./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array5_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc 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-patterns/array5_pattern.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 3dd3ea9d30e76cbd39a744e53feb2b89c359b5b85c7df24161ceaf060cda3b02 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 10:23:40,625 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 10:23:40,688 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 10:23:40,693 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 10:23:40,693 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 10:23:40,719 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 10:23:40,720 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 10:23:40,720 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 10:23:40,721 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 10:23:40,721 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 10:23:40,722 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 10:23:40,722 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 10:23:40,722 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 10:23:40,722 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 10:23:40,723 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 10:23:40,723 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 10:23:40,723 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 10:23:40,723 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 10:23:40,724 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 10:23:40,724 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 10:23:40,724 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 10:23:40,724 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 10:23:40,724 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 10:23:40,724 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 10:23:40,724 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 10:23:40,724 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 10:23:40,724 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 10:23:40,724 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 10:23:40,724 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 10:23:40,725 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 10:23:40,725 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 10:23:40,725 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 10:23:40,725 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 10:23:40,725 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 10:23:40,726 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 10:23:40,726 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 10:23:40,726 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 10:23:40,726 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 10:23:40,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 10:23:40,726 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 10:23:40,726 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 10:23:40,726 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 10:23:40,726 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 10:23:40,726 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 -> 3dd3ea9d30e76cbd39a744e53feb2b89c359b5b85c7df24161ceaf060cda3b02 [2025-02-05 10:23:41,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 10:23:41,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 10:23:41,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 10:23:41,019 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 10:23:41,020 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 10:23:41,021 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array5_pattern.c [2025-02-05 10:23:42,323 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b835a8512/9c0d188fc0e84bdf8c87064d214ddcc6/FLAGeeab57ffb [2025-02-05 10:23:42,589 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 10:23:42,590 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-patterns/array5_pattern.c [2025-02-05 10:23:42,598 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b835a8512/9c0d188fc0e84bdf8c87064d214ddcc6/FLAGeeab57ffb [2025-02-05 10:23:42,632 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b835a8512/9c0d188fc0e84bdf8c87064d214ddcc6 [2025-02-05 10:23:42,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 10:23:42,638 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 10:23:42,639 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 10:23:42,639 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 10:23:42,643 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 10:23:42,644 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:23:42" (1/1) ... [2025-02-05 10:23:42,645 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14f35c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:23:42, skipping insertion in model container [2025-02-05 10:23:42,645 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:23:42" (1/1) ... [2025-02-05 10:23:42,658 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 10:23:42,845 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-patterns/array5_pattern.c[1890,1903] [2025-02-05 10:23:42,879 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 10:23:42,899 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 10:23:42,917 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-patterns/array5_pattern.c[1890,1903] [2025-02-05 10:23:42,931 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 10:23:42,948 INFO L204 MainTranslator]: Completed translation [2025-02-05 10:23:42,949 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:23:42 WrapperNode [2025-02-05 10:23:42,950 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 10:23:42,951 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 10:23:42,952 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 10:23:42,952 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 10:23:42,958 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:23:42" (1/1) ... [2025-02-05 10:23:42,965 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:23:42" (1/1) ... [2025-02-05 10:23:42,981 INFO L138 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 78 [2025-02-05 10:23:42,981 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 10:23:42,982 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 10:23:42,982 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 10:23:42,982 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 10:23:42,987 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:23:42" (1/1) ... [2025-02-05 10:23:42,987 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:23:42" (1/1) ... [2025-02-05 10:23:42,989 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:23:42" (1/1) ... [2025-02-05 10:23:42,998 INFO L175 MemorySlicer]: Split 10 memory accesses to 3 slices as follows [2, 4, 4]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 6 writes are split as follows [0, 3, 3]. [2025-02-05 10:23:42,998 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:23:42" (1/1) ... [2025-02-05 10:23:42,998 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:23:42" (1/1) ... [2025-02-05 10:23:43,005 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:23:42" (1/1) ... [2025-02-05 10:23:43,008 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:23:42" (1/1) ... [2025-02-05 10:23:43,009 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:23:42" (1/1) ... [2025-02-05 10:23:43,010 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:23:42" (1/1) ... [2025-02-05 10:23:43,012 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 10:23:43,013 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 10:23:43,013 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 10:23:43,013 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 10:23:43,014 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:23:42" (1/1) ... [2025-02-05 10:23:43,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 10:23:43,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:23:43,064 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) [2025-02-05 10:23:43,069 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 [2025-02-05 10:23:43,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 10:23:43,094 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-05 10:23:43,094 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-05 10:23:43,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 10:23:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-05 10:23:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-05 10:23:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-05 10:23:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-05 10:23:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-05 10:23:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-05 10:23:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 10:23:43,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 10:23:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-05 10:23:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-05 10:23:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-05 10:23:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-05 10:23:43,223 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 10:23:43,228 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 10:23:43,450 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L52: call ULTIMATE.dealloc(main_~#array1~0#1.base, main_~#array1~0#1.offset);havoc main_~#array1~0#1.base, main_~#array1~0#1.offset;call ULTIMATE.dealloc(main_~#array2~0#1.base, main_~#array2~0#1.offset);havoc main_~#array2~0#1.base, main_~#array2~0#1.offset; [2025-02-05 10:23:43,463 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2025-02-05 10:23:43,463 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 10:23:43,477 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 10:23:43,478 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 10:23:43,478 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 10:23:43 BoogieIcfgContainer [2025-02-05 10:23:43,479 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 10:23:43,482 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 10:23:43,483 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 10:23:43,487 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 10:23:43,487 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 10:23:42" (1/3) ... [2025-02-05 10:23:43,488 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76156e24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:23:43, skipping insertion in model container [2025-02-05 10:23:43,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:23:42" (2/3) ... [2025-02-05 10:23:43,488 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76156e24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:23:43, skipping insertion in model container [2025-02-05 10:23:43,489 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 10:23:43" (3/3) ... [2025-02-05 10:23:43,490 INFO L128 eAbstractionObserver]: Analyzing ICFG array5_pattern.c [2025-02-05 10:23:43,506 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 10:23:43,508 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array5_pattern.c that has 2 procedures, 24 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-02-05 10:23:43,561 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 10:23:43,571 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;@2d5bb87c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 10:23:43,571 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 10:23:43,575 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-05 10:23:43,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-05 10:23:43,581 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:23:43,581 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:23:43,582 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:23:43,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:23:43,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1225606633, now seen corresponding path program 1 times [2025-02-05 10:23:43,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:23:43,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568060103] [2025-02-05 10:23:43,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:23:43,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:23:43,701 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-05 10:23:43,725 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-05 10:23:43,726 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:23:43,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:23:43,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:23:43,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:23:43,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568060103] [2025-02-05 10:23:43,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568060103] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:23:43,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:23:43,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-05 10:23:43,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332739676] [2025-02-05 10:23:43,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:23:43,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-05 10:23:43,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:23:43,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-05 10:23:43,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 10:23:43,822 INFO L87 Difference]: Start difference. First operand has 24 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-05 10:23:43,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:23:43,837 INFO L93 Difference]: Finished difference Result 45 states and 62 transitions. [2025-02-05 10:23:43,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-05 10:23:43,840 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2025-02-05 10:23:43,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:23:43,845 INFO L225 Difference]: With dead ends: 45 [2025-02-05 10:23:43,846 INFO L226 Difference]: Without dead ends: 20 [2025-02-05 10:23:43,849 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 [2025-02-05 10:23:43,853 INFO L435 NwaCegarLoop]: 29 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, 29 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 [2025-02-05 10:23:43,853 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:23:43,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2025-02-05 10:23:43,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2025-02-05 10:23:43,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-05 10:23:43,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2025-02-05 10:23:43,886 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 14 [2025-02-05 10:23:43,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:23:43,886 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2025-02-05 10:23:43,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-05 10:23:43,887 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2025-02-05 10:23:43,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-02-05 10:23:43,888 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:23:43,888 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:23:43,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 10:23:43,889 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:23:43,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:23:43,889 INFO L85 PathProgramCache]: Analyzing trace with hash -958553730, now seen corresponding path program 1 times [2025-02-05 10:23:43,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:23:43,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049257319] [2025-02-05 10:23:43,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:23:43,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:23:43,913 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-05 10:23:43,938 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-05 10:23:43,938 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:23:43,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:23:44,095 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 10:23:44,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:23:44,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049257319] [2025-02-05 10:23:44,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049257319] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:23:44,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:23:44,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 