding [2025-01-08 22:44:25,070 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-08 22:44:25,070 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-08 22:44:25,071 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:44:25 BoogieIcfgContainer [2025-01-08 22:44:25,071 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-08 22:44:25,072 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-08 22:44:25,072 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-08 22:44:25,076 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-08 22:44:25,076 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.01 10:44:24" (1/3) ... [2025-01-08 22:44:25,077 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@604b7037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:44:25, skipping insertion in model container [2025-01-08 22:44:25,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:44:24" (2/3) ... [2025-01-08 22:44:25,078 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@604b7037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:44:25, skipping insertion in model container [2025-01-08 22:44:25,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:44:25" (3/3) ... [2025-01-08 22:44:25,081 INFO L128 eAbstractionObserver]: Analyzing ICFG s52if.c [2025-01-08 22:44:25,092 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-08 22:44:25,094 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG s52if.c that has 1 procedures, 19 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-01-08 22:44:25,133 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-08 22:44:25,141 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;@1d2ec3e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-08 22:44:25,141 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-08 22:44:25,144 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 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) [2025-01-08 22:44:25,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-08 22:44:25,147 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:44:25,148 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:44:25,148 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:44:25,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:44:25,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1096712901, now seen corresponding path program 1 times [2025-01-08 22:44:25,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:44:25,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305034074] [2025-01-08 22:44:25,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:44:25,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:44:25,226 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-08 22:44:25,244 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-08 22:44:25,244 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:44:25,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:25,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:44:25,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:44:25,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305034074] [2025-01-08 22:44:25,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305034074] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:44:25,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:44:25,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-08 22:44:25,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541474511] [2025-01-08 22:44:25,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:44:25,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-08 22:44:25,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:44:25,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-08 22:44:25,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-08 22:44:25,323 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 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) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2025-01-08 22:44:25,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:44:25,333 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2025-01-08 22:44:25,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-08 22:44:25,335 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) Word has length 10 [2025-01-08 22:44:25,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:44:25,341 INFO L225 Difference]: With dead ends: 34 [2025-01-08 22:44:25,342 INFO L226 Difference]: Without dead ends: 15 [2025-01-08 22:44:25,344 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-08 22:44:25,347 INFO L435 NwaCegarLoop]: 24 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, 24 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 [2025-01-08 22:44:25,348 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:44:25,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2025-01-08 22:44:25,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2025-01-08 22:44:25,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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) [2025-01-08 22:44:25,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2025-01-08 22:44:25,375 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 10 [2025-01-08 22:44:25,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:44:25,375 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2025-01-08 22:44:25,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2025-01-08 22:44:25,375 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2025-01-08 22:44:25,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-08 22:44:25,375 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:44:25,375 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:44:25,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-08 22:44:25,376 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:44:25,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:44:25,376 INFO L85 PathProgramCache]: Analyzing trace with hash 678294461, now seen corresponding path program 1 times [2025-01-08 22:44:25,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:44:25,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786436501] [2025-01-08 22:44:25,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:44:25,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:44:25,392 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-08 22:44:25,405 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-08 22:44:25,408 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:44:25,408 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:25,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:44:25,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:44:25,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786436501] [2025-01-08 22:44:25,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786436501] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:44:25,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:44:25,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-08 22:44:25,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564600351] [2025-01-08 22:44:25,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:44:25,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-08 22:44:25,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:44:25,541 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-08 22:44:25,541 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-08 22:44:25,541 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2025-01-08 22:44:25,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:44:25,597 INFO L93 Difference]: Finished difference Result 31 states and 43 transitions. [2025-01-08 22:44:25,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-08 22:44:25,598 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) Word has length 10 [2025-01-08 22:44:25,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:44:25,599 INFO L225 Difference]: With dead ends: 31 [2025-01-08 22:44:25,599 INFO L226 Difference]: Without dead ends: 22 [2025-01-08 22:44:25,599 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-08 22:44:25,600 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 29 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:44:25,600 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 9 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:44:25,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-01-08 22:44:25,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2025-01-08 22:44:25,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 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) [2025-01-08 22:44:25,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2025-01-08 22:44:25,608 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2025-01-08 22:44:25,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:44:25,608 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2025-01-08 22:44:25,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2025-01-08 22:44:25,608 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2025-01-08 22:44:25,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-01-08 22:44:25,609 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:44:25,609 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:44:25,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-08 22:44:25,609 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:44:25,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:44:25,609 INFO L85 PathProgramCache]: Analyzing trace with hash -65471340, now seen corresponding path program 1 times [2025-01-08 22:44:25,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:44:25,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235654811] [2025-01-08 22:44:25,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:44:25,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:44:25,630 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-08 22:44:25,644 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-08 22:44:25,645 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:44:25,645 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:26,121 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:44:26,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:44:26,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235654811] [2025-01-08 22:44:26,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235654811] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:44:26,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354669855] [2025-01-08 22:44:26,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:44:26,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:44:26,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:44:26,124 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) [2025-01-08 22:44:26,126 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 [2025-01-08 22:44:26,171 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-08 22:44:26,199 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-08 22:44:26,199 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:44:26,199 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:26,201 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-08 22:44:26,206 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:44:26,245 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 11 treesize of output 7 [2025-01-08 22:44:26,348 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 19 treesize of output 11 [2025-01-08 22:44:26,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:44:26,404 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:44:26,527 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:44:26,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354669855] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:44:26,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:44:26,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 18 [2025-01-08 22:44:26,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644419352] [2025-01-08 22:44:26,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:44:26,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-08 22:44:26,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:44:26,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-08 22:44:26,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2025-01-08 22:44:26,529 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 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) [2025-01-08 22:44:26,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:44:26,747 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2025-01-08 22:44:26,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-08 22:44:26,748 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 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) Word has length 17 [2025-01-08 22:44:26,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:44:26,748 INFO L225 Difference]: With dead ends: 38 [2025-01-08 22:44:26,748 INFO L226 Difference]: Without dead ends: 35 [2025-01-08 22:44:26,749 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2025-01-08 22:44:26,750 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 45 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:44:26,750 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 28 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:44:26,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2025-01-08 22:44:26,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2025-01-08 22:44:26,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 27 states have internal predecessors, (37), 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) [2025-01-08 22:44:26,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2025-01-08 22:44:26,754 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 17 [2025-01-08 22:44:26,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:44:26,754 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2025-01-08 22:44:26,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 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) [2025-01-08 22:44:26,754 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2025-01-08 22:44:26,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-01-08 22:44:26,754 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:44:26,754 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:44:26,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-08 22:44:26,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:44:26,959 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:44:26,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:44:26,960 INFO L85 PathProgramCache]: Analyzing trace with hash -63624298, now seen corresponding path program 1 times [2025-01-08 22:44:26,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:44:26,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114413620] [2025-01-08 22:44:26,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:44:26,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:44:26,968 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-08 22:44:26,980 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-08 22:44:26,981 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:44:26,981 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:27,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:44:27,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:44:27,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114413620] [2025-01-08 22:44:27,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114413620] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:44:27,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085953009] [2025-01-08 22:44:27,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:44:27,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:44:27,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:44:27,187 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) [2025-01-08 22:44:27,189 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 [2025-01-08 22:44:27,221 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-08 22:44:27,233 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-08 22:44:27,233 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:44:27,233 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:27,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-01-08 22:44:27,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:44:27,265 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 19 treesize of output 11 [2025-01-08 22:44:27,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:44:27,289 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:44:27,342 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 27 treesize of output 23 [2025-01-08 22:44:27,352 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2025-01-08 22:44:27,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 16 [2025-01-08 22:44:27,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:44:27,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085953009] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:44:27,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:44:27,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 14 [2025-01-08 22:44:27,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479743459] [2025-01-08 22:44:27,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:44:27,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-08 22:44:27,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:44:27,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-08 22:44:27,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2025-01-08 22:44:27,363 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 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) [2025-01-08 22:44:27,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:44:27,493 INFO L93 Difference]: Finished difference Result 75 states and 102 transitions. [2025-01-08 22:44:27,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-08 22:44:27,493 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 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) Word has length 17 [2025-01-08 22:44:27,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:44:27,494 INFO L225 Difference]: With dead ends: 75 [2025-01-08 22:44:27,494 INFO L226 Difference]: Without dead ends: 64 [2025-01-08 22:44:27,495 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2025-01-08 22:44:27,495 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 68 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:44:27,495 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 53 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:44:27,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2025-01-08 22:44:27,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 38. [2025-01-08 22:44:27,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 37 states have internal predecessors, (51), 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) [2025-01-08 22:44:27,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 51 transitions. [2025-01-08 22:44:27,501 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 51 transitions. Word has length 17 [2025-01-08 22:44:27,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:44:27,501 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 51 transitions. [2025-01-08 22:44:27,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 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) [2025-01-08 22:44:27,502 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 51 transitions. [2025-01-08 22:44:27,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-01-08 22:44:27,502 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:44:27,502 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:44:27,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-08 22:44:27,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:44:27,703 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:44:27,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:44:27,703 INFO L85 PathProgramCache]: Analyzing trace with hash 616434072, now seen corresponding path program 1 times [2025-01-08 22:44:27,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:44:27,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778305789] [2025-01-08 22:44:27,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:44:27,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:44:27,709 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-08 22:44:27,720 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-08 22:44:27,721 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:44:27,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:27,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:44:27,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:44:27,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778305789] [2025-01-08 22:44:27,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778305789] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:44:27,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688997673] [2025-01-08 22:44:27,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:44:27,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:44:27,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:44:27,872 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) [2025-01-08 22:44:27,875 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 [2025-01-08 22:44:27,907 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-08 22:44:27,920 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-08 22:44:27,921 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:44:27,921 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:27,922 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-08 22:44:27,923 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:44:27,934 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 11 treesize of output 7 [2025-01-08 22:44:27,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:44:27,948 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:44:27,970 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 14 treesize of output 12 [2025-01-08 