./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_unwindbound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_unwindbound100.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 ac7d6bbeae1af74610eb5ea0ec9cc56676532539c7535ebfdf72e0c17174815d --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 03:20:00,424 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 03:20:00,499 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 03:20:00,504 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 03:20:00,507 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 03:20:00,534 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 03:20:00,535 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 03:20:00,535 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 03:20:00,536 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 03:20:00,536 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 03:20:00,537 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 03:20:00,537 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 03:20:00,537 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 03:20:00,537 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 03:20:00,538 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 03:20:00,538 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 03:20:00,538 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 03:20:00,538 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 03:20:00,538 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 03:20:00,538 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 03:20:00,538 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 03:20:00,538 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 03:20:00,538 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 03:20:00,539 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 03:20:00,539 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 03:20:00,539 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 03:20:00,539 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 03:20:00,539 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 03:20:00,539 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 03:20:00,539 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 03:20:00,539 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 03:20:00,539 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 03:20:00,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:20:00,540 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 03:20:00,540 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 03:20:00,540 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 03:20:00,540 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 03:20:00,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:20:00,540 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 03:20:00,540 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 03:20:00,541 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 03:20:00,541 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 03:20:00,541 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 03:20:00,541 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 03:20:00,541 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 03:20:00,541 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 03:20:00,541 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 03:20:00,542 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 03:20:00,542 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 -> ac7d6bbeae1af74610eb5ea0ec9cc56676532539c7535ebfdf72e0c17174815d [2025-01-09 03:20:00,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 03:20:00,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 03:20:00,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 03:20:00,835 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 03:20:00,835 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 03:20:00,836 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_unwindbound100.c [2025-01-09 03:20:02,079 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5d34c0623/362edcc9922f4b2cbcfcca4cb1cd43a1/FLAGc456274c3 [2025-01-09 03:20:02,367 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 03:20:02,367 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_unwindbound100.c [2025-01-09 03:20:02,378 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5d34c0623/362edcc9922f4b2cbcfcca4cb1cd43a1/FLAGc456274c3 [2025-01-09 03:20:02,398 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5d34c0623/362edcc9922f4b2cbcfcca4cb1cd43a1 [2025-01-09 03:20:02,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 03:20:02,402 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 03:20:02,403 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 03:20:02,403 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 03:20:02,407 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 03:20:02,408 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 03:20:02" (1/1) ... [2025-01-09 03:20:02,409 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2654e01f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:20:02, skipping insertion in model container [2025-01-09 03:20:02,409 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 03:20:02" (1/1) ... [2025-01-09 03:20:02,422 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 03:20:02,546 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/nla-digbench-scaling/fermat1-ll_unwindbound100.c[535,548] [2025-01-09 03:20:02,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 03:20:02,576 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 03:20:02,586 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/nla-digbench-scaling/fermat1-ll_unwindbound100.c[535,548] [2025-01-09 03:20:02,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 03:20:02,607 INFO L204 MainTranslator]: Completed translation [2025-01-09 03:20:02,609 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:20:02 WrapperNode [2025-01-09 03:20:02,610 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 03:20:02,610 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 03:20:02,611 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 03:20:02,611 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 03:20:02,616 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:20:02" (1/1) ... [2025-01-09 03:20:02,623 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:20:02" (1/1) ... [2025-01-09 03:20:02,638 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 65 [2025-01-09 03:20:02,639 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 03:20:02,640 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 03:20:02,640 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 03:20:02,640 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 03:20:02,647 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:20:02" (1/1) ... [2025-01-09 03:20:02,647 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:20:02" (1/1) ... [2025-01-09 03:20:02,649 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:20:02" (1/1) ... [2025-01-09 03:20:02,668 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-01-09 03:20:02,669 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:20:02" (1/1) ... [2025-01-09 03:20:02,669 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:20:02" (1/1) ... [2025-01-09 03:20:02,671 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:20:02" (1/1) ... [2025-01-09 03:20:02,671 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:20:02" (1/1) ... [2025-01-09 03:20:02,675 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:20:02" (1/1) ... [2025-01-09 03:20:02,678 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:20:02" (1/1) ... [2025-01-09 03:20:02,679 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:20:02" (1/1) ... [2025-01-09 03:20:02,680 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 03:20:02,681 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 03:20:02,681 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 03:20:02,681 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 03:20:02,682 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:20:02" (1/1) ... [2025-01-09 