10:23:44,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185303546] [2025-02-05 10:23:44,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:23:44,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 10:23:44,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:23:44,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 10:23:44,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 10:23:44,099 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-05 10:23:44,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:23:44,144 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2025-02-05 10:23:44,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 10:23:44,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2025-02-05 10:23:44,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:23:44,145 INFO L225 Difference]: With dead ends: 40 [2025-02-05 10:23:44,146 INFO L226 Difference]: Without dead ends: 25 [2025-02-05 10:23:44,146 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 10:23:44,147 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:23:44,147 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 34 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:23:44,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-02-05 10:23:44,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2025-02-05 10:23:44,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-05 10:23:44,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2025-02-05 10:23:44,156 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 23 [2025-02-05 10:23:44,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:23:44,157 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2025-02-05 10:23:44,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-05 10:23:44,158 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2025-02-05 10:23:44,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-02-05 10:23:44,159 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:23:44,159 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:23:44,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 10:23:44,159 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:23:44,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:23:44,163 INFO L85 PathProgramCache]: Analyzing trace with hash -71050049, now seen corresponding path program 1 times [2025-02-05 10:23:44,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:23:44,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217371930] [2025-02-05 10:23:44,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:23:44,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:23:44,186 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-05 10:23:44,215 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-05 10:23:44,218 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:23:44,219 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:23:44,451 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 10:23:44,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:23:44,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217371930] [2025-02-05 10:23:44,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217371930] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:23:44,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:23:44,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 10:23:44,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046284836] [2025-02-05 10:23:44,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:23:44,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 10:23:44,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:23:44,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 10:23:44,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 10:23:44,453 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-05 10:23:44,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:23:44,473 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2025-02-05 10:23:44,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 10:23:44,474 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2025-02-05 10:23:44,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:23:44,475 INFO L225 Difference]: With dead ends: 28 [2025-02-05 10:23:44,475 INFO L226 Difference]: Without dead ends: 25 [2025-02-05 10:23:44,476 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 10:23:44,476 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 4 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:23:44,478 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 54 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:23:44,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-02-05 10:23:44,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2025-02-05 10:23:44,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-05 10:23:44,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2025-02-05 10:23:44,522 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 23 [2025-02-05 10:23:44,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:23:44,522 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2025-02-05 10:23:44,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-05 10:23:44,523 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2025-02-05 10:23:44,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-05 10:23:44,530 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:23:44,530 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:23:44,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 10:23:44,531 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:23:44,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:23:44,532 INFO L85 PathProgramCache]: Analyzing trace with hash 2092447530, now seen corresponding path program 1 times [2025-02-05 10:23:44,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:23:44,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013028587] [2025-02-05 10:23:44,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:23:44,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:23:44,579 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-05 10:23:44,600 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-05 10:23:44,607 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:23:44,608 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:23:44,802 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 10:23:44,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:23:44,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013028587] [2025-02-05 10:23:44,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013028587] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:23:44,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:23:44,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 10:23:44,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734967020] [2025-02-05 10:23:44,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:23:44,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 10:23:44,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:23:44,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 10:23:44,807 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-05 10:23:44,807 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-05 10:23:44,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:23:44,880 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2025-02-05 10:23:44,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 10:23:44,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2025-02-05 10:23:44,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:23:44,881 INFO L225 Difference]: With dead ends: 48 [2025-02-05 10:23:44,881 INFO L226 Difference]: Without dead ends: 27 [2025-02-05 10:23:44,882 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-05 10:23:44,882 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 7 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:23:44,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 54 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:23:44,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-02-05 10:23:44,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2025-02-05 10:23:44,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-05 10:23:44,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2025-02-05 10:23:44,892 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 24 [2025-02-05 10:23:44,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:23:44,892 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2025-02-05 10:23:44,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-05 10:23:44,893 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2025-02-05 10:23:44,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-02-05 10:23:44,894 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:23:44,894 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:23:44,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-05 10:23:44,895 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:23:44,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:23:44,895 INFO L85 PathProgramCache]: Analyzing trace with hash 554131280, now seen corresponding path program 1 times [2025-02-05 10:23:44,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:23:44,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99005041] [2025-02-05 10:23:44,895 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:23:44,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:23:44,910 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-05 10:23:44,951 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-05 10:23:44,953 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:23:44,953 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 10:23:44,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1124538243] [2025-02-05 10:23:44,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:23:44,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:23:44,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:23:44,961 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) [2025-02-05 10:23:44,963 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 [2025-02-05 10:23:45,026 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-05 10:23:45,076 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-05 10:23:45,076 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:23:45,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:23:45,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-05 10:23:45,085 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:23:45,343 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 [2025-02-05 10:23:45,351 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 9 [2025-02-05 10:23:45,452 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:23:45,453 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:23:45,572 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 34 treesize of output 32 [2025-02-05 10:23:45,594 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 32 treesize of output 30 [2025-02-05 10:23:45,612 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 49 treesize of output 47 [2025-02-05 10:23:46,094 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 10:23:46,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:23:46,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99005041] [2025-02-05 10:23:46,095 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-05 10:23:46,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124538243] [2025-02-05 10:23:46,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124538243] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:23:46,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-05 10:23:46,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 21 [2025-02-05 10:23:46,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667620568] [2025-02-05 10:23:46,096 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-05 10:23:46,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-05 10:23:46,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:23:46,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-05 10:23:46,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2025-02-05 10:23:46,097 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 18 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-05 10:23:46,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:23:46,795 INFO L93 Difference]: Finished difference Result 87 states and 113 transitions. [2025-02-05 10:23:46,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-05 10:23:46,795 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 18 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 25 [2025-02-05 10:23:46,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:23:46,797 INFO L225 Difference]: With dead ends: 87 [2025-02-05 10:23:46,797 INFO L226 Difference]: Without dead ends: 69 [2025-02-05 10:23:46,798 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=203, Invalid=919, Unknown=0, NotChecked=0, Total=1122 [2025-02-05 10:23:46,798 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 62 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 10:23:46,798 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 201 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 10:23:46,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2025-02-05 10:23:46,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 54. [2025-02-05 10:23:46,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 44 states have (on average 1.3181818181818181) internal successors, (58), 44 states have internal predecessors, (58), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-05 10:23:46,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2025-02-05 10:23:46,819 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 72 transitions. Word has length 25 [2025-02-05 10:23:46,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:23:46,819 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 72 transitions. [2025-02-05 10:23:46,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 18 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-05 10:23:46,819 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 72 transitions. [2025-02-05 10:23:46,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-02-05 10:23:46,820 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:23:46,820 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:23:46,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-05 10:23:47,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:23:47,022 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:23:47,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:23:47,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1767751, now seen corresponding path program 2 times [2025-02-05 10:23:47,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:23:47,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381443867] [2025-02-05 10:23:47,024 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:23:47,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:23:47,035 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-02-05 10:23:47,048 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-02-05 10:23:47,048 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:23:47,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:23:47,169 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 10:23:47,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:23:47,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381443867] [2025-02-05 10:23:47,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381443867] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:23:47,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278572235] [2025-02-05 10:23:47,170 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:23:47,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:23:47,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:23:47,172 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) [2025-02-05 10:23:47,176 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 [2025-02-05 10:23:47,216 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-02-05 10:23:47,235 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-02-05 10:23:47,236 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:23:47,236 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:23:47,237 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-05 10:23:47,238 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:23:47,291 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:23:47,292 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:23:47,352 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 