22:44:27,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2025-01-08 22:44:27,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:44:27,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688997673] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:44:27,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:44:27,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2025-01-08 22:44:27,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941325021] [2025-01-08 22:44:27,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:44:27,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-08 22:44:27,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:44:27,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-08 22:44:27,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-01-08 22:44:27,980 INFO L87 Difference]: Start difference. First operand 38 states and 51 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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) [2025-01-08 22:44:28,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:44:28,045 INFO L93 Difference]: Finished difference Result 66 states and 90 transitions. [2025-01-08 22:44:28,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-08 22:44:28,046 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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) Word has length 17 [2025-01-08 22:44:28,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:44:28,047 INFO L225 Difference]: With dead ends: 66 [2025-01-08 22:44:28,047 INFO L226 Difference]: Without dead ends: 48 [2025-01-08 22:44:28,047 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2025-01-08 22:44:28,047 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:44:28,047 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 51 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:44:28,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2025-01-08 22:44:28,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 40. [2025-01-08 22:44:28,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.358974358974359) internal successors, (53), 39 states have internal predecessors, (53), 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) [2025-01-08 22:44:28,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 53 transitions. [2025-01-08 22:44:28,056 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 53 transitions. Word has length 17 [2025-01-08 22:44:28,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:44:28,056 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 53 transitions. [2025-01-08 22:44:28,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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) [2025-01-08 22:44:28,056 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 53 transitions. [2025-01-08 22:44:28,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-01-08 22:44:28,056 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:44:28,057 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:44:28,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-08 22:44:28,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:44:28,257 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:44:28,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:44:28,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1299140122, now seen corresponding path program 2 times [2025-01-08 22:44:28,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:44:28,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867407564] [2025-01-08 22:44:28,258 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:44:28,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:44:28,266 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-01-08 22:44:28,274 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-08 22:44:28,275 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:44:28,275 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:28,340 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:44:28,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:44:28,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867407564] [2025-01-08 22:44:28,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867407564] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:44:28,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119243267] [2025-01-08 22:44:28,341 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:44:28,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:44:28,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:44:28,343 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) [2025-01-08 22:44:28,346 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 [2025-01-08 22:44:28,381 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-01-08 22:44:28,395 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-08 22:44:28,395 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:44:28,395 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:28,396 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-08 22:44:28,397 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:44:28,436 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:44:28,436 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:44:28,472 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:44:28,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119243267] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:44:28,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:44:28,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-01-08 22:44:28,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762319131] [2025-01-08 22:44:28,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:44:28,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-08 22:44:28,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:44:28,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-08 22:44:28,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2025-01-08 22:44:28,473 INFO L87 Difference]: Start difference. First operand 40 states and 53 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 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) [2025-01-08 22:44:28,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:44:28,626 INFO L93 Difference]: Finished difference Result 73 states and 96 transitions. [2025-01-08 22:44:28,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-08 22:44:28,626 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 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) Word has length 18 [2025-01-08 22:44:28,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:44:28,626 INFO L225 Difference]: With dead ends: 73 [2025-01-08 22:44:28,627 INFO L226 Difference]: Without dead ends: 65 [2025-01-08 22:44:28,627 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2025-01-08 22:44:28,627 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 49 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:44:28,627 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 25 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:44:28,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2025-01-08 22:44:28,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 45. [2025-01-08 22:44:28,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.3636363636363635) internal successors, (60), 44 states have internal predecessors, (60), 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) [2025-01-08 22:44:28,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2025-01-08 22:44:28,634 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 18 [2025-01-08 22:44:28,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:44:28,634 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2025-01-08 22:44:28,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 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) [2025-01-08 22:44:28,634 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2025-01-08 22:44:28,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-01-08 22:44:28,635 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:44:28,635 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:44:28,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-08 22:44:28,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-01-08 22:44:28,839 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:44:28,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:44:28,840 INFO L85 PathProgramCache]: Analyzing trace with hash -807674365, now seen corresponding path program 3 times [2025-01-08 22:44:28,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:44:28,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275170663] [2025-01-08 22:44:28,840 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:44:28,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:44:28,846 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-01-08 22:44:28,857 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-01-08 22:44:28,857 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-08 22:44:28,857 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:28,916 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:44:28,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:44:28,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275170663] [2025-01-08 22:44:28,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275170663] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:44:28,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590274204] [2025-01-08 22:44:28,917 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:44:28,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:44:28,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:44:28,919 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) [2025-01-08 22:44:28,920 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 [2025-01-08 22:44:28,954 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-01-08 22:44:28,970 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-01-08 22:44:28,970 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-08 22:44:28,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:28,971 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-08 22:44:28,972 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:44:29,010 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:44:29,010 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:44:29,040 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:44:29,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590274204] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:44:29,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:44:29,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-01-08 22:44:29,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3307831] [2025-01-08 22:44:29,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:44:29,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-08 22:44:29,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:44:29,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-08 22:44:29,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2025-01-08 22:44:29,041 INFO L87 Difference]: Start difference. First operand 45 states and 60 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 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) [2025-01-08 22:44:29,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:44:29,127 INFO L93 Difference]: Finished difference Result 66 states and 85 transitions. [2025-01-08 22:44:29,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-08 22:44:29,127 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 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) Word has length 20 [2025-01-08 22:44:29,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:44:29,128 INFO L225 Difference]: With dead ends: 66 [2025-01-08 22:44:29,128 INFO L226 Difference]: Without dead ends: 35 [2025-01-08 22:44:29,128 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2025-01-08 22:44:29,128 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 23 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:44:29,128 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 28 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:44:29,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2025-01-08 22:44:29,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2025-01-08 22:44:29,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 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) [2025-01-08 22:44:29,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2025-01-08 22:44:29,135 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 20 [2025-01-08 22:44:29,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:44:29,135 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2025-01-08 22:44:29,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 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) [2025-01-08 22:44:29,135 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2025-01-08 22:44:29,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-01-08 22:44:29,136 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:44:29,136 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:44:29,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-08 22:44:29,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:44:29,336 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:44:29,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:44:29,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1252954589, now seen corresponding path program 4 times [2025-01-08 22:44:29,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:44:29,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581446092] [2025-01-08 22:44:29,337 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:44:29,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:44:29,344 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 24 statements into 2 equivalence classes. [2025-01-08 22:44:29,357 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-01-08 22:44:29,357 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:44:29,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:29,687 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-08 22:44:29,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:44:29,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581446092] [2025-01-08 22:44:29,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581446092] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:44:29,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876269806] [2025-01-08 22:44:29,688 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:44:29,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:44:29,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:44:29,699 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) [2025-01-08 22:44:29,700 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 [2025-01-08 22:44:29,737 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 24 statements into 2 equivalence classes. [2025-01-08 22:44:29,753 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-01-08 22:44:29,753 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:44:29,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:29,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-01-08 22:44:29,756 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:44:29,761 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 11 treesize of output 7 [2025-01-08 22:44:29,920 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 19 treesize of output 11 [2025-01-08 22:44:29,989 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 19 treesize of output 11 [2025-01-08 22:44:30,024 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:44:30,024 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:44:30,316 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:44:30,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876269806] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:44:30,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:44:30,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2025-01-08 22:44:30,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524973278] [2025-01-08 22:44:30,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:44:30,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-01-08 22:44:30,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:44:30,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-01-08 22:44:30,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=919, Unknown=0, NotChecked=0, Total=1056 [2025-01-08 22:44:30,317 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 33 states, 33 states have (on average 1.7272727272727273) internal successors, (57), 33 states have internal predecessors, (57), 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) [2025-01-08 22:44:30,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:44:30,930 INFO L93 Difference]: Finished difference Result 87 states and 118 transitions. [2025-01-08 22:44:30,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-01-08 22:44:30,930 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.7272727272727273) internal successors, (57), 33 states have internal predecessors, (57), 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) Word has length 24 [2025-01-08 22:44:30,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:44:30,932 INFO L225 Difference]: With dead ends: 87 [2025-01-08 22:44:30,932 INFO L226 Difference]: Without dead ends: 80 [2025-01-08 22:44:30,933 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 633 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=340, Invalid=1916, Unknown=0, NotChecked=0, Total=2256 [2025-01-08 22:44:30,933 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 56 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-08 22:44:30,933 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 76 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-08 22:44:30,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2025-01-08 22:44:30,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2025-01-08 22:44:30,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.3389830508474576) internal successors, (79), 59 states have internal predecessors, (79), 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) [2025-01-08 22:44:30,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 79 transitions. [2025-01-08 22:44:30,949 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 79 transitions. Word has length 24 [2025-01-08 22:44:30,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:44:30,949 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 79 transitions. [2025-01-08 22:44:30,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.7272727272727273) internal successors, (57), 33 states have internal predecessors, (57), 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) [2025-01-08 22:44:30,949 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 79 transitions. [2025-01-08 22:44:30,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-01-08 22:44:30,950 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:44:30,950 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:44:30,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-08 22:44:31,150 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,SelfDestructingSolverStorable7 [2025-01-08 22:44:31,151 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:44:31,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:44:31,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1254801631, now seen corresponding path program 1 times [2025-01-08 22:44:31,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:44:31,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894702308] [2025-01-08 22:44:31,152 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:44:31,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:44:31,158 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-08 22:44:31,180 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-08 22:44:31,180 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:44:31,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:31,370 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-08 22:44:31,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:44:31,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894702308] [2025-01-08 22:44:31,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894702308] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:44:31,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577054380] [2025-01-08 22:44:31,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:44:31,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:44:31,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:44:31,372 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) [2025-01-08 22:44:31,374 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 [2025-01-08 22:44:31,414 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-08 22:44:31,429 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-08 22:44:31,430 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:44:31,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:31,431 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-01-08 22:44:31,432 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:44:31,471 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 19 treesize of output 11 [2025-01-08 22:44:31,514 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-08 22:44:31,514 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:44:31,566 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 29 treesize of output 25 [2025-01-08 22:44:31,570 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2025-01-08 22:44:31,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2025-01-08 22:44:31,588 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-08 22:44:31,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577054380] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:44:31,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:44:31,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 18 [2025-01-08 22:44:31,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473174763] [2025-01-08 