03:20:02,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:20:02,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:20:02,709 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 03:20:02,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 03:20:02,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 03:20:02,730 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 03:20:02,731 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 03:20:02,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 03:20:02,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 03:20:02,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 03:20:02,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-01-09 03:20:02,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-01-09 03:20:02,782 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 03:20:02,784 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 03:20:02,898 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2025-01-09 03:20:02,899 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 03:20:02,905 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 03:20:02,906 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2025-01-09 03:20:02,906 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:20:02 BoogieIcfgContainer [2025-01-09 03:20:02,906 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 03:20:02,908 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 03:20:02,908 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 03:20:02,912 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 03:20:02,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 03:20:02" (1/3) ... [2025-01-09 03:20:02,913 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192f3bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 03:20:02, skipping insertion in model container [2025-01-09 03:20:02,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:20:02" (2/3) ... [2025-01-09 03:20:02,913 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192f3bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 03:20:02, skipping insertion in model container [2025-01-09 03:20:02,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:20:02" (3/3) ... [2025-01-09 03:20:02,914 INFO L128 eAbstractionObserver]: Analyzing ICFG fermat1-ll_unwindbound100.c [2025-01-09 03:20:02,925 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 03:20:02,926 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fermat1-ll_unwindbound100.c that has 3 procedures, 32 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-01-09 03:20:02,969 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 03:20:02,981 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;@495c3437, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 03:20:02,981 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 03:20:02,984 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-09 03:20:02,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-01-09 03:20:02,988 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:20:02,988 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:20:02,988 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:20:02,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:20:02,993 INFO L85 PathProgramCache]: Analyzing trace with hash 738208203, now seen corresponding path program 1 times [2025-01-09 03:20:03,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:20:03,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760534750] [2025-01-09 03:20:03,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:20:03,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:20:03,057 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-09 03:20:03,070 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 03:20:03,071 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:20:03,071 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:20:03,124 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:20:03,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:20:03,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760534750] [2025-01-09 03:20:03,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760534750] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:20:03,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014193759] [2025-01-09 03:20:03,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:20:03,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:20:03,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:20:03,129 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:20:03,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 03:20:03,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-09 03:20:03,200 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 03:20:03,201 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:20:03,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:20:03,202 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 03:20:03,206 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:20:03,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:20:03,217 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 03:20:03,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014193759] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:20:03,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 03:20:03,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 03:20:03,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308743582] [2025-01-09 03:20:03,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:20:03,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 03:20:03,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:20:03,240 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 03:20:03,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 03:20:03,243 INFO L87 Difference]: Start difference. First operand has 32 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-09 03:20:03,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:20:03,260 INFO L93 Difference]: Finished difference Result 61 states and 94 transitions. [2025-01-09 03:20:03,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 03:20:03,263 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2025-01-09 03:20:03,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:20:03,268 INFO L225 Difference]: With dead ends: 61 [2025-01-09 03:20:03,269 INFO L226 Difference]: Without dead ends: 28 [2025-01-09 03:20:03,272 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 03:20:03,275 INFO L435 NwaCegarLoop]: 41 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, 41 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:20:03,277 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:20:03,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2025-01-09 03:20:03,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2025-01-09 03:20:03,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-01-09 03:20:03,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2025-01-09 03:20:03,310 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 18 [2025-01-09 03:20:03,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:20:03,311 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2025-01-09 03:20:03,312 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-09 03:20:03,312 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2025-01-09 03:20:03,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-01-09 03:20:03,313 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:20:03,314 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:20:03,322 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 [2025-01-09 03:20:03,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-01-09 03:20:03,515 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:20:03,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:20:03,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1800491340, now seen corresponding path program 1 times [2025-01-09 03:20:03,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:20:03,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022659159] [2025-01-09 03:20:03,516 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:20:03,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:20:03,523 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-09 