10:23:47,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278572235] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:23:47,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:23:47,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-02-05 10:23:47,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228308398] [2025-02-05 10:23:47,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:23:47,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-05 10:23:47,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:23:47,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-05 10:23:47,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2025-02-05 10:23:47,355 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-05 10:23:47,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:23:47,501 INFO L93 Difference]: Finished difference Result 120 states and 161 transitions. [2025-02-05 10:23:47,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 10:23:47,502 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2025-02-05 10:23:47,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:23:47,503 INFO L225 Difference]: With dead ends: 120 [2025-02-05 10:23:47,503 INFO L226 Difference]: Without dead ends: 82 [2025-02-05 10:23:47,503 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2025-02-05 10:23:47,504 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 40 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:23:47,505 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 98 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:23:47,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2025-02-05 10:23:47,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 69. [2025-02-05 10:23:47,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 57 states have (on average 1.280701754385965) internal successors, (73), 57 states have internal predecessors, (73), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-05 10:23:47,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 91 transitions. [2025-02-05 10:23:47,518 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 91 transitions. Word has length 26 [2025-02-05 10:23:47,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:23:47,518 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 91 transitions. [2025-02-05 10:23:47,520 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-05 10:23:47,520 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 91 transitions. [2025-02-05 10:23:47,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-02-05 10:23:47,521 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:23:47,521 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:23:47,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-05 10:23:47,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:23:47,722 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:23:47,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:23:47,722 INFO L85 PathProgramCache]: Analyzing trace with hash 110967786, now seen corresponding path program 3 times [2025-02-05 10:23:47,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:23:47,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439853275] [2025-02-05 10:23:47,722 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:23:47,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:23:47,751 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 3 equivalence classes. [2025-02-05 10:23:47,783 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-02-05 10:23:47,783 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-05 10:23:47,784 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:23:47,891 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 10:23:47,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:23:47,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439853275] [2025-02-05 10:23:47,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439853275] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:23:47,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325889645] [2025-02-05 10:23:47,892 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:23:47,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:23:47,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:23:47,894 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) [2025-02-05 10:23:47,898 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 [2025-02-05 10:23:47,941 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 3 equivalence classes. [2025-02-05 10:23:47,958 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 24 of 26 statements. [2025-02-05 10:23:47,959 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-05 10:23:47,959 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:23:47,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-05 10:23:47,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:23:48,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2025-02-05 10:23:48,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2025-02-05 10:23:48,285 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:23:48,285 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 33 treesize of output 25 [2025-02-05 10:23:48,301 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:23:48,302 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 32 treesize of output 24 [2025-02-05 10:23:48,396 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 10:23:48,397 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:23:48,631 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 42 treesize of output 40 [2025-02-05 10:23:48,640 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 40 treesize of output 38 [2025-02-05 10:23:48,653 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 64 treesize of output 58 [2025-02-05 10:23:48,663 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 76 treesize of output 64 [2025-02-05 10:23:48,903 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 10:23:48,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325889645] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:23:48,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:23:48,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 11] total 24 [2025-02-05 10:23:48,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483521908] [2025-02-05 10:23:48,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:23:48,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-05 10:23:48,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:23:48,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-05 10:23:48,908 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2025-02-05 10:23:48,908 INFO L87 Difference]: Start difference. First operand 69 states and 91 transitions. Second operand has 24 states, 24 states have (on average 2.0) internal successors, (48), 22 states have internal predecessors, (48), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-05 10:23:50,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:23:50,253 INFO L93 Difference]: Finished difference Result 137 states and 178 transitions. [2025-02-05 10:23:50,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-02-05 10:23:50,254 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0) internal successors, (48), 22 states have internal predecessors, (48), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 26 [2025-02-05 10:23:50,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:23:50,255 INFO L225 Difference]: With dead ends: 137 [2025-02-05 10:23:50,256 INFO L226 Difference]: Without dead ends: 44 [2025-02-05 10:23:50,258 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=438, Invalid=1818, Unknown=0, NotChecked=0, Total=2256 [2025-02-05 10:23:50,259 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 119 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-05 10:23:50,260 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 233 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-05 10:23:50,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2025-02-05 10:23:50,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2025-02-05 10:23:50,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-05 10:23:50,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2025-02-05 10:23:50,271 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 26 [2025-02-05 10:23:50,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:23:50,271 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2025-02-05 10:23:50,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.0) internal successors, (48), 22 states have internal predecessors, (48), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-05 10:23:50,271 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2025-02-05 10:23:50,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-02-05 10:23:50,272 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:23:50,272 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:23:50,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-05 10:23:50,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:23:50,473 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:23:50,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:23:50,473 INFO L85 PathProgramCache]: Analyzing trace with hash -854934177, now seen corresponding path program 4 times [2025-02-05 10:23:50,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:23:50,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214875467] [2025-02-05 10:23:50,474 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:23:50,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:23:50,483 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-02-05 10:23:50,507 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-02-05 10:23:50,507 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 10:23:50,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 10:23:50,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1804690635] [2025-02-05 10:23:50,509 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:23:50,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:23:50,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:23:50,512 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) [2025-02-05 10:23:50,554 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 [2025-02-05 10:23:50,601 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-02-05 10:23:50,628 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-02-05 10:23:50,629 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 10:23:50,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:23:50,630 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-02-05 10:23:50,634 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:23:50,677 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 [2025-02-05 10:23:50,685 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 [2025-02-05 10:23:50,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-05 10:23:50,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-05 10:23:51,076 INFO L349 Elim1Store]: treesize reduction 28, result has 45.1 percent of original size [2025-02-05 10:23:51,076 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 3 case distinctions, treesize of input 28 treesize of output 40 [2025-02-05 10:23:51,107 INFO L349 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2025-02-05 10:23:51,108 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 3 case distinctions, treesize of input 28 treesize of output 38 [2025-02-05 10:23:51,829 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:23:51,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 131 treesize of output 113 [2025-02-05 10:23:51,848 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:23:51,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 100 treesize of output 78 [2025-02-05 10:23:51,998 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:23:51,998 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:23:52,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:23:52,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214875467] [2025-02-05 10:23:52,225 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-05 10:23:52,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804690635] [2025-02-05 10:23:52,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804690635] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:23:52,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-05 10:23:52,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2025-02-05 10:23:52,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794433599] [2025-02-05 10:23:52,226 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-05 10:23:52,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-05 10:23:52,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:23:52,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-05 10:23:52,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2025-02-05 10:23:52,228 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-05 10:23:52,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:23:52,532 INFO L93 Difference]: Finished difference Result 86 states and 109 transitions. [2025-02-05 10:23:52,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-05 10:23:52,532 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2025-02-05 10:23:52,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:23:52,533 INFO L225 Difference]: With dead ends: 86 [2025-02-05 10:23:52,533 INFO L226 Difference]: Without dead ends: 62 [2025-02-05 10:23:52,534 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2025-02-05 10:23:52,534 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 17 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 10:23:52,534 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 132 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 10:23:52,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2025-02-05 10:23:52,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 48. [2025-02-05 10:23:52,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 40 states have (on average 1.25) internal successors, (50), 40 states have internal predecessors, (50), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-05 10:23:52,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2025-02-05 10:23:52,543 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 27 [2025-02-05 10:23:52,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:23:52,544 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2025-02-05 10:23:52,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-05 10:23:52,544 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2025-02-05 10:23:52,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-02-05 10:23:52,544 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:23:52,544 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:23:52,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-05 10:23:52,745 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,SelfDestructingSolverStorable7 [2025-02-05 10:23:52,746 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:23:52,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:23:52,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1051447682, now seen corresponding path program 1 times [2025-02-05 10:23:52,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:23:52,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259845380] [2025-02-05 10:23:52,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:23:52,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:23:52,755 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-05 10:23:52,787 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-05 10:23:52,787 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:23:52,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 10:23:52,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [447048079] [2025-02-05 10:23:52,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:23:52,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:23:52,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:23:52,791 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) [2025-02-05 10:23:52,794 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 [2025-02-05 10:23:52,848 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-05 10:23:52,867 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-05 10:23:52,868 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:23:52,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:23:52,874 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-02-05 10:23:52,879 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:23:52,913 