22:44:31,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:44:31,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-08 22:44:31,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:44:31,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-08 22:44:31,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2025-01-08 22:44:31,589 INFO L87 Difference]: Start difference. First operand 60 states and 79 transitions. Second operand has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 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) [2025-01-08 22:44:31,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:44:31,758 INFO L93 Difference]: Finished difference Result 95 states and 124 transitions. [2025-01-08 22:44:31,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-08 22:44:31,758 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 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) Word has length 24 [2025-01-08 22:44:31,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:44:31,759 INFO L225 Difference]: With dead ends: 95 [2025-01-08 22:44:31,759 INFO L226 Difference]: Without dead ends: 89 [2025-01-08 22:44:31,759 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2025-01-08 22:44:31,760 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 64 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:44:31,760 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 83 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:44:31,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2025-01-08 22:44:31,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 66. [2025-01-08 22:44:31,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.3076923076923077) internal successors, (85), 65 states have internal predecessors, (85), 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) [2025-01-08 22:44:31,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 85 transitions. [2025-01-08 22:44:31,776 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 85 transitions. Word has length 24 [2025-01-08 22:44:31,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:44:31,776 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 85 transitions. [2025-01-08 22:44:31,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 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) [2025-01-08 22:44:31,776 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 85 transitions. [2025-01-08 22:44:31,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-01-08 22:44:31,776 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:44:31,776 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:44:31,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-01-08 22:44:31,977 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 [2025-01-08 22:44:31,977 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:44:31,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:44:31,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1512967069, now seen corresponding path program 1 times [2025-01-08 22:44:31,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:44:31,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174344081] [2025-01-08 22:44:31,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:44:31,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:44:31,988 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-08 22:44:32,000 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-08 22:44:32,000 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:44:32,000 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:32,167 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:44:32,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:44:32,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174344081] [2025-01-08 22:44:32,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174344081] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:44:32,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543188943] [2025-01-08 22:44:32,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:44:32,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:44:32,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:44:32,170 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) [2025-01-08 22:44:32,171 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 [2025-01-08 22:44:32,215 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-08 22:44:32,229 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-08 22:44:32,229 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:44:32,229 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:32,230 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-01-08 22:44:32,231 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:44:32,249 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 11 treesize of output 7 [2025-01-08 22:44:32,266 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:44:32,267 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 1 case distinctions, treesize of input 25 treesize of output 20 [2025-01-08 22:44:32,280 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:44:32,280 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:44:32,311 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 16 treesize of output 14 [2025-01-08 22:44:32,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2025-01-08 22:44:32,330 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:44:32,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543188943] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:44:32,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:44:32,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2025-01-08 22:44:32,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920971405] [2025-01-08 22:44:32,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:44:32,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-08 22:44:32,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:44:32,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-08 22:44:32,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2025-01-08 22:44:32,332 INFO L87 Difference]: Start difference. First operand 66 states and 85 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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) [2025-01-08 22:44:32,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:44:32,424 INFO L93 Difference]: Finished difference Result 103 states and 135 transitions. [2025-01-08 22:44:32,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-08 22:44:32,424 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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) Word has length 24 [2025-01-08 22:44:32,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:44:32,425 INFO L225 Difference]: With dead ends: 103 [2025-01-08 22:44:32,425 INFO L226 Difference]: Without dead ends: 73 [2025-01-08 22:44:32,425 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2025-01-08 22:44:32,425 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:44:32,426 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 57 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:44:32,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2025-01-08 22:44:32,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 65. [2025-01-08 22:44:32,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.28125) internal successors, (82), 64 states have internal predecessors, (82), 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) [2025-01-08 22:44:32,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 82 transitions. [2025-01-08 22:44:32,437 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 82 transitions. Word has length 24 [2025-01-08 22:44:32,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:44:32,437 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 82 transitions. [2025-01-08 22:44:32,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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) [2025-01-08 22:44:32,437 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 82 transitions. [2025-01-08 22:44:32,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-01-08 22:44:32,438 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:44:32,438 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:44:32,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-08 22:44:32,638 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 [2025-01-08 22:44:32,639 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:44:32,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:44:32,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1056745446, now seen corresponding path program 5 times [2025-01-08 22:44:32,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:44:32,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485997010] [2025-01-08 22:44:32,639 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:44:32,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:44:32,650 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 27 statements into 4 equivalence classes. [2025-01-08 22:44:32,663 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 27 of 27 statements. [2025-01-08 22:44:32,663 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-01-08 22:44:32,663 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:32,724 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:44:32,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:44:32,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485997010] [2025-01-08 22:44:32,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485997010] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:44:32,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964454275] [2025-01-08 22:44:32,724 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:44:32,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:44:32,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:44:32,727 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) [2025-01-08 22:44:32,728 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 [2025-01-08 22:44:32,771 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 27 statements into 4 equivalence classes. [2025-01-08 22:44:32,791 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 27 of 27 statements. [2025-01-08 22:44:32,791 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-01-08 22:44:32,791 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:32,792 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-08 22:44:32,793 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:44:32,847 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:44:32,847 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:44:32,886 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:44:32,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964454275] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:44:32,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:44:32,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2025-01-08 22:44:32,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621945370] [2025-01-08 22:44:32,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:44:32,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-08 22:44:32,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:44:32,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-08 22:44:32,887 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2025-01-08 22:44:32,888 INFO L87 Difference]: Start difference. First operand 65 states and 82 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 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) [2025-01-08 22:44:33,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:44:33,000 INFO L93 Difference]: Finished difference Result 93 states and 115 transitions. [2025-01-08 22:44:33,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-08 22:44:33,001 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 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) Word has length 27 [2025-01-08 22:44:33,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:44:33,001 INFO L225 Difference]: With dead ends: 93 [2025-01-08 22:44:33,001 INFO L226 Difference]: Without dead ends: 48 [2025-01-08 22:44:33,001 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2025-01-08 22:44:33,002 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 57 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:44:33,002 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 22 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:44:33,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2025-01-08 22:44:33,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 37. [2025-01-08 22:44:33,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 36 states have internal predecessors, (44), 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) [2025-01-08 22:44:33,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2025-01-08 22:44:33,009 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 27 [2025-01-08 22:44:33,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:44:33,009 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2025-01-08 22:44:33,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 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) [2025-01-08 22:44:33,009 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2025-01-08 22:44:33,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-01-08 22:44:33,010 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:44:33,010 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:44:33,016 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-08 22:44:33,211 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 [2025-01-08 22:44:33,212 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:44:33,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:44:33,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1067440957, now seen corresponding path program 6 times [2025-01-08 22:44:33,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:44:33,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303778083] [2025-01-08 22:44:33,213 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:44:33,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:44:33,220 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 28 statements into 4 equivalence classes. [2025-01-08 22:44:33,237 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 28 of 28 statements. [2025-01-08 22:44:33,237 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-01-08 22:44:33,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:33,308 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:44:33,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:44:33,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303778083] [2025-01-08 22:44:33,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303778083] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:44:33,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352775205] [2025-01-08 22:44:33,309 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:44:33,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:44:33,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:44:33,311 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) [2025-01-08 22:44:33,312 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 [2025-01-08 22:44:33,355 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 28 statements into 4 equivalence classes. [2025-01-08 22:44:33,376 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 28 of 28 statements. [2025-01-08 22:44:33,376 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-01-08 22:44:33,376 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:33,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-08 22:44:33,379 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:44:33,437 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:44:33,437 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:44:33,494 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:44:33,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352775205] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:44:33,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:44:33,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2025-01-08 22:44:33,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519682384] [2025-01-08 22:44:33,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:44:33,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-08 22:44:33,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:44:33,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-08 22:44:33,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2025-01-08 22:44:33,495 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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) [2025-01-08 22:44:33,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:44:33,598 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2025-01-08 22:44:33,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-08 22:44:33,598 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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) Word has length 28 [2025-01-08 22:44:33,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:44:33,599 INFO L225 Difference]: With dead ends: 48 [2025-01-08 22:44:33,599 INFO L226 Difference]: Without dead ends: 45 [2025-01-08 22:44:33,599 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2025-01-08 22:44:33,600 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 81 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:44:33,600 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 21 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:44:33,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2025-01-08 22:44:33,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 40. [2025-01-08 22:44:33,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 39 states have internal predecessors, (48), 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) [2025-01-08 22:44:33,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2025-01-08 22:44:33,604 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 28 [2025-01-08 22:44:33,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:44:33,604 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2025-01-08 22:44:33,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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) [2025-01-08 22:44:33,604 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2025-01-08 22:44:33,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-01-08 22:44:33,604 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:44:33,605 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:44:33,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-01-08 22:44:33,809 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 [2025-01-08 22:44:33,809 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:44:33,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:44:33,809 INFO L85 PathProgramCache]: Analyzing trace with hash -461827212, now seen corresponding path program 7 times [2025-01-08 22:44:33,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:44:33,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458532749] [2025-01-08 22:44:33,809 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:44:33,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:44:33,818 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-01-08 22:44:33,827 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-01-08 22:44:33,827 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:44:33,827 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:34,256 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:44:34,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:44:34,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458532749] [2025-01-08 22:44:34,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458532749] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:44:34,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357927173] [2025-01-08 22:44:34,256 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:44:34,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:44:34,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:44:34,259 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) [2025-01-08 22:44:34,261 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 [2025-01-08 22:44:34,304 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-01-08 22:44:34,323 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-01-08 22:44:34,323 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:44:34,323 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:34,324 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-01-08 22:44:34,328 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:44:34,331 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 11 treesize of output 7 [2025-01-08 22:44:34,397 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 19 treesize of output 11 [2025-01-08 22:44:34,460 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 19 treesize of output 11 [2025-01-08 22:44:34,555 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 19 treesize of output 11 [2025-01-08 22:44:34,598 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:44:34,599 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:44:34,930 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:44:34,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357927173] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:44:34,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:44:34,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 14] total 33 [2025-01-08 22:44:34,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747349446] [2025-01-08 22:44:34,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:44:34,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-01-08 22:44:34,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:44:34,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-01-08 22:44:34,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=951, Unknown=0, NotChecked=0, Total=1056 [2025-01-08 22:44:34,932 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand has 33 states, 33 states have (on average 1.606060606060606) internal successors, (53), 33 states have internal predecessors, (53), 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) [2025-01-08 22:44:35,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:44:35,948 INFO L93 Difference]: Finished difference Result 108 states and 141 transitions. [2025-01-08 22:44:35,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-01-08 22:44:35,948 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.606060606060606) internal successors, (53), 33 states have internal predecessors, (53), 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) Word has length 31 [2025-01-08 22:44:35,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:44:35,949 INFO L225 Difference]: With dead ends: 108 [2025-01-08 22:44:35,949 INFO L226 Difference]: Without dead ends: 101 [2025-01-08 22:44:35,950 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 746 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=376, Invalid=3046, Unknown=0, NotChecked=0, Total=3422 [2025-01-08 22:44:35,950 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 35 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-08 22:44:35,951 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 85 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-08 22:44:35,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2025-01-08 22:44:35,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 86. [2025-01-08 22:44:35,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.2941176470588236) internal successors, (110), 85 states have internal predecessors, (110), 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) [2025-01-08 22:44:35,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 110 transitions. [2025-01-08 22:44:35,959 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 110 transitions. Word has length 31 [2025-01-08 22:44:35,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:44:35,960 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 110 transitions. [2025-01-08 22:44:35,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.606060606060606) internal successors, (53), 33 states have internal predecessors, (53), 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) [2025-01-08 22:44:35,960 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 110 transitions. [2025-01-08 22:44:35,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-01-08 22:44:35,960 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:44:35,961 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:44:35,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-01-08 22:44:36,165 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,SelfDestructingSolverStorable12 [2025-01-08 22:44:36,165 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:44:36,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:44:36,165 INFO L85 PathProgramCache]: Analyzing trace with hash -459980170, now seen corresponding path program 2 times [2025-01-08 22:44:36,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:44:36,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696923187] [2025-01-08 22:44:36,165 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:44:36,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:44:36,171 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-01-08 22:44:36,191 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-01-08 22:44:36,191 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:44:36,191 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:36,394 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-08 22:44:36,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:44:36,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696923187] [2025-01-08 22:44:36,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696923187] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:44:36,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037168390] [2025-01-08 22:44:36,395 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:44:36,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:44:36,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:44:36,397 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) [2025-01-08 22:44:36,398 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 [2025-01-08 22:44:36,449 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-01-08 22:44:36,468 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-01-08 22:44:36,468 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:44:36,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:36,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-01-08 22:44:36,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:44:36,521 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 19 treesize of output 11 [2025-01-08 22:44:36,559 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:44:36,559 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:44:36,629 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 29 treesize of output 25 [2025-01-08 22:44:36,632 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2025-01-08 22:44:36,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2025-01-08 22:44:36,662 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-08 22:44:36,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037168390] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:44:36,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:44:36,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 22 [2025-01-08 22:44:36,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508429836] [2025-01-08 22:44:36,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:44:36,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-01-08 22:44:36,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:44:36,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-01-08 22:44:36,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2025-01-08 22:44:36,663 INFO L87 Difference]: Start difference. First operand 86 states and 110 transitions. Second operand has 22 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 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) [2025-01-08 22:44:36,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:44:36,886 INFO L93 Difference]: Finished difference Result 125 states and 161 transitions. [2025-01-08 22:44:36,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-08 22:44:36,887 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 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) Word has length 31 [2025-01-08 22:44:36,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:44:36,887 INFO L225 Difference]: With dead ends: 125 [2025-01-08 22:44:36,887 INFO L226 Difference]: Without dead ends: 119 [2025-01-08 22:44:36,888 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2025-01-08 22:44:36,888 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 47 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:44:36,888 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 110 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:44:36,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2025-01-08 22:44:36,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 92. [2025-01-08 22:44:36,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.2747252747252746) internal successors, (116), 91 states have internal predecessors, (116), 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) [2025-01-08 22:44:36,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 116 transitions. [2025-01-08 22:44:36,897 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 116 transitions. Word has length 31 [2025-01-08 22:44:36,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:44:36,897 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 116 transitions. [2025-01-08 22:44:36,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 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) [2025-01-08 22:44:36,897 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 116 transitions. [2025-01-08 22:44:36,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-01-08 22:44:36,898 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:44:36,898 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:44:36,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-01-08 22:44:37,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:44:37,098 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:44:37,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:44:37,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1739843848, now seen corresponding path program 2 times [2025-01-08 22:44:37,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:44:37,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181567644] [2025-01-08 22:44:37,099 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:44:37,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:44:37,105 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-01-08 22:44:37,118 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-01-08 22:44:37,119 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:44:37,119 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:37,281 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:44:37,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:44:37,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181567644] [2025-01-08 22:44:37,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181567644] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:44:37,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285826379] [2025-01-08 22:44:37,282 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:44:37,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:44:37,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:44:37,284 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) [2025-01-08 22:44:37,286 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 [2025-01-08 22:44:37,336 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-01-08 22:44:37,356 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-01-08 22:44:37,357 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:44:37,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:37,358 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-01-08 22:44:37,359 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:44:37,395 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 11 treesize of output 7 [2025-01-08 22:44:37,440 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:44:37,440 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 1 case distinctions, treesize of input 25 treesize of output 20 [2025-01-08 22:44:37,470 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:44:37,470 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 1 case distinctions, treesize of input 25 treesize of output 20 [2025-01-08 22:44:37,492 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:44:37,493 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:44:37,520 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 16 treesize of output 14 [2025-01-08 22:44:37,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2025-01-08 22:44:37,527 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:44:37,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285826379] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:44:37,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:44:37,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2025-01-08 22:44:37,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573822342] [2025-01-08 22:44:37,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:44:37,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-08 22:44:37,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:44:37,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-08 22:44:37,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2025-01-08 22:44:37,529 INFO L87 Difference]: Start difference. First operand 92 states and 116 transitions. Second operand has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 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) [2025-01-08 22:44:37,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:44:37,650 INFO L93 Difference]: Finished difference Result 149 states and 195 transitions. [2025-01-08 22:44:37,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-08 22:44:37,652 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 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) Word has length 31 [2025-01-08 22:44:37,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:44:37,652 INFO L225 Difference]: With dead ends: 149 [2025-01-08 22:44:37,652 INFO L226 Difference]: Without dead ends: 103 [2025-01-08 22:44:37,652 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2025-01-08 22:44:37,653 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 13 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:44:37,653 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 57 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:44:37,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2025-01-08 22:44:37,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 94. [2025-01-08 22:44:37,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.2688172043010753) internal successors, (118), 93 states have internal predecessors, (118), 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) [2025-01-08 22:44:37,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 118 transitions. [2025-01-08 22:44:37,667 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 118 transitions. Word has length 31 [2025-01-08 22:44:37,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:44:37,668 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 118 transitions. [2025-01-08 22:44:37,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 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) [2025-01-08 22:44:37,668 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 118 transitions. [2025-01-08 22:44:37,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-01-08 22:44:37,669 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:44:37,669 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:44:37,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-01-08 22:44:37,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:44:37,873 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:44:37,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:44:37,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1664662918, now seen corresponding path program 8 times [2025-01-08 22:44:37,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:44:37,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078884534] [2025-01-08 22:44:37,874 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:44:37,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:44:37,889 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-01-08 22:44:37,897 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-01-08 22:44:37,897 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:44:37,897 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:37,980 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:44:37,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:44:37,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078884534] [2025-01-08 22:44:37,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078884534] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:44:37,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203180944] [2025-01-08 22:44:37,980 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:44:37,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:44:37,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:44:37,982 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) [2025-01-08 22:44:37,984 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 [2025-01-08 22:44:38,034 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-01-08 22:44:38,051 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-01-08 22:44:38,051 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:44:38,051 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:38,052 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-08 22:44:38,053 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:44:38,115 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:44:38,115 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:44:38,173 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:44:38,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203180944] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:44:38,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:44:38,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2025-01-08 22:44:38,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264291803] [2025-01-08 22:44:38,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:44:38,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-08 22:44:38,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:44:38,174 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-08 22:44:38,174 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2025-01-08 22:44:38,174 INFO L87 Difference]: Start difference. First operand 94 states and 118 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 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) [2025-01-08 22:44:38,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:44:38,434 INFO L93 Difference]: Finished difference Result 140 states and 174 transitions. [2025-01-08 22:44:38,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-08 22:44:38,435 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 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) Word has length 32 [2025-01-08 22:44:38,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:44:38,435 INFO L225 Difference]: With dead ends: 140 [2025-01-08 22:44:38,435 INFO L226 Difference]: Without dead ends: 124 [2025-01-08 22:44:38,436 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2025-01-08 22:44:38,436 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 82 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:44:38,436 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 25 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:44:38,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2025-01-08 22:44:38,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 86. [2025-01-08 22:44:38,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.2705882352941176) internal successors, (108), 85 states have internal predecessors, (108), 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) [2025-01-08 22:44:38,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 108 transitions. [2025-01-08 22:44:38,447 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 108 transitions. Word has length 32 [2025-01-08 22:44:38,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:44:38,447 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 108 transitions. [2025-01-08 22:44:38,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 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) [2025-01-08 22:44:38,448 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 108 transitions. [2025-01-08 22:44:38,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-01-08 22:44:38,448 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:44:38,448 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:44:38,455 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 [2025-01-08 22:44:38,649 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,SelfDestructingSolverStorable15 [2025-01-08 22:44:38,649 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:44:38,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:44:38,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1780360413, now seen corresponding path program 9 times [2025-01-08 22:44:38,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:44:38,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730081245] [2025-01-08 22:44:38,650 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:44:38,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:44:38,655 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 34 statements into 5 equivalence classes. [2025-01-08 22:44:38,671 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 34 of 34 statements. [2025-01-08 22:44:38,672 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-01-08 22:44:38,672 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:38,774 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:44:38,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:44:38,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730081245] [2025-01-08 22:44:38,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730081245] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:44:38,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380348414] [2025-01-08 22:44:38,775 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:44:38,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:44:38,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:44:38,777 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:44:38,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-08 22:44:38,827 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 34 statements into 5 equivalence classes. [2025-01-08 22:44:38,856 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 34 of 34 statements. [2025-01-08 22:44:38,857 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-01-08 22:44:38,857 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:38,858 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-08 22:44:38,860 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:44:38,930 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-08 22:44:38,930 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:44:38,985 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-08 22:44:38,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380348414] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:44:38,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:44:38,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 