03:20:03,555 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 03:20:03,556 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:20:03,556 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 03:20:03,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2070060] [2025-01-09 03:20:03,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:20:03,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:20:03,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:20:03,561 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:20:03,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 03:20:03,600 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-09 03:20:03,621 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 03:20:03,621 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:20:03,621 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:20:03,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 03:20:03,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:20:03,874 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:20:03,875 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 03:20:03,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:20:03,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022659159] [2025-01-09 03:20:03,876 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 03:20:03,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070060] [2025-01-09 03:20:03,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070060] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:20:03,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:20:03,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 03:20:03,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334958815] [2025-01-09 03:20:03,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:20:03,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 03:20:03,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:20:03,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 03:20:03,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 03:20:03,891 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 03:20:05,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2025-01-09 03:20:05,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:20:05,494 INFO L93 Difference]: Finished difference Result 47 states and 64 transitions. [2025-01-09 03:20:05,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:20:05,495 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2025-01-09 03:20:05,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:20:05,496 INFO L225 Difference]: With dead ends: 47 [2025-01-09 03:20:05,496 INFO L226 Difference]: Without dead ends: 45 [2025-01-09 03:20:05,496 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 03:20:05,497 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 13 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-01-09 03:20:05,497 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 101 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-01-09 03:20:05,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2025-01-09 03:20:05,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2025-01-09 03:20:05,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 32 states have internal predecessors, (44), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-01-09 03:20:05,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 61 transitions. [2025-01-09 03:20:05,511 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 61 transitions. Word has length 19 [2025-01-09 03:20:05,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:20:05,511 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 61 transitions. [2025-01-09 03:20:05,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 03:20:05,512 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 61 transitions. [2025-01-09 03:20:05,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-01-09 03:20:05,512 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:20:05,513 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:20:05,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-09 03:20:05,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:20:05,717 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:20:05,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:20:05,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1798465552, now seen corresponding path program 1 times [2025-01-09 03:20:05,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:20:05,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898472373] [2025-01-09 03:20:05,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:20:05,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:20:05,723 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-09 03:20:05,739 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 03:20:05,739 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:20:05,739 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:20:05,844 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:20:05,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:20:05,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898472373] [2025-01-09 03:20:05,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898472373] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:20:05,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:20:05,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 03:20:05,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59922404] [2025-01-09 03:20:05,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:20:05,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 03:20:05,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:20:05,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 03:20:05,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:20:05,846 INFO L87 Difference]: Start difference. First operand 44 states and 61 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 03:20:05,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:20:05,879 INFO L93 Difference]: Finished difference Result 53 states and 70 transitions. [2025-01-09 03:20:05,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 03:20:05,880 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2025-01-09 03:20:05,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:20:05,881 INFO L225 Difference]: With dead ends: 53 [2025-01-09 03:20:05,881 INFO L226 Difference]: Without dead ends: 46 [2025-01-09 03:20:05,882 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 [2025-01-09 03:20:05,882 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 5 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:20:05,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 91 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:20:05,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2025-01-09 03:20:05,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2025-01-09 03:20:05,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 33 states have (on average 1.393939393939394) internal successors, (46), 34 states have internal predecessors, (46), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-01-09 03:20:05,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 63 transitions. [2025-01-09 03:20:05,898 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 63 transitions. Word has length 19 [2025-01-09 03:20:05,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:20:05,900 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 63 transitions. [2025-01-09 03:20:05,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 03:20:05,901 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 63 transitions. [2025-01-09 03:20:05,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-01-09 03:20:05,902 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:20:05,902 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] [2025-01-09 03:20:05,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 03:20:05,903 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:20:05,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:20:05,903 INFO L85 PathProgramCache]: Analyzing trace with hash 884762201, now seen corresponding path program 1 times [2025-01-09 