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 [2025-02-05 10:23:52,923 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 [2025-02-05 10:23:52,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-05 10:23:52,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-05 10:23:53,366 INFO L349 Elim1Store]: treesize reduction 80, result has 36.0 percent of original size [2025-02-05 10:23:53,367 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 10 case distinctions, treesize of input 42 treesize of output 66 [2025-02-05 10:23:53,453 INFO L349 Elim1Store]: treesize reduction 88, result has 33.8 percent of original size [2025-02-05 10:23:53,453 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 10 case distinctions, treesize of input 42 treesize of output 68 [2025-02-05 10:23:53,837 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:23:53,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 63 [2025-02-05 10:23:53,867 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:23:53,867 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:23:54,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:23:54,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259845380] [2025-02-05 10:23:54,093 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-05 10:23:54,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447048079] [2025-02-05 10:23:54,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447048079] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:23:54,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-05 10:23:54,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2025-02-05 10:23:54,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169494626] [2025-02-05 10:23:54,094 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-05 10:23:54,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-05 10:23:54,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:23:54,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-05 10:23:54,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2025-02-05 10:23:54,096 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 13 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-05 10:23:54,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:23:54,512 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions. [2025-02-05 10:23:54,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-05 10:23:54,513 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 13 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2025-02-05 10:23:54,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:23:54,513 INFO L225 Difference]: With dead ends: 61 [2025-02-05 10:23:54,513 INFO L226 Difference]: Without dead ends: 58 [2025-02-05 10:23:54,514 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2025-02-05 10:23:54,514 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 17 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 10:23:54,515 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 123 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 10:23:54,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2025-02-05 10:23:54,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 47. [2025-02-05 10:23:54,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 39 states have internal predecessors, (49), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-05 10:23:54,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2025-02-05 10:23:54,529 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 27 [2025-02-05 10:23:54,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:23:54,531 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2025-02-05 10:23:54,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 13 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-05 10:23:54,531 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2025-02-05 10:23:54,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-02-05 10:23:54,532 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:23:54,532 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:23:54,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-05 10:23:54,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:23:54,737 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:23:54,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:23:54,737 INFO L85 PathProgramCache]: Analyzing trace with hash -733123958, now seen corresponding path program 5 times [2025-02-05 10:23:54,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:23:54,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62100167] [2025-02-05 10:23:54,738 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:23:54,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:23:54,745 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 28 statements into 3 equivalence classes. [2025-02-05 10:23:54,768 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 28 of 28 statements. [2025-02-05 10:23:54,768 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-05 10:23:54,768 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:23:54,907 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 10:23:54,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:23:54,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62100167] [2025-02-05 10:23:54,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62100167] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:23:54,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182714613] [2025-02-05 10:23:54,907 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:23:54,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:23:54,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:23:54,910 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) [2025-02-05 10:23:54,911 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 [2025-02-05 10:23:54,947 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 28 statements into 3 equivalence classes. [2025-02-05 10:23:54,962 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 28 of 28 statements. [2025-02-05 10:23:54,963 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-05 10:23:54,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:23:54,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-05 10:23:54,965 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:23:55,047 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:23:55,047 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:23:55,097 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 10:23:55,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182714613] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:23:55,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:23:55,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2025-02-05 10:23:55,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420370947] [2025-02-05 10:23:55,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:23:55,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-05 10:23:55,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:23:55,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-05 10:23:55,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2025-02-05 10:23:55,099 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-05 10:23:55,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:23:55,283 INFO L93 Difference]: Finished difference Result 118 states and 151 transitions. [2025-02-05 10:23:55,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 10:23:55,284 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2025-02-05 10:23:55,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:23:55,285 INFO L225 Difference]: With dead ends: 118 [2025-02-05 10:23:55,285 INFO L226 Difference]: Without dead ends: 91 [2025-02-05 10:23:55,286 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2025-02-05 10:23:55,286 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 104 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:23:55,286 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 114 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:23:55,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2025-02-05 10:23:55,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 77. [2025-02-05 10:23:55,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 64 states have (on average 1.28125) internal successors, (82), 64 states have internal predecessors, (82), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-05 10:23:55,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 98 transitions. [2025-02-05 10:23:55,311 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 98 transitions. Word has length 28 [2025-02-05 10:23:55,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:23:55,311 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 98 transitions. [2025-02-05 10:23:55,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-05 10:23:55,311 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 98 transitions. [2025-02-05 10:23:55,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-02-05 10:23:55,314 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:23:55,314 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:23:55,325 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-05 10:23:55,514 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,SelfDestructingSolverStorable9 [2025-02-05 10:23:55,515 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:23:55,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:23:55,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1533289607, now seen corresponding path program 6 times [2025-02-05 10:23:55,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:23:55,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084098860] [2025-02-05 10:23:55,515 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:23:55,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:23:55,549 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 28 statements into 4 equivalence classes. [2025-02-05 10:23:55,579 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 28 of 28 statements. [2025-02-05 10:23:55,579 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-02-05 10:23:55,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:23:55,779 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 10:23:55,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:23:55,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084098860] [2025-02-05 10:23:55,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084098860] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:23:55,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248970999] [2025-02-05 10:23:55,780 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:23:55,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:23:55,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:23:55,783 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) [2025-02-05 10:23:55,784 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 [2025-02-05 10:23:55,822 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 28 statements into 4 equivalence classes. [2025-02-05 10:23:55,847 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 28 of 28 statements. [2025-02-05 10:23:55,847 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-02-05 10:23:55,847 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:23:55,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-05 10:23:55,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:23:55,910 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:23:55,910 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:23:55,969 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 10:23:55,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248970999] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:23:55,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:23:55,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2025-02-05 10:23:55,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112743519] [2025-02-05 10:23:55,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:23:55,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-05 10:23:55,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:23:55,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-05 10:23:55,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2025-02-05 10:23:55,971 INFO L87 Difference]: Start difference. First operand 77 states and 98 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-05 10:23:56,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:23:56,294 INFO L93 Difference]: Finished difference Result 88 states and 108 transitions. [2025-02-05 10:23:56,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 10:23:56,295 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2025-02-05 10:23:56,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:23:56,296 INFO L225 Difference]: With dead ends: 88 [2025-02-05 10:23:56,296 INFO L226 Difference]: Without dead ends: 85 [2025-02-05 10:23:56,296 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2025-02-05 10:23:56,297 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 41 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 10:23:56,297 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 128 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 10:23:56,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2025-02-05 10:23:56,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 78. [2025-02-05 10:23:56,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 65 states have internal predecessors, (83), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-05 10:23:56,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 99 transitions. [2025-02-05 10:23:56,318 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 99 transitions. Word has length 28 [2025-02-05 10:23:56,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:23:56,319 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 99 transitions. [2025-02-05 10:23:56,319 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-05 10:23:56,319 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 99 transitions. [2025-02-05 10:23:56,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-02-05 10:23:56,319 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:23:56,319 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:23:56,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-05 10:23:56,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:23:56,525 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:23:56,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:23:56,525 INFO L85 PathProgramCache]: Analyzing trace with hash -287305808, now seen corresponding path program 7 times [2025-02-05 10:23:56,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:23:56,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969513065] [2025-02-05 10:23:56,526 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 10:23:56,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:23:56,535 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-05 10:23:56,589 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-05 10:23:56,589 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:23:56,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 10:23:56,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1391894334] [2025-02-05 10:23:56,592 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 10:23:56,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:23:56,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:23:56,594 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) [2025-02-05 10:23:56,596 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 [2025-02-05 10:23:56,643 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-05 10:23:56,663 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-05 10:23:56,663 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:23:56,664 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:23:56,665 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 52 conjuncts are in the unsatisfiable core [2025-02-05 10:23:56,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:23:56,691 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 [2025-02-05 10:23:56,701 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 [2025-02-05 10:23:56,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-05 10:23:56,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-05 10:23:56,781 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:23:56,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2025-02-05 10:23:56,795 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:23:56,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2025-02-05 