17 [2025-01-08 22:44:38,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143883996] [2025-01-08 22:44:38,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:44:38,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-08 22:44:38,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:44:38,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-08 22:44:38,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2025-01-08 22:44:38,987 INFO L87 Difference]: Start difference. First operand 86 states and 108 transitions. Second operand has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 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) [2025-01-08 22:44:39,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:44:39,105 INFO L93 Difference]: Finished difference Result 125 states and 153 transitions. [2025-01-08 22:44:39,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-08 22:44:39,106 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 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) Word has length 34 [2025-01-08 22:44:39,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:44:39,106 INFO L225 Difference]: With dead ends: 125 [2025-01-08 22:44:39,107 INFO L226 Difference]: Without dead ends: 55 [2025-01-08 22:44:39,107 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 56 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2025-01-08 22:44:39,108 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 47 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:44:39,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 30 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:44:39,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2025-01-08 22:44:39,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 50. [2025-01-08 22:44:39,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 49 states have internal predecessors, (59), 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) [2025-01-08 22:44:39,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2025-01-08 22:44:39,116 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 34 [2025-01-08 22:44:39,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:44:39,116 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2025-01-08 22:44:39,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 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) [2025-01-08 22:44:39,116 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2025-01-08 22:44:39,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-01-08 22:44:39,116 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:44:39,116 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:44:39,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-01-08 22:44:39,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-01-08 22:44:39,317 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:44:39,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:44:39,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1100613635, now seen corresponding path program 10 times [2025-01-08 22:44:39,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:44:39,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381410380] [2025-01-08 22:44:39,318 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:44:39,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:44:39,323 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 38 statements into 2 equivalence classes. [2025-01-08 22:44:39,337 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-01-08 22:44:39,338 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:44:39,338 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:39,884 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-08 22:44:39,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:44:39,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381410380] [2025-01-08 22:44:39,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381410380] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:44:39,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638534303] [2025-01-08 22:44:39,885 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:44:39,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:44:39,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:44:39,887 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:44:39,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-08 22:44:39,940 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 38 statements into 2 equivalence classes. [2025-01-08 22:44:39,971 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-01-08 22:44:39,972 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:44:39,972 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:39,973 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-01-08 22:44:39,975 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:44:39,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-08 22:44:40,256 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 19 treesize of output 11 [2025-01-08 22:44:40,338 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 19 treesize of output 11 [2025-01-08 22:44:40,440 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 19 treesize of output 11 [2025-01-08 22:44:40,570 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 19 treesize of output 11 [2025-01-08 22:44:40,637 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 12 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:44:40,637 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:44:41,417 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 22 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:44:41,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638534303] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:44:41,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:44:41,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 55 [2025-01-08 22:44:41,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290654133] [2025-01-08 22:44:41,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:44:41,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2025-01-08 22:44:41,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:44:41,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2025-01-08 22:44:41,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=2716, Unknown=0, NotChecked=0, Total=2970 [2025-01-08 22:44:41,420 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand has 55 states, 55 states have (on average 1.6181818181818182) internal successors, (89), 55 states have internal predecessors, (89), 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) [2025-01-08 22:44:43,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:44:43,746 INFO L93 Difference]: Finished difference Result 160 states and 207 transitions. [2025-01-08 22:44:43,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2025-01-08 22:44:43,747 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.6181818181818182) internal successors, (89), 55 states have internal predecessors, (89), 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) Word has length 38 [2025-01-08 22:44:43,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:44:43,748 INFO L225 Difference]: With dead ends: 160 [2025-01-08 22:44:43,748 INFO L226 Difference]: Without dead ends: 153 [2025-01-08 22:44:43,750 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2770 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=993, Invalid=9927, Unknown=0, NotChecked=0, Total=10920 [2025-01-08 22:44:43,750 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 96 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 2057 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 2224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 2057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:44:43,750 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 107 Invalid, 2224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 2057 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-01-08 22:44:43,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2025-01-08 22:44:43,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 116. [2025-01-08 22:44:43,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.2782608695652173) internal successors, (147), 115 states have internal predecessors, (147), 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) [2025-01-08 22:44:43,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 147 transitions. [2025-01-08 22:44:43,763 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 147 transitions. Word has length 38 [2025-01-08 22:44:43,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:44:43,763 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 147 transitions. [2025-01-08 22:44:43,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.6181818181818182) internal successors, (89), 55 states have internal predecessors, (89), 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) [2025-01-08 22:44:43,764 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 147 transitions. [2025-01-08 22:44:43,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-01-08 22:44:43,764 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:44:43,764 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:44:43,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-01-08 22:44:43,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-01-08 22:44:43,968 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:44:43,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:44:43,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1098766593, now seen corresponding path program 3 times [2025-01-08 22:44:43,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:44:43,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099758585] [2025-01-08 22:44:43,968 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:44:43,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:44:43,978 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 5 equivalence classes. [2025-01-08 22:44:43,985 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 26 of 38 statements. [2025-01-08 22:44:43,986 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-08 22:44:43,986 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:44,251 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 23 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-01-08 22:44:44,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:44:44,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099758585] [2025-01-08 22:44:44,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099758585] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:44:44,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695301958] [2025-01-08 22:44:44,252 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:44:44,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:44:44,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:44:44,253 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:44:44,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-01-08 22:44:44,308 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 5 equivalence classes. [2025-01-08 22:44:44,324 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 26 of 38 statements. [2025-01-08 22:44:44,324 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-08 22:44:44,324 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:44,325 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-01-08 22:44:44,326 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:44:44,345 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 27 treesize of output 15 [2025-01-08 22:44:44,421 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:44:44,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 17 [2025-01-08 22:44:44,455 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-01-08 22:44:44,456 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:44:44,565 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-01-08 22:44:44,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695301958] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:44:44,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:44:44,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 9] total 25 [2025-01-08 22:44:44,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567916436] [2025-01-08 22:44:44,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:44:44,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-01-08 22:44:44,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:44:44,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-01-08 22:44:44,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2025-01-08 22:44:44,566 INFO L87 Difference]: Start difference. First operand 116 states and 147 transitions. Second operand has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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) [2025-01-08 22:44:45,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:44:45,738 INFO L93 Difference]: Finished difference Result 296 states and 387 transitions. [2025-01-08 22:44:45,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2025-01-08 22:44:45,739 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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) Word has length 38 [2025-01-08 22:44:45,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:44:45,740 INFO L225 Difference]: With dead ends: 296 [2025-01-08 22:44:45,740 INFO L226 Difference]: Without dead ends: 236 [2025-01-08 22:44:45,741 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 71 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1260 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1114, Invalid=3856, Unknown=0, NotChecked=0, Total=4970 [2025-01-08 22:44:45,741 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 260 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-08 22:44:45,741 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 101 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-08 22:44:45,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2025-01-08 22:44:45,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 180. [2025-01-08 22:44:45,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.318435754189944) internal successors, (236), 179 states have internal predecessors, (236), 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) [2025-01-08 22:44:45,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 236 transitions. [2025-01-08 22:44:45,763 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 236 transitions. Word has length 38 [2025-01-08 22:44:45,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:44:45,763 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 236 transitions. [2025-01-08 22:44:45,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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) [2025-01-08 22:44:45,764 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 236 transitions. [2025-01-08 22:44:45,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-01-08 22:44:45,764 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:44:45,764 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:44:45,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-01-08 22:44:45,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:44:45,965 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:44:45,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:44:45,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1202055997, now seen corresponding path program 3 times [2025-01-08 22:44:45,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:44:45,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254589874] [2025-01-08 22:44:45,965 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:44:45,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:44:45,974 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 5 equivalence classes. [2025-01-08 22:44:45,983 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 38 of 38 statements. [2025-01-08 22:44:45,983 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-01-08 22:44:45,983 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:46,338 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-08 22:44:46,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:44:46,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254589874] [2025-01-08 22:44:46,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254589874] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:44:46,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864390513] [2025-01-08 22:44:46,338 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:44:46,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:44:46,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:44:46,341 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:44:46,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-01-08 22:44:46,395 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 5 equivalence classes. [2025-01-08 22:44:46,451 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 38 of 38 statements. [2025-01-08 22:44:46,452 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-01-08 22:44:46,452 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:46,453 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-01-08 22:44:46,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:44:46,468 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 13 treesize of output 9 [2025-01-08 22:44:46,537 INFO L349 Elim1Store]: treesize reduction 18, result has 57.1 percent of original size [2025-01-08 22:44:46,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 36 [2025-01-08 22:44:46,642 INFO L349 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2025-01-08 22:44:46,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 45 treesize of output 55 [2025-01-08 22:44:46,758 INFO L349 Elim1Store]: treesize reduction 64, result has 50.8 percent of original size [2025-01-08 22:44:46,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 66 treesize of output 105 [2025-01-08 22:44:47,146 INFO L349 Elim1Store]: treesize reduction 64, result has 50.8 percent of original size [2025-01-08 22:44:47,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 76 treesize of output 109 [2025-01-08 22:44:47,596 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-01-08 22:44:47,596 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:44:48,517 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 593 treesize of output 533 [2025-01-08 22:44:48,634 INFO L349 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2025-01-08 22:44:48,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 320795 treesize of output 1 [2025-01-08 22:44:48,637 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 14 proven. 32 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-08 22:44:48,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864390513] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:44:48,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:44:48,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18, 21] total 50 [2025-01-08 22:44:48,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880034375] [2025-01-08 22:44:48,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:44:48,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2025-01-08 22:44:48,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:44:48,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2025-01-08 22:44:48,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=2102, Unknown=0, NotChecked=0, Total=2450 [2025-01-08 22:44:48,641 INFO L87 Difference]: Start difference. First operand 180 states and 236 transitions. Second operand has 50 states, 50 states have (on average 1.62) internal successors, (81), 50 states have internal predecessors, (81), 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) [2025-01-08 22:45:03,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:45:03,414 INFO L93 Difference]: Finished difference Result 649 states and 858 transitions. [2025-01-08 22:45:03,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2025-01-08 22:45:03,415 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.62) internal successors, (81), 50 states have internal predecessors, (81), 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) Word has length 38 [2025-01-08 22:45:03,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:45:03,416 INFO L225 Difference]: With dead ends: 649 [2025-01-08 22:45:03,416 INFO L226 Difference]: Without dead ends: 530 [2025-01-08 22:45:03,422 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12580 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=4651, Invalid=31639, Unknown=0, NotChecked=0, Total=36290 [2025-01-08 22:45:03,422 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 597 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 1825 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 2164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 1825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-01-08 22:45:03,422 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 151 Invalid, 2164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 1825 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-01-08 22:45:03,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2025-01-08 22:45:03,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 228. [2025-01-08 22:45:03,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.3436123348017621) internal successors, (305), 227 states have internal predecessors, (305), 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) [2025-01-08 22:45:03,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 305 transitions. [2025-01-08 22:45:03,472 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 305 transitions. Word has length 38 [2025-01-08 22:45:03,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:45:03,472 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 305 transitions. [2025-01-08 22:45:03,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.62) internal successors, (81), 50 states have internal predecessors, (81), 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) [2025-01-08 22:45:03,472 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 305 transitions. [2025-01-08 22:45:03,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-01-08 22:45:03,473 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:45:03,473 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:45:03,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-01-08 22:45:03,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:45:03,673 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:45:03,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:45:03,674 INFO L85 PathProgramCache]: Analyzing trace with hash 2027681335, now seen corresponding path program 11 times [2025-01-08 22:45:03,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:45:03,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593861073] [2025-01-08 22:45:03,674 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:45:03,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:45:03,680 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 39 statements into 5 equivalence classes. [2025-01-08 22:45:03,686 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 39 of 39 statements. [2025-01-08 22:45:03,686 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-01-08 22:45:03,686 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:45:03,790 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 10 proven. 