03:20:05,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:20:05,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363996269] [2025-01-09 03:20:05,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:20:05,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:20:05,912 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-01-09 03:20:05,935 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-01-09 03:20:05,935 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:20:05,935 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:20:06,207 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:20:06,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:20:06,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363996269] [2025-01-09 03:20:06,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363996269] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:20:06,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840038697] [2025-01-09 03:20:06,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:20:06,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:20:06,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:20:06,210 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:20:06,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 03:20:06,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-01-09 03:20:06,258 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-01-09 03:20:06,258 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:20:06,258 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:20:06,259 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 03:20:06,261 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:20:06,337 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:20:06,338 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:20:06,485 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:20:06,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840038697] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:20:06,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:20:06,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 12 [2025-01-09 03:20:06,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315859031] [2025-01-09 03:20:06,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:20:06,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-09 03:20:06,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:20:06,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-09 03:20:06,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2025-01-09 03:20:06,488 INFO L87 Difference]: Start difference. First operand 46 states and 63 transitions. Second operand has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) [2025-01-09 03:20:06,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:20:06,601 INFO L93 Difference]: Finished difference Result 53 states and 69 transitions. [2025-01-09 03:20:06,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 03:20:06,602 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) Word has length 25 [2025-01-09 03:20:06,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:20:06,605 INFO L225 Difference]: With dead ends: 53 [2025-01-09 03:20:06,606 INFO L226 Difference]: Without dead ends: 48 [2025-01-09 03:20:06,606 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2025-01-09 03:20:06,607 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 16 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:20:06,607 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 133 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:20:06,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2025-01-09 03:20:06,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 32. [2025-01-09 03:20:06,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-01-09 03:20:06,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2025-01-09 03:20:06,625 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 25 [2025-01-09 03:20:06,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:20:06,626 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2025-01-09 03:20:06,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) [2025-01-09 03:20:06,626 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2025-01-09 03:20:06,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-01-09 03:20:06,627 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:20:06,627 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, 1, 1, 1, 1] [2025-01-09 03:20:06,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-09 03:20:06,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:20:06,830 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:20:06,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:20:06,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1887642954, now seen corresponding path program 1 times [2025-01-09 03:20:06,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:20:06,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560227385] [2025-01-09 03:20:06,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:20:06,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:20:06,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-01-09 03:20:06,841 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-01-09 03:20:06,842 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:20:06,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:20:06,911 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:20:06,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:20:06,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560227385] [2025-01-09 03:20:06,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560227385] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:20:06,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:20:06,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 03:20:06,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701364502] [2025-01-09 03:20:06,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:20:06,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 03:20:06,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:20:06,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 03:20:06,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-09 03:20:06,913 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 03:20:06,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:20:06,956 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2025-01-09 03:20:06,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:20:06,957 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2025-01-09 03:20:06,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:20:06,957 INFO L225 Difference]: With dead ends: 61 [2025-01-09 03:20:06,958 INFO L226 Difference]: Without dead ends: 40 [2025-01-09 03:20:06,958 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-09 03:20:06,959 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 12 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:20:06,959 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 91 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:20:06,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2025-01-09 03:20:06,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2025-01-09 03:20:06,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-09 03:20:06,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2025-01-09 03:20:06,971 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 31 [2025-01-09 03:20:06,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:20:06,972 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2025-01-09 03:20:06,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 03:20:06,972 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2025-01-09 03:20:06,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-01-09 03:20:06,973 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:20:06,973 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:20:06,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 03:20:06,974 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:20:06,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:20:06,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1075457857, now seen corresponding path program 1 times [2025-01-09 