10:23:57,241 INFO L349 Elim1Store]: treesize reduction 132, result has 33.7 percent of original size [2025-02-05 10:23:57,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 56 treesize of output 96 [2025-02-05 10:23:57,312 INFO L349 Elim1Store]: treesize reduction 120, result has 35.8 percent of original size [2025-02-05 10:23:57,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 56 treesize of output 94 [2025-02-05 10:23:58,468 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:23:58,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 219 treesize of output 185 [2025-02-05 10:23:58,496 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:23:58,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 164 treesize of output 126 [2025-02-05 10:23:59,003 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:23:59,003 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:24:03,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:24:03,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969513065] [2025-02-05 10:24:03,061 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-05 10:24:03,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391894334] [2025-02-05 10:24:03,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391894334] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:24:03,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-05 10:24:03,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2025-02-05 10:24:03,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387612094] [2025-02-05 10:24:03,061 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-05 10:24:03,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-05 10:24:03,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:24:03,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-05 10:24:03,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2025-02-05 10:24:03,062 INFO L87 Difference]: Start difference. First operand 78 states and 99 transitions. Second operand has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 15 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-05 10:24:03,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:24:03,492 INFO L93 Difference]: Finished difference Result 103 states and 128 transitions. [2025-02-05 10:24:03,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-05 10:24:03,493 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 15 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2025-02-05 10:24:03,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:24:03,494 INFO L225 Difference]: With dead ends: 103 [2025-02-05 10:24:03,494 INFO L226 Difference]: Without dead ends: 100 [2025-02-05 10:24:03,494 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2025-02-05 10:24:03,495 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 20 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 10:24:03,495 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 186 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 10:24:03,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2025-02-05 10:24:03,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 90. [2025-02-05 10:24:03,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 75 states have (on average 1.2666666666666666) internal successors, (95), 75 states have internal predecessors, (95), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-05 10:24:03,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 113 transitions. [2025-02-05 10:24:03,523 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 113 transitions. Word has length 29 [2025-02-05 10:24:03,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:24:03,524 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 113 transitions. [2025-02-05 10:24:03,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 15 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-05 10:24:03,524 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 113 transitions. [2025-02-05 10:24:03,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-02-05 10:24:03,526 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:24:03,526 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:24:03,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-05 10:24:03,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:24:03,730 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:24:03,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:24:03,732 INFO L85 PathProgramCache]: Analyzing trace with hash -2084257167, now seen corresponding path program 2 times [2025-02-05 10:24:03,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:24:03,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233754345] [2025-02-05 10:24:03,732 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:24:03,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:24:03,740 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-02-05 10:24:03,765 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-02-05 10:24:03,765 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:24:03,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 10:24:03,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [549949454] [2025-02-05 10:24:03,767 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:24:03,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:24:03,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:24:03,769 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) [2025-02-05 10:24:03,771 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 [2025-02-05 10:24:03,820 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-02-05 10:24:03,841 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-02-05 10:24:03,841 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:24:03,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:24:03,843 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 51 conjuncts are in the unsatisfiable core [2025-02-05 10:24:03,846 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:24:03,874 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 [2025-02-05 10:24:03,881 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 [2025-02-05 10:24:03,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-05 10:24:03,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-05 10:24:03,963 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:24:03,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2025-02-05 10:24:03,983 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:24:03,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2025-02-05 10:24:04,275 INFO L349 Elim1Store]: treesize reduction 36, result has 48.6 percent of original size [2025-02-05 10:24:04,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 52 [2025-02-05 10:24:04,317 INFO L349 Elim1Store]: treesize reduction 42, result has 44.7 percent of original size [2025-02-05 10:24:04,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 54 [2025-02-05 10:24:05,123 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:24:05,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 216 treesize of output 174 [2025-02-05 10:24:05,141 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:24:05,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 155 treesize of output 125 [2025-02-05 10:24:05,597 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:24:05,597 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:24:12,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:24:12,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233754345] [2025-02-05 10:24:12,746 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-05 10:24:12,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549949454] [2025-02-05 10:24:12,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549949454] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:24:12,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-05 10:24:12,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2025-02-05 10:24:12,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378253836] [2025-02-05 10:24:12,746 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-05 10:24:12,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-05 10:24:12,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:24:12,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-05 10:24:12,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=272, Unknown=1, NotChecked=0, Total=342 [2025-02-05 10:24:12,747 INFO L87 Difference]: Start difference. First operand 90 states and 113 transitions. Second operand has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-05 10:24:13,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:24:13,166 INFO L93 Difference]: Finished difference Result 107 states and 133 transitions. [2025-02-05 10:24:13,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-05 10:24:13,167 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2025-02-05 10:24:13,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:24:13,167 INFO L225 Difference]: With dead ends: 107 [2025-02-05 10:24:13,167 INFO L226 Difference]: Without dead ends: 104 [2025-02-05 10:24:13,168 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=79, Invalid=300, Unknown=1, NotChecked=0, Total=380 [2025-02-05 10:24:13,168 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 18 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 10:24:13,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 190 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 10:24:13,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2025-02-05 10:24:13,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 90. [2025-02-05 10:24:13,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 75 states have (on average 1.2666666666666666) internal successors, (95), 75 states have internal predecessors, (95), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-05 10:24:13,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 113 transitions. [2025-02-05 10:24:13,190 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 113 transitions. Word has length 29 [2025-02-05 10:24:13,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:24:13,190 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 113 transitions. [2025-02-05 10:24:13,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-05 10:24:13,190 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 113 transitions. [2025-02-05 10:24:13,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-02-05 10:24:13,191 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:24:13,191 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:24:13,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-05 10:24:13,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:24:13,392 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:24:13,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:24:13,392 INFO L85 PathProgramCache]: Analyzing trace with hash -316513703, now seen corresponding path program 8 times [2025-02-05 10:24:13,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:24:13,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292620072] [2025-02-05 10:24:13,392 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:24:13,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:24:13,403 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-02-05 10:24:13,426 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-02-05 10:24:13,426 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:24:13,426 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:24:13,631 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 10:24:13,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:24:13,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292620072] [2025-02-05 10:24:13,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292620072] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:24:13,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800025114] [2025-02-05 10:24:13,632 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:24:13,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:24:13,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:24:13,634 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) [2025-02-05 10:24:13,636 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 [2025-02-05 10:24:13,683 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-02-05 10:24:13,703 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-02-05 10:24:13,703 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:24:13,703 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:24:13,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-05 10:24:13,706 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:24:13,871 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:24:13,871 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:24:13,948 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 10:24:13,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800025114] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:24:13,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:24:13,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2025-02-05 10:24:13,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399906547] [2025-02-05 10:24:13,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:24:13,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-05 10:24:13,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:24:13,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-05 10:24:13,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2025-02-05 10:24:13,950 INFO L87 Difference]: Start difference. First operand 90 states and 113 transitions. Second operand has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-05 10:24:14,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:24:14,323 INFO L93 Difference]: Finished difference Result 231 states and 299 transitions. [2025-02-05 10:24:14,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-05 10:24:14,324 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2025-02-05 10:24:14,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:24:14,326 INFO L225 Difference]: With dead ends: 231 [2025-02-05 10:24:14,326 INFO L226 Difference]: Without dead ends: 170 [2025-02-05 10:24:14,326 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 47 SyntacticMatches, 7 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2025-02-05 10:24:14,327 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 200 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 10:24:14,327 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 170 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 10:24:14,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2025-02-05 10:24:14,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 143. [2025-02-05 10:24:14,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 119 states have (on average 1.2941176470588236) internal successors, (154), 119 states have internal predecessors, (154), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-02-05 10:24:14,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 186 transitions. [2025-02-05 10:24:14,351 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 186 transitions. Word has length 30 [2025-02-05 10:24:14,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:24:14,351 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 186 transitions. [2025-02-05 10:24:14,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-05 10:24:14,352 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 186 transitions. [2025-02-05 10:24:14,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-02-05 10:24:14,352 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:24:14,352 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:24:14,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-05 10:24:14,553 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,SelfDestructingSolverStorable13 [2025-02-05 10:24:14,554 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:24:14,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:24:14,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1382001153, now seen corresponding path program 9 times [2025-02-05 10:24:14,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:24:14,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101159898] [2025-02-05 10:24:14,554 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:24:14,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:24:14,582 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 4 equivalence classes. [2025-02-05 10:24:14,615 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 