27 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-08 22:45:03,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:45:03,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593861073] [2025-01-08 22:45:03,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593861073] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:45:03,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652270149] [2025-01-08 22:45:03,790 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:45:03,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:45:03,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:45:03,792 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:45:03,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-01-08 22:45:03,851 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 39 statements into 5 equivalence classes. [2025-01-08 22:45:04,076 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 39 of 39 statements. [2025-01-08 22:45:04,076 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-01-08 22:45:04,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:45:04,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-08 22:45:04,079 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:45:04,144 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 10 proven. 27 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-08 22:45:04,144 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:45:04,208 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 10 proven. 27 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-08 22:45:04,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652270149] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:45:04,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:45:04,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 18 [2025-01-08 22:45:04,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384775567] [2025-01-08 22:45:04,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:45:04,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-08 22:45:04,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:45:04,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-08 22:45:04,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2025-01-08 22:45:04,209 INFO L87 Difference]: Start difference. First operand 228 states and 305 transitions. Second operand has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 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) [2025-01-08 22:45:04,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:45:04,486 INFO L93 Difference]: Finished difference Result 288 states and 376 transitions. [2025-01-08 22:45:04,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-08 22:45:04,486 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 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) Word has length 39 [2025-01-08 22:45:04,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:45:04,487 INFO L225 Difference]: With dead ends: 288 [2025-01-08 22:45:04,487 INFO L226 Difference]: Without dead ends: 264 [2025-01-08 22:45:04,487 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 62 SyntacticMatches, 11 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=209, Invalid=603, Unknown=0, NotChecked=0, Total=812 [2025-01-08 22:45:04,488 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 98 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:45:04,488 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 22 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:45:04,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2025-01-08 22:45:04,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 221. [2025-01-08 22:45:04,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.309090909090909) internal successors, (288), 220 states have internal predecessors, (288), 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) [2025-01-08 22:45:04,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 288 transitions. [2025-01-08 22:45:04,533 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 288 transitions. Word has length 39 [2025-01-08 22:45:04,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:45:04,533 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 288 transitions. [2025-01-08 22:45:04,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 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) [2025-01-08 22:45:04,534 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 288 transitions. [2025-01-08 22:45:04,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-01-08 22:45:04,534 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:45:04,534 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:45:04,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-01-08 22:45:04,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:45:04,735 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:45:04,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:45:04,735 INFO L85 PathProgramCache]: Analyzing trace with hash -866599430, now seen corresponding path program 12 times [2025-01-08 22:45:04,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:45:04,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999028354] [2025-01-08 22:45:04,735 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:45:04,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:45:04,745 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 41 statements into 6 equivalence classes. [2025-01-08 22:45:04,754 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 41 of 41 statements. [2025-01-08 22:45:04,755 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-01-08 22:45:04,755 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:45:04,861 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 25 proven. 20 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-08 22:45:04,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:45:04,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999028354] [2025-01-08 22:45:04,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999028354] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:45:04,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228206440] [2025-01-08 22:45:04,861 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:45:04,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:45:04,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:45:04,863 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:45:04,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-01-08 22:45:04,932 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 41 statements into 6 equivalence classes. [2025-01-08 22:45:04,971 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 41 of 41 statements. [2025-01-08 22:45:04,971 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-01-08 22:45:04,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:45:04,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-08 22:45:04,973 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:45:05,056 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 35 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-08 22:45:05,056 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:45:05,114 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 35 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-08 22:45:05,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228206440] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:45:05,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:45:05,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2025-01-08 22:45:05,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283093616] [2025-01-08 22:45:05,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:45:05,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-08 22:45:05,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:45:05,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-08 22:45:05,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2025-01-08 22:45:05,115 INFO L87 Difference]: Start difference. First operand 221 states and 288 transitions. Second operand has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 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) [2025-01-08 22:45:05,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:45:05,250 INFO L93 Difference]: Finished difference Result 257 states and 333 transitions. [2025-01-08 22:45:05,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-08 22:45:05,253 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 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) Word has length 41 [2025-01-08 22:45:05,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:45:05,253 INFO L225 Difference]: With dead ends: 257 [2025-01-08 22:45:05,253 INFO L226 Difference]: Without dead ends: 112 [2025-01-08 22:45:05,254 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 66 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2025-01-08 22:45:05,255 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 71 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:45:05,255 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 35 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:45:05,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2025-01-08 22:45:05,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 100. [2025-01-08 22:45:05,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.303030303030303) internal successors, (129), 99 states have internal predecessors, (129), 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) [2025-01-08 22:45:05,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 129 transitions. [2025-01-08 22:45:05,276 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 129 transitions. Word has length 41 [2025-01-08 22:45:05,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:45:05,276 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 129 transitions. [2025-01-08 22:45:05,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 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) [2025-01-08 22:45:05,277 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 129 transitions. [2025-01-08 22:45:05,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-01-08 22:45:05,277 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:45:05,277 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:45:05,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-01-08 22:45:05,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:45:05,478 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:45:05,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:45:05,478 INFO L85 PathProgramCache]: Analyzing trace with hash -2128616876, now seen corresponding path program 13 times [2025-01-08 22:45:05,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:45:05,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727263420] [2025-01-08 22:45:05,478 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:45:05,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:45:05,484 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-01-08 22:45:05,490 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-01-08 22:45:05,490 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:45:05,490 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:45:06,089 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-01-08 22:45:06,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:45:06,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727263420] [2025-01-08 22:45:06,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727263420] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:45:06,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288670556] [2025-01-08 22:45:06,089 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:45:06,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:45:06,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:45:06,091 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:45:06,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-01-08 22:45:06,150 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-01-08 22:45:06,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-01-08 22:45:06,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:45:06,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:45:06,168 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 65 conjuncts are in the unsatisfiable core [2025-01-08 22:45:06,170 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:45:06,173 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 11 treesize of output 7 [2025-01-08 22:45:06,244 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 19 treesize of output 11 [2025-01-08 22:45:06,306 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 19 treesize of output 11 [2025-01-08 22:45:06,380 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 19 treesize of output 11 [2025-01-08 22:45:06,466 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 19 treesize of output 11 [2025-01-08 22:45:06,576 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 19 treesize of output 11 [2025-01-08 22:45:06,619 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-01-08 22:45:06,619 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:45:07,216 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-01-08 22:45:07,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288670556] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:45:07,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:45:07,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 20, 20] total 51 [2025-01-08 22:45:07,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878914674] [2025-01-08 22:45:07,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:45:07,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2025-01-08 22:45:07,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:45:07,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2025-01-08 22:45:07,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=2381, Unknown=0, NotChecked=0, Total=2550 [2025-01-08 22:45:07,218 INFO L87 Difference]: Start difference. First operand 100 states and 129 transitions. Second operand has 51 states, 51 states have (on average 1.4705882352941178) internal successors, (75), 51 states have internal predecessors, (75), 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) [2025-01-08 22:45:09,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:45:09,848 INFO L93 Difference]: Finished difference Result 327 states and 442 transitions. [2025-01-08 22:45:09,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2025-01-08 22:45:09,848 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.4705882352941178) internal successors, (75), 51 states have internal predecessors, (75), 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) Word has length 45 [2025-01-08 22:45:09,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:45:09,849 INFO L225 Difference]: With dead ends: 327 [2025-01-08 22:45:09,849 INFO L226 Difference]: Without dead ends: 315 [2025-01-08 22:45:09,850 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2786 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=780, Invalid=10350, Unknown=0, NotChecked=0, Total=11130 [2025-01-08 22:45:09,850 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 70 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 2868 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 3040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 2868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:45:09,851 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 108 Invalid, 3040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 2868 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-01-08 22:45:09,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2025-01-08 22:45:09,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 249. [2025-01-08 22:45:09,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.3548387096774193) internal successors, (336), 248 states have internal predecessors, (336), 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) [2025-01-08 22:45:09,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 336 transitions. [2025-01-08 22:45:09,917 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 336 transitions. Word has length 45 [2025-01-08 22:45:09,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:45:09,917 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 336 transitions. [2025-01-08 22:45:09,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.4705882352941178) internal successors, (75), 51 states have internal predecessors, (75), 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) [2025-01-08 22:45:09,918 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 336 transitions. [2025-01-08 22:45:09,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-01-08 22:45:09,918 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:45:09,918 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:45:09,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-01-08 22:45:10,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-01-08 22:45:10,119 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:45:10,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:45:10,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1357003794, now seen corresponding path program 4 times [2025-01-08 22:45:10,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:45:10,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592133048] [2025-01-08 22:45:10,119 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:45:10,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:45:10,127 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 45 statements into 2 equivalence classes. [2025-01-08 22:45:10,132 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 41 of 45 statements. [2025-01-08 22:45:10,133 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-08 22:45:10,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:45:10,584 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 12 proven. 63 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-08 22:45:10,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:45:10,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592133048] [2025-01-08 22:45:10,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592133048] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:45:10,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044945622] [2025-01-08 22:45:10,585 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:45:10,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:45:10,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:45:10,586 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:45:10,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-01-08 22:45:10,650 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 45 statements into 2 equivalence classes. [2025-01-08 22:45:10,664 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 41 of 45 statements. [2025-01-08 22:45:10,664 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-08 22:45:10,664 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:45:10,665 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-01-08 22:45:10,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:45:10,734 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 13 [2025-01-08 22:45:10,780 INFO L349 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2025-01-08 22:45:10,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 26 [2025-01-08 22:45:10,877 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 18 proven. 50 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-01-08 22:45:10,877 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:45:11,571 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 53 treesize of output 47 [2025-01-08 22:45:11,580 INFO L349 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2025-01-08 22:45:11,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 58 [2025-01-08 22:45:11,593 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 18 proven. 