03:20:06,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:20:06,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883328892] [2025-01-09 03:20:06,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:20:06,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:20:06,981 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-01-09 03:20:06,991 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-01-09 03:20:06,991 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:20:06,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:20:07,074 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-09 03:20:07,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:20:07,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883328892] [2025-01-09 03:20:07,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883328892] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:20:07,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:20:07,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 03:20:07,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134081740] [2025-01-09 03:20:07,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:20:07,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 03:20:07,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:20:07,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 03:20:07,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-01-09 03:20:07,077 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-01-09 03:20:07,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:20:07,131 INFO L93 Difference]: Finished difference Result 70 states and 85 transitions. [2025-01-09 03:20:07,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 03:20:07,131 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 37 [2025-01-09 03:20:07,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:20:07,133 INFO L225 Difference]: With dead ends: 70 [2025-01-09 03:20:07,134 INFO L226 Difference]: Without dead ends: 49 [2025-01-09 03:20:07,134 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-01-09 03:20:07,135 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 23 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:20:07,136 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 95 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:20:07,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2025-01-09 03:20:07,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2025-01-09 03:20:07,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 35 states have internal predecessors, (41), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-01-09 03:20:07,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2025-01-09 03:20:07,150 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 37 [2025-01-09 03:20:07,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:20:07,150 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2025-01-09 03:20:07,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-01-09 03:20:07,152 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2025-01-09 03:20:07,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-01-09 03:20:07,153 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:20:07,153 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:20:07,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-09 03:20:07,153 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:20:07,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:20:07,153 INFO L85 PathProgramCache]: Analyzing trace with hash 674693734, now seen corresponding path program 1 times [2025-01-09 03:20:07,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:20:07,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518905751] [2025-01-09 03:20:07,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:20:07,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:20:07,164 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-01-09 03:20:07,171 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 03:20:07,172 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:20:07,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:20:07,249 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-09 03:20:07,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:20:07,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518905751] [2025-01-09 03:20:07,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518905751] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:20:07,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889785128] [2025-01-09 03:20:07,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:20:07,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:20:07,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:20:07,255 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:20:07,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 03:20:07,294 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-01-09 03:20:07,311 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 03:20:07,312 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:20:07,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:20:07,313 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 03:20:07,314 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:20:07,372 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:20:07,372 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:20:07,446 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-09 03:20:07,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889785128] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:20:07,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:20:07,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 10 [2025-01-09 03:20:07,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550104899] [2025-01-09 03:20:07,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:20:07,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 03:20:07,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:20:07,449 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 03:20:07,449 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2025-01-09 03:20:07,449 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 7 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2025-01-09 03:20:07,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:20:07,635 INFO L93 Difference]: Finished difference Result 125 states and 156 transitions. [2025-01-09 03:20:07,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-09 03:20:07,635 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 7 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 39 [2025-01-09 03:20:07,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:20:07,636 INFO L225 Difference]: With dead ends: 125 [2025-01-09 03:20:07,636 INFO L226 Difference]: Without dead ends: 104 [2025-01-09 03:20:07,637 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2025-01-09 03:20:07,637 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 64 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:20:07,637 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 141 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:20:07,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2025-01-09 03:20:07,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 91. [2025-01-09 03:20:07,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 67 states have (on average 1.2238805970149254) internal successors, (82), 68 states have internal predecessors, (82), 16 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2025-01-09 03:20:07,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 113 transitions. [2025-01-09 03:20:07,673 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 113 transitions. Word has length 39 [2025-01-09 03:20:07,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:20:07,673 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 113 transitions. [2025-01-09 03:20:07,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 7 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2025-01-09 03:20:07,673 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 113 transitions. [2025-01-09 03:20:07,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-01-09 03:20:07,674 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:20:07,674 