31 of 31 statements. [2025-02-05 10:24:14,615 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-05 10:24:14,615 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 10:24:14,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1846105958] [2025-02-05 10:24:14,621 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:24:14,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:24:14,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:24:14,625 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) [2025-02-05 10:24:14,626 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 [2025-02-05 10:24:14,744 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 4 equivalence classes. [2025-02-05 10:24:14,801 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 31 of 31 statements. [2025-02-05 10:24:14,801 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-05 10:24:14,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:24:14,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 67 conjuncts are in the unsatisfiable core [2025-02-05 10:24:14,806 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:24:14,837 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 [2025-02-05 10:24:14,842 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 [2025-02-05 10:24:14,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-05 10:24:14,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-05 10:24:14,918 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:24:14,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2025-02-05 10:24:14,933 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:24:14,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2025-02-05 10:24:14,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:24:14,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:24:14,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:24:15,000 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:24:15,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 40 [2025-02-05 10:24:15,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:24:15,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:24:15,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:24:15,018 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:24:15,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 40 [2025-02-05 10:24:15,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:24:15,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:24:15,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:24:15,668 INFO L349 Elim1Store]: treesize reduction 174, result has 36.3 percent of original size [2025-02-05 10:24:15,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 78 treesize of output 132 [2025-02-05 10:24:15,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:24:15,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:24:15,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:24:15,780 INFO L349 Elim1Store]: treesize reduction 190, result has 34.3 percent of original size [2025-02-05 10:24:15,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 78 treesize of output 134 [2025-02-05 10:24:17,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:24:17,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:24:17,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:24:17,481 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:24:17,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 345 treesize of output 293 [2025-02-05 10:24:17,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:24:17,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:24:17,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:24:17,526 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:24:17,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 276 treesize of output 204 [2025-02-05 10:24:19,055 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:24:19,055 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:24:20,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:24:20,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101159898] [2025-02-05 10:24:20,570 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-05 10:24:20,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846105958] [2025-02-05 10:24:20,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846105958] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:24:20,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-05 10:24:20,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2025-02-05 10:24:20,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634767266] [2025-02-05 10:24:20,571 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-05 10:24:20,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-05 10:24:20,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:24:20,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-05 10:24:20,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=586, Unknown=0, NotChecked=0, Total=702 [2025-02-05 10:24:20,572 INFO L87 Difference]: Start difference. First operand 143 states and 186 transitions. Second operand has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 17 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-05 10:24:21,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:24:21,147 INFO L93 Difference]: Finished difference Result 167 states and 215 transitions. [2025-02-05 10:24:21,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-05 10:24:21,147 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 17 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2025-02-05 10:24:21,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:24:21,148 INFO L225 Difference]: With dead ends: 167 [2025-02-05 10:24:21,148 INFO L226 Difference]: Without dead ends: 164 [2025-02-05 10:24:21,149 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=133, Invalid=679, Unknown=0, NotChecked=0, Total=812 [2025-02-05 10:24:21,149 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 16 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-05 10:24:21,149 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 227 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-05 10:24:21,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2025-02-05 10:24:21,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 148. [2025-02-05 10:24:21,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 124 states have (on average 1.2903225806451613) internal successors, (160), 124 states have internal predecessors, (160), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-02-05 10:24:21,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 192 transitions. [2025-02-05 10:24:21,176 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 192 transitions. Word has length 31 [2025-02-05 10:24:21,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:24:21,176 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 192 transitions. [2025-02-05 10:24:21,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 17 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-05 10:24:21,177 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 192 transitions. [2025-02-05 10:24:21,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-02-05 10:24:21,177 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:24:21,177 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:24:21,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-05 10:24:21,377 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,SelfDestructingSolverStorable14 [2025-02-05 10:24:21,378 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:24:21,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:24:21,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1252918434, now seen corresponding path program 3 times [2025-02-05 10:24:21,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:24:21,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396670507] [2025-02-05 10:24:21,378 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:24:21,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:24:21,386 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 4 equivalence classes. [2025-02-05 10:24:21,457 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 31 of 31 statements. [2025-02-05 10:24:21,461 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-05 10:24:21,462 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 10:24:21,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1399007780] [2025-02-05 10:24:21,463 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:24:21,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:24:21,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:24:21,466 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) [2025-02-05 10:24:21,468 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 [2025-02-05 10:24:21,522 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 4 equivalence classes. [2025-02-05 10:24:21,555 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 31 of 31 statements. [2025-02-05 10:24:21,555 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-05 10:24:21,555 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:24:21,557 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 78 conjuncts are in the unsatisfiable core [2025-02-05 10:24:21,559 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:24:21,594 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 [2025-02-05 10:24:21,604 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 [2025-02-05 10:24:21,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-05 10:24:21,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-05 10:24:21,675 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:24:21,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2025-02-05 10:24:21,686 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:24:21,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2025-02-05 10:24:21,751 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:24:21,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2025-02-05 10:24:21,771 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:24:21,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2025-02-05 10:24:22,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:24:22,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:24:22,134 INFO L349 Elim1Store]: treesize reduction 36, result has 46.3 percent of original size [2025-02-05 10:24:22,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 46 treesize of output 72 [2025-02-05 10:24:22,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:24:22,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:24:22,166 INFO L349 Elim1Store]: treesize reduction 32, result has 49.2 percent of original size [2025-02-05 10:24:22,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 46 treesize of output 70 [2025-02-05 10:24:23,134 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:24:23,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 163 treesize of output 161 [2025-02-05 10:24:23,164 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:24:23,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 128 treesize of output 130 [2025-02-05 10:24:23,484 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:24:23,484 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:24:23,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:24:23,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396670507] [2025-02-05 10:24:23,760 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-05 10:24:23,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399007780] [2025-02-05 10:24:23,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399007780] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:24:23,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-05 10:24:23,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2025-02-05 10:24:23,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810501163] [2025-02-05 10:24:23,761 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-05 10:24:23,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-05 10:24:23,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:24:23,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-05 10:24:23,762 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2025-02-05 10:24:23,762 INFO L87 Difference]: Start difference. First operand 148 states and 192 transitions. Second operand has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-05 10:24:24,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:24:24,345 INFO L93 Difference]: Finished difference Result 177 states and 227 transitions. [2025-02-05 10:24:24,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-05 10:24:24,347 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2025-02-05 10:24:24,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:24:24,348 INFO L225 Difference]: With dead ends: 177 [2025-02-05 10:24:24,348 INFO L226 Difference]: Without dead ends: 166 [2025-02-05 10:24:24,349 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=172, Invalid=950, Unknown=0, NotChecked=0, Total=1122 [2025-02-05 10:24:24,349 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 30 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 10:24:24,349 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 201 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 10:24:24,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2025-02-05 10:24:24,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 159. [2025-02-05 10:24:24,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 133 states have (on average 1.2857142857142858) internal successors, (171), 133 states have internal predecessors, (171), 17 states have call successors, (17), 8 states have call predecessors, (17), 8 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-02-05 10:24:24,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 205 transitions. [2025-02-05 10:24:24,383 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 205 transitions. Word has length 31 [2025-02-05 10:24:24,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:24:24,383 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 205 transitions. [2025-02-05 10:24:24,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-05 10:24:24,383 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 205 transitions. [2025-02-05 10:24:24,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-02-05 10:24:24,384 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:24:24,384 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:24:24,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-05 10:24:24,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:24:24,584 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:24:24,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:24:24,585 INFO L85 PathProgramCache]: Analyzing trace with hash 107668970, now seen corresponding path program 10 times [2025-02-05 10:24:24,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:24:24,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802776982] [2025-02-05 10:24:24,585 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:24:24,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:24:24,593 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 32 statements into 2 equivalence classes. [2025-02-05 10:24:24,615 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-02-05 10:24:24,615 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 10:24:24,616 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:24:24,747 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 10:24:24,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:24:24,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802776982] [2025-02-05 10:24:24,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802776982] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:24:24,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703367806] [2025-02-05 10:24:24,748 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:24:24,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:24:24,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:24:24,749 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) [2025-02-05 10:24:24,751 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 [2025-02-05 10:24:24,800 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 32 statements into 2 equivalence classes. [2025-02-05 10:24:24,832 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-02-05 10:24:24,832 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 10:24:24,832 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:24:24,833 