50 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-01-08 22:45:11,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044945622] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:45:11,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:45:11,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 14, 15] total 41 [2025-01-08 22:45:11,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928272268] [2025-01-08 22:45:11,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:45:11,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-01-08 22:45:11,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:45:11,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-01-08 22:45:11,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=1417, Unknown=0, NotChecked=0, Total=1640 [2025-01-08 22:45:11,594 INFO L87 Difference]: Start difference. First operand 249 states and 336 transitions. Second operand has 41 states, 41 states have (on average 2.1951219512195124) internal successors, (90), 41 states have internal predecessors, (90), 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) [2025-01-08 22:45:13,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:45:13,010 INFO L93 Difference]: Finished difference Result 665 states and 912 transitions. [2025-01-08 22:45:13,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2025-01-08 22:45:13,011 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.1951219512195124) internal successors, (90), 41 states have internal predecessors, (90), 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) Word has length 45 [2025-01-08 22:45:13,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:45:13,012 INFO L225 Difference]: With dead ends: 665 [2025-01-08 22:45:13,012 INFO L226 Difference]: Without dead ends: 612 [2025-01-08 22:45:13,013 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2310 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1176, Invalid=6656, Unknown=0, NotChecked=0, Total=7832 [2025-01-08 22:45:13,013 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 196 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-08 22:45:13,014 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 94 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1128 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-08 22:45:13,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2025-01-08 22:45:13,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 486. [2025-01-08 22:45:13,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 485 states have (on average 1.3649484536082475) internal successors, (662), 485 states have internal predecessors, (662), 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) [2025-01-08 22:45:13,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 662 transitions. [2025-01-08 22:45:13,160 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 662 transitions. Word has length 45 [2025-01-08 22:45:13,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:45:13,160 INFO L471 AbstractCegarLoop]: Abstraction has 486 states and 662 transitions. [2025-01-08 22:45:13,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.1951219512195124) internal successors, (90), 41 states have internal predecessors, (90), 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) [2025-01-08 22:45:13,161 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 662 transitions. [2025-01-08 22:45:13,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-01-08 22:45:13,161 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:45:13,161 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:45:13,167 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-01-08 22:45:13,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-01-08 22:45:13,362 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:45:13,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:45:13,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1577934996, now seen corresponding path program 4 times [2025-01-08 22:45:13,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:45:13,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827260130] [2025-01-08 22:45:13,362 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:45:13,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:45:13,373 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 45 statements into 2 equivalence classes. [2025-01-08 22:45:13,379 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 41 of 45 statements. [2025-01-08 22:45:13,379 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-08 22:45:13,379 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:45:13,894 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 70 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-08 22:45:13,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:45:13,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827260130] [2025-01-08 22:45:13,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827260130] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:45:13,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56954626] [2025-01-08 22:45:13,895 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:45:13,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:45:13,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:45:13,896 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:45:13,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-01-08 22:45:13,967 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 45 statements into 2 equivalence classes. [2025-01-08 22:45:13,981 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 41 of 45 statements. [2025-01-08 22:45:13,981 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-08 22:45:13,981 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:45:13,982 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-01-08 22:45:13,983 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:45:14,025 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 13 [2025-01-08 22:45:14,070 INFO L349 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2025-01-08 22:45:14,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 26 [2025-01-08 22:45:14,101 INFO L349 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2025-01-08 22:45:14,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 26 [2025-01-08 22:45:14,132 INFO L349 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2025-01-08 22:45:14,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 26 [2025-01-08 22:45:14,191 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 25 proven. 30 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-01-08 22:45:14,191 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:45:39,539 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 53 treesize of output 47 [2025-01-08 22:45:39,552 INFO L349 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2025-01-08 22:45:39,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 144 treesize of output 114 [2025-01-08 22:45:39,565 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 20 proven. 30 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-01-08 22:45:39,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56954626] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:45:39,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:45:39,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 12, 12] total 38 [2025-01-08 22:45:39,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837576481] [2025-01-08 22:45:39,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:45:39,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-01-08 22:45:39,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:45:39,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-01-08 22:45:39,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1191, Unknown=8, NotChecked=0, Total=1406 [2025-01-08 22:45:39,567 INFO L87 Difference]: Start difference. First operand 486 states and 662 transitions. Second operand has 38 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 38 states have internal predecessors, (81), 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) [2025-01-08 22:45:41,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:45:41,996 INFO L93 Difference]: Finished difference Result 575 states and 774 transitions. [2025-01-08 22:45:41,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-01-08 22:45:41,996 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 38 states have internal predecessors, (81), 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) Word has length 45 [2025-01-08 22:45:41,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:45:41,997 INFO L225 Difference]: With dead ends: 575 [2025-01-08 22:45:41,997 INFO L226 Difference]: Without dead ends: 418 [2025-01-08 22:45:41,998 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 79 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1087 ImplicationChecksByTransitivity, 27.6s TimeCoverageRelationStatistics Valid=734, Invalid=3287, Unknown=11, NotChecked=0, Total=4032 [2025-01-08 22:45:41,998 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 79 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:45:41,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 64 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:45:41,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2025-01-08 22:45:42,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 387. [2025-01-08 22:45:42,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 1.305699481865285) internal successors, (504), 386 states have internal predecessors, (504), 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) [2025-01-08 22:45:42,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 504 transitions. [2025-01-08 22:45:42,099 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 504 transitions. Word has length 45 [2025-01-08 22:45:42,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:45:42,100 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 504 transitions. [2025-01-08 22:45:42,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 38 states have internal predecessors, (81), 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) [2025-01-08 22:45:42,100 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 504 transitions. [2025-01-08 22:45:42,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-01-08 22:45:42,100 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:45:42,100 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:45:42,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-01-08 22:45:42,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-01-08 22:45:42,301 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:45:42,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:45:42,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1000704344, now seen corresponding path program 5 times [2025-01-08 22:45:42,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:45:42,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896646689] [2025-01-08 22:45:42,301 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:45:42,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:45:42,307 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 45 statements into 6 equivalence classes. [2025-01-08 22:45:42,328 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 45 of 45 statements. [2025-01-08 22:45:42,328 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-01-08 22:45:42,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:45:42,644 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 9 proven. 41 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-01-08 22:45:42,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:45:42,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896646689] [2025-01-08 22:45:42,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896646689] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:45:42,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546711813] [2025-01-08 22:45:42,645 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:45:42,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:45:42,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:45:42,647 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:45:42,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-01-08 22:45:42,723 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 45 statements into 6 equivalence classes. [2025-01-08 22:45:44,744 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 45 of 45 statements. [2025-01-08 22:45:44,744 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-01-08 22:45:44,744 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:45:44,746 INFO L256 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-01-08 22:45:44,748 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:45:44,753 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 13 treesize of output 9 [2025-01-08 22:45:44,761 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:45:44,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2025-01-08 22:45:44,772 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:45:44,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 24 [2025-01-08 22:45:44,782 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:45:44,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 24 [2025-01-08 22:45:44,797 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:45:44,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 24 [2025-01-08 22:45:44,809 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 9 proven. 41 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-01-08 22:45:44,810 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:45:44,874 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 16 treesize of output 14 [2025-01-08 22:45:44,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2025-01-08 22:45:44,879 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 9 proven. 41 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-01-08 22:45:44,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546711813] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:45:44,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:45:44,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 20 [2025-01-08 22:45:44,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426689419] [2025-01-08 22:45:44,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:45:44,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-08 22:45:44,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:45:44,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-08 22:45:44,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2025-01-08 22:45:44,880 INFO L87 Difference]: Start difference. First operand 387 states and 504 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 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) [2025-01-08 22:45:45,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:45:45,171 INFO L93 Difference]: Finished difference Result 704 states and 925 transitions. [2025-01-08 22:45:45,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-08 22:45:45,171 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 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) Word has length 45 [2025-01-08 22:45:45,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:45:45,173 INFO L225 Difference]: With dead ends: 704 [2025-01-08 22:45:45,173 INFO L226 Difference]: Without dead ends: 401 [2025-01-08 22:45:45,173 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2025-01-08 22:45:45,173 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:45:45,173 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 81 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:45:45,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2025-01-08 22:45:45,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 381. [2025-01-08 22:45:45,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 1.3) internal successors, (494), 380 states have internal predecessors, (494), 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) [2025-01-08 22:45:45,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 494 transitions. [2025-01-08 22:45:45,276 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 494 transitions. Word has length 45 [2025-01-08 22:45:45,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:45:45,276 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 494 transitions. [2025-01-08 22:45:45,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 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) [2025-01-08 22:45:45,276 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 494 transitions. [2025-01-08 22:45:45,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-01-08 22:45:45,277 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:45:45,277 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:45:45,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-01-08 22:45:45,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-01-08 22:45:45,477 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:45:45,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:45:45,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1222990288, now seen corresponding path program 6 times [2025-01-08 22:45:45,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:45:45,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665574611] [2025-01-08 22:45:45,478 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:45:45,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:45:45,485 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 45 statements into 6 equivalence classes. [2025-01-08 22:45:45,503 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 45 of 45 statements. [2025-01-08 22:45:45,506 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-01-08 22:45:45,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:45:46,082 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 14 proven. 47 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-01-08 22:45:46,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:45:46,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665574611] [2025-01-08 22:45:46,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665574611] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:45:46,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702077450] [2025-01-08 22:45:46,082 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:45:46,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:45:46,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:45:46,084 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:45:46,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-01-08 22:45:46,154 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 45 statements into 6 equivalence classes. [2025-01-08 22:45:46,262 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 45 of 45 statements. [2025-01-08 22:45:46,262 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-01-08 22:45:46,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:45:46,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-01-08 22:45:46,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:45:46,323 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 13 treesize of output 9 [2025-01-08 22:45:46,350 INFO L349 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2025-01-08 22:45:46,351 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 1 case distinctions, treesize of input 25 treesize of output 24 [2025-01-08 22:45:46,434 INFO L349 Elim1Store]: treesize reduction 27, result has 48.1 percent of original size [2025-01-08 22:45:46,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 49 [2025-01-08 22:45:46,530 INFO L349 Elim1Store]: treesize reduction 35, result has 41.7 percent of original size [2025-01-08 22:45:46,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 59 treesize of output 70 [2025-01-08 22:45:46,660 INFO L349 Elim1Store]: treesize reduction 43, result has 36.8 percent of original size [2025-01-08 22:45:46,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 78 treesize of output 92 [2025-01-08 22:45:46,825 INFO L349 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2025-01-08 22:45:46,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 76 treesize of output 69 [2025-01-08 22:45:46,873 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 19 proven. 