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:20:07,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-09 03:20:07,875 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,SelfDestructingSolverStorable6 [2025-01-09 03:20:07,875 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:20:07,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:20:07,876 INFO L85 PathProgramCache]: Analyzing trace with hash -126912254, now seen corresponding path program 1 times [2025-01-09 03:20:07,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:20:07,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957993167] [2025-01-09 03:20:07,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:20:07,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:20:07,881 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-01-09 03:20:07,887 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-01-09 03:20:07,889 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:20:07,889 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:20:07,961 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-09 03:20:07,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:20:07,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957993167] [2025-01-09 03:20:07,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957993167] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:20:07,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:20:07,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 03:20:07,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535320620] [2025-01-09 03:20:07,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:20:07,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 03:20:07,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:20:07,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 03:20:07,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:20:07,963 INFO L87 Difference]: Start difference. First operand 91 states and 113 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-01-09 03:20:08,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:20:08,022 INFO L93 Difference]: Finished difference Result 154 states and 198 transitions. [2025-01-09 03:20:08,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 03:20:08,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 43 [2025-01-09 03:20:08,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:20:08,025 INFO L225 Difference]: With dead ends: 154 [2025-01-09 03:20:08,025 INFO L226 Difference]: Without dead ends: 115 [2025-01-09 03:20:08,026 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:20:08,026 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 20 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:20:08,026 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 87 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:20:08,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2025-01-09 03:20:08,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 105. [2025-01-09 03:20:08,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 78 states have (on average 1.2307692307692308) internal successors, (96), 79 states have internal predecessors, (96), 19 states have call successors, (19), 8 states have call predecessors, (19), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2025-01-09 03:20:08,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 133 transitions. [2025-01-09 03:20:08,064 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 133 transitions. Word has length 43 [2025-01-09 03:20:08,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:20:08,066 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 133 transitions. [2025-01-09 03:20:08,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-01-09 03:20:08,066 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 133 transitions. [2025-01-09 03:20:08,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-01-09 03:20:08,067 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:20:08,067 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:20:08,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-01-09 03:20:08,067 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:20:08,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:20:08,068 INFO L85 PathProgramCache]: Analyzing trace with hash -38739799, now seen corresponding path program 1 times [2025-01-09 03:20:08,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:20:08,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904852829] [2025-01-09 03:20:08,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:20:08,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:20:08,075 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-01-09 03:20:08,086 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-01-09 03:20:08,086 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:20:08,086 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:20:08,194 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-09 03:20:08,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:20:08,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904852829] [2025-01-09 03:20:08,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904852829] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:20:08,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422070964] [2025-01-09 03:20:08,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:20:08,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:20:08,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:20:08,197 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:20:08,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-09 03:20:08,232 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-01-09 03:20:08,249 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-01-09 03:20:08,250 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:20:08,250 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:20:08,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 03:20:08,252 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:20:08,314 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:20:08,314 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:20:08,423 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-09 03:20:08,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422070964] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:20:08,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:20:08,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 12 [2025-01-09 03:20:08,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252708378] [2025-01-09 03:20:08,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:20:08,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-09 03:20:08,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:20:08,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-09 03:20:08,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2025-01-09 03:20:08,426 INFO L87 Difference]: Start difference. First operand 105 states and 133 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 9 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2025-01-09 03:20:08,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:20:08,630 INFO L93 Difference]: Finished difference Result 215 states and 279 transitions. [2025-01-09 03:20:08,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-09 03:20:08,631 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 9 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 45 [2025-01-09 03:20:08,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:20:08,632 INFO L225 Difference]: With dead ends: 215 [2025-01-09 03:20:08,632 INFO L226 Difference]: Without dead ends: 168 [2025-01-09 03:20:08,634 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2025-01-09 03:20:08,635 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 75 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:20:08,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 162 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:20:08,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2025-01-09 03:20:08,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 149. [2025-01-09 03:20:08,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 111 states have (on average 1.2432432432432432) internal successors, (138), 112 