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-05 10:24:24,834 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:24:24,925 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:24:24,925 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:24:24,988 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 10:24:24,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703367806] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:24:24,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:24:24,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2025-02-05 10:24:24,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395941202] [2025-02-05 10:24:24,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:24:24,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-05 10:24:24,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:24:24,989 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-05 10:24:24,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2025-02-05 10:24:24,990 INFO L87 Difference]: Start difference. First operand 159 states and 205 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-05 10:24:25,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:24:25,347 INFO L93 Difference]: Finished difference Result 390 states and 514 transitions. [2025-02-05 10:24:25,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-05 10:24:25,348 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2025-02-05 10:24:25,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:24:25,350 INFO L225 Difference]: With dead ends: 390 [2025-02-05 10:24:25,350 INFO L226 Difference]: Without dead ends: 286 [2025-02-05 10:24:25,351 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 49 SyntacticMatches, 9 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=228, Invalid=584, Unknown=0, NotChecked=0, Total=812 [2025-02-05 10:24:25,351 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 347 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 10:24:25,351 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 168 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 10:24:25,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2025-02-05 10:24:25,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 216. [2025-02-05 10:24:25,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 181 states have (on average 1.3093922651933703) internal successors, (237), 181 states have internal predecessors, (237), 25 states have call successors, (25), 9 states have call predecessors, (25), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2025-02-05 10:24:25,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 287 transitions. [2025-02-05 10:24:25,397 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 287 transitions. Word has length 32 [2025-02-05 10:24:25,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:24:25,397 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 287 transitions. [2025-02-05 10:24:25,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-05 10:24:25,397 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 287 transitions. [2025-02-05 10:24:25,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-02-05 10:24:25,398 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:24:25,398 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:24:25,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-05 10:24:25,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-02-05 10:24:25,598 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:24:25,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:24:25,599 INFO L85 PathProgramCache]: Analyzing trace with hash 76708984, now seen corresponding path program 4 times [2025-02-05 10:24:25,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:24:25,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760842383] [2025-02-05 10:24:25,599 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:24:25,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:24:25,604 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 32 statements into 2 equivalence classes. [2025-02-05 10:24:25,617 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-02-05 10:24:25,617 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 10:24:25,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:24:25,757 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 10:24:25,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:24:25,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760842383] [2025-02-05 10:24:25,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760842383] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:24:25,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285114572] [2025-02-05 10:24:25,757 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:24:25,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:24:25,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:24:25,760 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) [2025-02-05 10:24:25,761 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 [2025-02-05 10:24:25,812 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 32 statements into 2 equivalence classes. [2025-02-05 10:24:25,880 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-02-05 10:24:25,880 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 10:24:25,880 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:24:25,882 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-05 10:24:25,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:24:25,948 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:24:25,949 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:24:26,020 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 10:24:26,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285114572] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:24:26,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:24:26,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2025-02-05 10:24:26,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984814252] [2025-02-05 10:24:26,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:24:26,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-05 10:24:26,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:24:26,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-05 10:24:26,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2025-02-05 10:24:26,021 INFO L87 Difference]: Start difference. First operand 216 states and 287 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-05 10:24:26,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:24:26,394 INFO L93 Difference]: Finished difference Result 249 states and 320 transitions. [2025-02-05 10:24:26,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-05 10:24:26,394 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2025-02-05 10:24:26,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:24:26,395 INFO L225 Difference]: With dead ends: 249 [2025-02-05 10:24:26,395 INFO L226 Difference]: Without dead ends: 246 [2025-02-05 10:24:26,396 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 48 SyntacticMatches, 10 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2025-02-05 10:24:26,396 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 101 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 10:24:26,396 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 249 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 10:24:26,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2025-02-05 10:24:26,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 207. [2025-02-05 10:24:26,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 172 states have (on average 1.308139534883721) internal successors, (225), 173 states have internal predecessors, (225), 25 states have call successors, (25), 9 states have call predecessors, (25), 9 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2025-02-05 10:24:26,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 275 transitions. [2025-02-05 10:24:26,434 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 275 transitions. Word has length 32 [2025-02-05 10:24:26,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:24:26,434 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 275 transitions. [2025-02-05 10:24:26,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-05 10:24:26,435 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 275 transitions. [2025-02-05 10:24:26,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-02-05 10:24:26,435 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:24:26,435 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:24:26,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-05 10:24:26,636 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,SelfDestructingSolverStorable17 [2025-02-05 10:24:26,636 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:24:26,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:24:26,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1623554032, now seen corresponding path program 11 times [2025-02-05 10:24:26,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:24:26,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121647605] [2025-02-05 10:24:26,636 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:24:26,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:24:26,642 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 33 statements into 5 equivalence classes. [2025-02-05 10:24:26,671 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 33 of 33 statements. [2025-02-05 10:24:26,671 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-02-05 10:24:26,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 10:24:26,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [606973073] [2025-02-05 10:24:26,673 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:24:26,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:24:26,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:24:26,675 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) [2025-02-05 10:24:26,677 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 [2025-02-05 10:24:26,742 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 33 statements into 5 equivalence classes. [2025-02-05 10:24:26,800 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 33 of 33 statements. [2025-02-05 10:24:26,801 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-02-05 10:24:26,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:24:26,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 75 conjuncts are in the unsatisfiable core [2025-02-05 10:24:26,806 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:24:26,837 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 [2025-02-05 10:24:26,841 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 [2025-02-05 10:24:26,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-05 10:24:26,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-05 10:24:26,929 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:24:26,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2025-02-05 10:24:26,942 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:24:26,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2025-02-05 10:24:26,994 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:24:26,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2025-02-05 10:24:27,014 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:24:27,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2025-02-05 10:24:27,085 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:24:27,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2025-02-05 10:24:27,102 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:24:27,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2025-02-05 10:24:27,662 INFO L349 Elim1Store]: treesize reduction 220, result has 33.5 percent of original size [2025-02-05 10:24:27,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 10 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 84 treesize of output 152 [2025-02-05 10:24:27,785 INFO L349 Elim1Store]: treesize reduction 200, result has 35.7 percent of original size [2025-02-05 10:24:27,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 10 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 84 treesize of output 150 [2025-02-05 10:24:30,506 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:24:30,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 438 treesize of output 352 [2025-02-05 10:24:30,541 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:24:30,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 317 treesize of output 239 [2025-02-05 10:24:32,982 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:24:32,982 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:24:59,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:24:59,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121647605] [2025-02-05 10:24:59,799 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-05 10:24:59,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606973073] [2025-02-05 10:24:59,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606973073] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:24:59,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-05 10:24:59,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2025-02-05 10:24:59,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95259994] [2025-02-05 10:24:59,799 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-05 10:24:59,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-05 10:24:59,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:24:59,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-05 10:24:59,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=738, Unknown=3, NotChecked=0, Total=870 [2025-02-05 10:24:59,800 INFO L87 Difference]: Start difference. First operand 207 states and 275 transitions. Second operand has 21 states, 21 states have (on average 1.380952380952381) internal successors, (29), 19 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-05 10:25:00,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:25:00,228 INFO L93 Difference]: Finished difference Result 233 states and 305 transitions. [2025-02-05 10:25:00,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-05 10:25:00,229 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.380952380952381) internal successors, (29), 19 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2025-02-05 10:25:00,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:25:00,230 INFO L225 Difference]: With dead ends: 233 [2025-02-05 10:25:00,230 INFO L226 Difference]: Without dead ends: 230 [2025-02-05 10:25:00,231 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 27.9s TimeCoverageRelationStatistics Valid=129, Invalid=738, Unknown=3, NotChecked=0, Total=870 [2025-02-05 10:25:00,231 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 18 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 10:25:00,231 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 201 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 10:25:00,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2025-02-05 10:25:00,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 213. [2025-02-05 10:25:00,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 178 states have (on average 1.3089887640449438) internal successors, (233), 178 states have internal predecessors, (233), 25 states have call successors, (25), 9 states have call predecessors, (25), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2025-02-05 10:25:00,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 283 transitions. [2025-02-05 10:25:00,279 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 283 transitions. Word has length 33 [2025-02-05 10:25:00,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:25:00,279 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 283 transitions. [2025-02-05 10:25:00,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.380952380952381) internal successors, (29), 19 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-05 10:25:00,279 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 283 transitions. [2025-02-05 10:25:00,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-02-05 10:25:00,280 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:25:00,280 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:25:00,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-02-05 10:25:00,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:00,481 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:25:00,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:25:00,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1916957039, now