29 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-01-08 22:45:46,873 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:45:47,127 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 16 treesize of output 14 [2025-01-08 22:45:47,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2025-01-08 22:45:47,133 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-01-08 22:45:47,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702077450] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:45:47,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:45:47,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 17] total 43 [2025-01-08 22:45:47,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632769215] [2025-01-08 22:45:47,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:45:47,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-01-08 22:45:47,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:45:47,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-01-08 22:45:47,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1633, Unknown=0, NotChecked=0, Total=1806 [2025-01-08 22:45:47,135 INFO L87 Difference]: Start difference. First operand 381 states and 494 transitions. Second operand has 43 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 states have internal predecessors, (80), 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) [2025-01-08 22:45:48,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:45:48,616 INFO L93 Difference]: Finished difference Result 485 states and 621 transitions. [2025-01-08 22:45:48,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-01-08 22:45:48,616 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 states have internal predecessors, (80), 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) Word has length 45 [2025-01-08 22:45:48,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:45:48,617 INFO L225 Difference]: With dead ends: 485 [2025-01-08 22:45:48,617 INFO L226 Difference]: Without dead ends: 208 [2025-01-08 22:45:48,618 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1244 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=687, Invalid=4715, Unknown=0, NotChecked=0, Total=5402 [2025-01-08 22:45:48,618 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 78 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 87 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-01-08 22:45:48,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 90 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1031 Invalid, 1 Unknown, 0 Unchecked, 0.7s Time] [2025-01-08 22:45:48,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2025-01-08 22:45:48,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 199. [2025-01-08 22:45:48,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 1.2272727272727273) internal successors, (243), 198 states have internal predecessors, (243), 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) [2025-01-08 22:45:48,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 243 transitions. [2025-01-08 22:45:48,686 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 243 transitions. Word has length 45 [2025-01-08 22:45:48,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:45:48,687 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 243 transitions. [2025-01-08 22:45:48,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 states have internal predecessors, (80), 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) [2025-01-08 22:45:48,687 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 243 transitions. [2025-01-08 22:45:48,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-01-08 22:45:48,687 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:45:48,687 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:45:48,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-01-08 22:45:48,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-01-08 22:45:48,888 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:45:48,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:45:48,888 INFO L85 PathProgramCache]: Analyzing trace with hash -57389350, now seen corresponding path program 14 times [2025-01-08 22:45:48,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:45:48,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203473945] [2025-01-08 22:45:48,888 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:45:48,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:45:48,896 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 46 statements into 2 equivalence classes. [2025-01-08 22:45:48,900 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 46 of 46 statements. [2025-01-08 22:45:48,900 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:45:48,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:45:49,019 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 10 proven. 46 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-01-08 22:45:49,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:45:49,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203473945] [2025-01-08 22:45:49,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203473945] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:45:49,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114379258] [2025-01-08 22:45:49,019 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:45:49,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:45:49,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:45:49,021 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:45:49,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-01-08 22:45:49,092 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 46 statements into 2 equivalence classes. [2025-01-08 22:45:49,110 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 46 of 46 statements. [2025-01-08 22:45:49,110 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:45:49,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:45:49,111 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-08 22:45:49,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:45:49,190 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 15 proven. 41 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-01-08 22:45:49,190 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:45:49,269 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 15 proven. 41 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-01-08 22:45:49,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114379258] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:45:49,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:45:49,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2025-01-08 22:45:49,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868592578] [2025-01-08 22:45:49,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:45:49,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-08 22:45:49,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:45:49,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-08 22:45:49,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2025-01-08 22:45:49,270 INFO L87 Difference]: Start difference. First operand 199 states and 243 transitions. Second operand has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 states have internal predecessors, (57), 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) [2025-01-08 22:45:49,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:45:49,582 INFO L93 Difference]: Finished difference Result 256 states and 310 transitions. [2025-01-08 22:45:49,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-08 22:45:49,583 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 states have internal predecessors, (57), 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) Word has length 46 [2025-01-08 22:45:49,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:45:49,584 INFO L225 Difference]: With dead ends: 256 [2025-01-08 22:45:49,584 INFO L226 Difference]: Without dead ends: 235 [2025-01-08 22:45:49,584 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 72 SyntacticMatches, 12 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=274, Invalid=916, Unknown=0, NotChecked=0, Total=1190 [2025-01-08 22:45:49,584 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 118 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:45:49,585 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 29 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:45:49,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2025-01-08 22:45:49,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 173. [2025-01-08 22:45:49,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.2383720930232558) internal successors, (213), 172 states have internal predecessors, (213), 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) [2025-01-08 22:45:49,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 213 transitions. [2025-01-08 22:45:49,642 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 213 transitions. Word has length 46 [2025-01-08 22:45:49,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:45:49,643 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 213 transitions. [2025-01-08 22:45:49,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 states have internal predecessors, (57), 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) [2025-01-08 22:45:49,643 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 213 transitions. [2025-01-08 22:45:49,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-01-08 22:45:49,643 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:45:49,643 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:45:49,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2025-01-08 22:45:49,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-01-08 22:45:49,844 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:45:49,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:45:49,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1300635715, now seen corresponding path program 15 times [2025-01-08 22:45:49,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:45:49,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835497992] [2025-01-08 22:45:49,844 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:45:49,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:45:49,852 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 48 statements into 7 equivalence classes. [2025-01-08 22:45:49,870 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 48 of 48 statements. [2025-01-08 22:45:49,874 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-01-08 22:45:49,874 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:45:49,973 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 38 proven. 28 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-01-08 22:45:49,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:45:49,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835497992] [2025-01-08 22:45:49,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835497992] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:45:49,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146864121] [2025-01-08 22:45:49,973 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:45:49,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:45:49,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:45:49,974 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:45:49,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-01-08 22:45:50,050 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 48 statements into 7 equivalence classes. [2025-01-08 22:45:50,103 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 48 of 48 statements. [2025-01-08 22:45:50,103 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-01-08 22:45:50,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:45:50,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-01-08 22:45:50,105 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:45:50,222 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 64 proven. 15 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-08 22:45:50,222 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:45:50,336 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 51 proven. 28 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-08 22:45:50,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146864121] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:45:50,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:45:50,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 27 [2025-01-08 22:45:50,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226457750] [2025-01-08 22:45:50,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:45:50,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-01-08 22:45:50,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:45:50,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-01-08 22:45:50,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2025-01-08 22:45:50,341 INFO L87 Difference]: Start difference. First operand 173 states and 213 transitions. Second operand has 27 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 27 states have internal predecessors, (65), 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) [2025-01-08 22:45:50,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:45:50,598 INFO L93 Difference]: Finished difference Result 244 states and 295 transitions. [2025-01-08 22:45:50,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-08 22:45:50,598 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 27 states have internal predecessors, (65), 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) Word has length 48 [2025-01-08 22:45:50,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:45:50,599 INFO L225 Difference]: With dead ends: 244 [2025-01-08 22:45:50,599 INFO L226 Difference]: Without dead ends: 109 [2025-01-08 22:45:50,599 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 73 SyntacticMatches, 11 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=355, Invalid=977, Unknown=0, NotChecked=0, Total=1332 [2025-01-08 22:45:50,600 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 135 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:45:50,600 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 45 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:45:50,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2025-01-08 22:45:50,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 99. [2025-01-08 22:45:50,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.2346938775510203) internal successors, (121), 98 states have internal predecessors, (121), 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) [2025-01-08 22:45:50,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 121 transitions. [2025-01-08 22:45:50,629 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 121 transitions. Word has length 48 [2025-01-08 22:45:50,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:45:50,629 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 121 transitions. [2025-01-08 22:45:50,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 27 states have internal predecessors, (65), 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) [2025-01-08 22:45:50,629 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 121 transitions. [2025-01-08 22:45:50,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-01-08 22:45:50,629 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:45:50,629 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:45:50,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-01-08 22:45:50,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-01-08 22:45:50,830 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:45:50,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:45:50,830 INFO L85 PathProgramCache]: Analyzing trace with hash -2143410659, now seen corresponding path program 16 times [2025-01-08 22:45:50,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:45:50,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052448816] [2025-01-08 22:45:50,830 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:45:50,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:45:50,837 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 52 statements into 2 equivalence classes. [2025-01-08 22:45:50,843 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 52 of 52 statements. [2025-01-08 22:45:50,843 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:45:50,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:45:51,535 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-01-08 22:45:51,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:45:51,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052448816] [2025-01-08 22:45:51,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052448816] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:45:51,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751938864] [2025-01-08 22:45:51,536 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:45:51,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:45:51,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:45:51,538 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:45:51,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-01-08 22:45:51,626 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 52 statements into 2 equivalence classes. [2025-01-08 22:45:51,669 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 52 of 52 statements. [2025-01-08 22:45:51,669 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:45:51,670 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:45:51,671 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 75 conjuncts are in the unsatisfiable core [2025-01-08 22:45:51,674 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:45:51,677 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 11 treesize of output 7 [2025-01-08 22:45:51,780 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 19 treesize of output 11 [2025-01-08 22:45:51,849 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 19 treesize of output 11 [2025-01-08 22:45:51,922 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 19 treesize of output 11 [2025-01-08 22:45:52,016 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 19 treesize of output 11 [2025-01-08 22:45:52,120 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 19 treesize of output 11 [2025-01-08 22:45:52,276 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 19 treesize of output 11 [2025-01-08 22:45:52,327 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-01-08 22:45:52,327 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:45:53,199 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-01-08 22:45:53,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751938864] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:45:53,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:45:53,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 23, 23] total 62 [2025-01-08 22:45:53,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498817811] [2025-01-08 22:45:53,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:45:53,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2025-01-08 22:45:53,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:45:53,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2025-01-08 22:45:53,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=3563, Unknown=0, NotChecked=0, Total=3782 [2025-01-08 22:45:53,200 INFO L87 Difference]: Start difference. First operand 99 states and 121 transitions. Second operand has 62 states, 62 states have (on average 1.7258064516129032) internal successors, (107), 62 states have internal predecessors, (107), 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) [2025-01-08 22:45:55,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:45:55,664 INFO L93 Difference]: Finished difference Result 262 states and 326 transitions. [2025-01-08 22:45:55,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2025-01-08 22:45:55,665 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.7258064516129032) internal successors, (107), 62 states have internal predecessors, (107), 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) Word has length 52 [2025-01-08 22:45:55,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:45:55,665 INFO L225 Difference]: With dead ends: 262 [2025-01-08 22:45:55,666 INFO L226 Difference]: Without dead ends: 250 [2025-01-08 22:45:55,666 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3282 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=696, Invalid=10434, Unknown=0, NotChecked=0, Total=11130 [2025-01-08 22:45:55,667 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 47 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 3020 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 3118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 3020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:45:55,667 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 154 Invalid, 3118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 3020 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-01-08 22:45:55,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2025-01-08 22:45:55,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 214. [2025-01-08 22:45:55,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 1.244131455399061) internal successors, (265), 213 states have internal predecessors, (265), 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) [2025-01-08 22:45:55,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 265 transitions. [2025-01-08 22:45:55,739 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 265 transitions. Word has length 52 [2025-01-08 22:45:55,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:45:55,740 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 265 transitions. [2025-01-08 22:45:55,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.7258064516129032) internal successors, (107), 62 states have internal predecessors, (107), 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) [2025-01-08 22:45:55,740 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 265 transitions. [2025-01-08 22:45:55,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-01-08 22:45:55,740 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:45:55,740 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:45:55,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2025-01-08 22:45:55,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:45:55,941 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:45:55,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:45:55,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1342210011, now seen corresponding path program 5 times [2025-01-08 22:45:55,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:45:55,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843234123] [2025-01-08 22:45:55,941 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:45:55,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:45:55,949 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 52 statements into 7 equivalence classes. [2025-01-08 22:45:55,963 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 52 of 52 statements. [2025-01-08 22:45:55,963 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-01-08 22:45:55,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:45:56,239 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 23 proven. 77 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-01-08 22:45:56,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:45:56,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843234123] [2025-01-08 22:45:56,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843234123] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:45:56,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387908627] [2025-01-08 22:45:56,240 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:45:56,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:45:56,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:45:56,241 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:45:56,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-01-08 22:45:56,333 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 52 statements into 7 equivalence classes.