seen corresponding path program 5 times [2025-02-05 10:25:00,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:25:00,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702769742] [2025-02-05 10:25:00,481 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:25:00,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:25:00,486 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 33 statements into 5 equivalence classes. [2025-02-05 10:25:00,538 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 33 of 33 statements. [2025-02-05 10:25:00,538 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-02-05 10:25:00,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 10:25:00,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1958657992] [2025-02-05 10:25:00,540 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:25:00,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:00,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:25:00,542 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) [2025-02-05 10:25:00,544 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 [2025-02-05 10:25:00,614 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 33 statements into 5 equivalence classes. [2025-02-05 10:25:00,690 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 33 of 33 statements. [2025-02-05 10:25:00,690 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-02-05 10:25:00,690 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:00,697 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 85 conjuncts are in the unsatisfiable core [2025-02-05 10:25:00,701 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:25:00,743 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 [2025-02-05 10:25:00,754 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 [2025-02-05 10:25:00,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-05 10:25:00,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-05 10:25:00,831 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:25:00,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2025-02-05 10:25:00,850 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:25:00,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2025-02-05 10:25:00,910 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:25:00,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2025-02-05 10:25:00,921 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:25:00,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2025-02-05 10:25:00,983 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:25:00,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2025-02-05 10:25:00,997 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:25:00,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2025-02-05 10:25:01,647 INFO L349 Elim1Store]: treesize reduction 200, result has 35.7 percent of original size [2025-02-05 10:25:01,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 10 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 84 treesize of output 150 [2025-02-05 10:25:01,796 INFO L349 Elim1Store]: treesize reduction 220, result has 33.5 percent of original size [2025-02-05 10:25:01,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 10 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 84 treesize of output 152 [2025-02-05 10:25:04,359 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:25:04,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 424 treesize of output 334 [2025-02-05 10:25:04,407 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:25:04,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 297 treesize of output 231 [2025-02-05 10:25:07,803 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:07,804 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:25:08,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:25:08,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702769742] [2025-02-05 10:25:08,408 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-05 10:25:08,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958657992] [2025-02-05 10:25:08,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958657992] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:25:08,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-05 10:25:08,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2025-02-05 10:25:08,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422910253] [2025-02-05 10:25:08,409 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-05 10:25:08,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-05 10:25:08,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:25:08,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-05 10:25:08,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=915, Unknown=0, NotChecked=0, Total=1056 [2025-02-05 10:25:08,410 INFO L87 Difference]: Start difference. First operand 213 states and 283 transitions. Second operand has 24 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 21 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-05 10:25:10,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:25:10,285 INFO L93 Difference]: Finished difference Result 237 states and 310 transitions. [2025-02-05 10:25:10,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-02-05 10:25:10,285 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 21 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2025-02-05 10:25:10,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:25:10,287 INFO L225 Difference]: With dead ends: 237 [2025-02-05 10:25:10,287 INFO L226 Difference]: Without dead ends: 234 [2025-02-05 10:25:10,287 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=270, Invalid=1710, Unknown=0, NotChecked=0, Total=1980 [2025-02-05 10:25:10,288 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 45 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-05 10:25:10,288 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 261 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-05 10:25:10,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2025-02-05 10:25:10,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 213. [2025-02-05 10:25:10,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 178 states have (on average 1.3089887640449438) internal successors, (233), 178 states have internal predecessors, (233), 25 states have call successors, (25), 9 states have call predecessors, (25), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2025-02-05 10:25:10,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 283 transitions. [2025-02-05 10:25:10,333 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 283 transitions. Word has length 33 [2025-02-05 10:25:10,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:25:10,333 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 283 transitions. [2025-02-05 10:25:10,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 21 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-05 10:25:10,334 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 283 transitions. [2025-02-05 10:25:10,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-02-05 10:25:10,334 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:25:10,334 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:25:10,340 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-05 10:25:10,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:10,535 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:25:10,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:25:10,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1209464313, now seen corresponding path program 12 times [2025-02-05 10:25:10,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:25:10,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355853466] [2025-02-05 10:25:10,535 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:25:10,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:25:10,543 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 34 statements into 5 equivalence classes. [2025-02-05 10:25:10,566 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 34 of 34 statements. [2025-02-05 10:25:10,566 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-02-05 10:25:10,566 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:10,762 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 10:25:10,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:25:10,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355853466] [2025-02-05 10:25:10,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355853466] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:25:10,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22158843] [2025-02-05 10:25:10,763 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:25:10,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:10,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:25:10,765 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) [2025-02-05 10:25:10,768 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 [2025-02-05 10:25:10,834 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 34 statements into 5 equivalence classes. [2025-02-05 10:25:10,875 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 34 of 34 statements. [2025-02-05 10:25:10,875 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-02-05 10:25:10,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:10,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-05 10:25:10,878 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:25:11,023 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 25 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:25:11,024 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:25:11,118 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 10:25:11,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22158843] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:25:11,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:25:11,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2025-02-05 10:25:11,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083461152] [2025-02-05 10:25:11,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:25:11,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-05 10:25:11,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:25:11,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-05 10:25:11,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2025-02-05 10:25:11,120 INFO L87 Difference]: Start difference. First operand 213 states and 283 transitions. Second operand has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-05 10:25:11,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:25:11,788 INFO L93 Difference]: Finished difference Result 578 states and 773 transitions. [2025-02-05 10:25:11,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-02-05 10:25:11,789 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2025-02-05 10:25:11,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:25:11,791 INFO L225 Difference]: With dead ends: 578 [2025-02-05 10:25:11,791 INFO L226 Difference]: Without dead ends: 414 [2025-02-05 10:25:11,792 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 49 SyntacticMatches, 11 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=381, Invalid=1101, Unknown=0, NotChecked=0, Total=1482 [2025-02-05 10:25:11,792 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 583 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 10:25:11,792 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [589 Valid, 202 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 10:25:11,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2025-02-05 10:25:11,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 291. [2025-02-05 10:25:11,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 243 states have (on average 1.3209876543209877) internal successors, (321), 243 states have internal predecessors, (321), 36 states have call successors, (36), 11 states have call predecessors, (36), 11 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2025-02-05 10:25:11,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 393 transitions. [2025-02-05 10:25:11,849 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 393 transitions. Word has length 34 [2025-02-05 10:25:11,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:25:11,849 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 393 transitions. [2025-02-05 10:25:11,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-05 10:25:11,849 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 393 transitions. [2025-02-05 10:25:11,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-02-05 10:25:11,850 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:25:11,850 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:25:11,863 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 [2025-02-05 10:25:12,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:12,051 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:25:12,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:25:12,051 INFO L85 PathProgramCache]: Analyzing trace with hash -343497057, now seen corresponding path program 13 times [2025-02-05 10:25:12,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:25:12,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679622718] [2025-02-05 10:25:12,052 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 10:25:12,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:25:12,058 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-05 10:25:12,077 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-05 10:25:12,077 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:25:12,077 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 10:25:12,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [660515692] [2025-02-05 10:25:12,079 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 10:25:12,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:25:12,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:25:12,081 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) [2025-02-05 10:25:12,084 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 [2025-02-05 10:25:12,157 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-05 10:25:12,191 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-05 10:25:12,191 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:25:12,191 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:25:12,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 84 conjuncts are in the unsatisfiable core [2025-02-05 10:25:12,196 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:25:12,219 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 [2025-02-05 10:25:12,225 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 [2025-02-05 10:25:12,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-05 10:25:12,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-05 10:25:12,294 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:25:12,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2025-02-05 10:25:12,308 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:25:12,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2025-02-05 10:25:12,351 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:25:12,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2025-02-05 10:25:12,367 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:25:12,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2025-02-05 10:25:12,412 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:25:12,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2025-02-05 10:25:12,430 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:25:12,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2025-02-05 10:25:12,499 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:25:12,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 58 [2025-02-05 10:25:12,518 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:25:12,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 58 [2025-02-05 10:25:13,297 INFO L349 Elim1Store]: treesize reduction 240, result has 35.7 percent of original size [2025-02-05 10:25:13,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 15 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 78 case distinctions, treesize of input 98 treesize of output 178 [2025-02-05 10:25:13,504 INFO L349 Elim1Store]: treesize reduction 264, result has 33.5 percent of original size [2025-02-05 10:25:13,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 15 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 78 case distinctions, treesize of input 98 treesize of output 180