states have internal predecessors, (138), 28 states have call successors, (28), 10 states have call predecessors, (28), 9 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2025-01-09 03:20:08,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 193 transitions. [2025-01-09 03:20:08,683 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 193 transitions. Word has length 45 [2025-01-09 03:20:08,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:20:08,684 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 193 transitions. [2025-01-09 03:20:08,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 9 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2025-01-09 03:20:08,684 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 193 transitions. [2025-01-09 03:20:08,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-01-09 03:20:08,688 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:20:08,688 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:20:08,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-09 03:20:08,892 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 [2025-01-09 03:20:08,892 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:20:08,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:20:08,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1239773548, now seen corresponding path program 1 times [2025-01-09 03:20:08,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:20:08,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892732025] [2025-01-09 03:20:08,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:20:08,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:20:08,897 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-01-09 03:20:08,913 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-01-09 03:20:08,914 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:20:08,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:20:09,028 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-01-09 03:20:09,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:20:09,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892732025] [2025-01-09 03:20:09,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892732025] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:20:09,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257560410] [2025-01-09 03:20:09,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:20:09,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:20:09,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:20:09,031 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:20:09,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-09 03:20:09,062 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-01-09 03:20:09,082 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-01-09 03:20:09,082 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:20:09,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:20:09,083 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-09 03:20:09,085 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:20:09,155 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:20:09,155 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:20:09,277 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-01-09 03:20:09,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257560410] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:20:09,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:20:09,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 14 [2025-01-09 03:20:09,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697998856] [2025-01-09 03:20:09,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:20:09,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 03:20:09,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:20:09,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 03:20:09,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-01-09 03:20:09,280 INFO L87 Difference]: Start difference. First operand 149 states and 193 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 11 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2025-01-09 03:20:09,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:20:09,563 INFO L93 Difference]: Finished difference Result 207 states and 274 transitions. [2025-01-09 03:20:09,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-09 03:20:09,564 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 11 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) Word has length 51 [2025-01-09 03:20:09,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:20:09,567 INFO L225 Difference]: With dead ends: 207 [2025-01-09 03:20:09,567 INFO L226 Difference]: Without dead ends: 202 [2025-01-09 03:20:09,568 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=130, Invalid=250, Unknown=0, NotChecked=0, Total=380 [2025-01-09 03:20:09,568 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 149 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:20:09,569 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 171 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:20:09,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2025-01-09 03:20:09,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 194. [2025-01-09 03:20:09,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 144 states have (on average 1.2361111111111112) internal successors, (178), 148 states have internal predecessors, (178), 38 states have call successors, (38), 12 states have call predecessors, (38), 11 states have return successors, (37), 33 states have call predecessors, (37), 37 states have call successors, (37) [2025-01-09 03:20:09,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 253 transitions. [2025-01-09 03:20:09,624 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 253 transitions. Word has length 51 [2025-01-09 03:20:09,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:20:09,625 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 253 transitions. [2025-01-09 03:20:09,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 11 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2025-01-09 03:20:09,625 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 253 transitions. [2025-01-09 03:20:09,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-01-09 03:20:09,626 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:20:09,627 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:20:09,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-09 03:20:09,827 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 [2025-01-09 03:20:09,828 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:20:09,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:20:09,828 INFO L85 PathProgramCache]: Analyzing trace with hash 777122842, now seen corresponding path program 1 times [2025-01-09 03:20:09,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:20:09,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722498652] [2025-01-09 03:20:09,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:20:09,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:20:09,835 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-01-09 03:20:09,847 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-01-09 03:20:09,851 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:20:09,851 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:20:10,124 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 24 proven. 40 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2025-01-09 03:20:10,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:20:10,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722498652] [2025-01-09 03:20:10,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722498652] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:20:10,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430927225] [2025-01-09 03:20:10,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:20:10,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:20:10,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:20:10,128 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:20:10,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-09 03:20:10,161 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-01-09 03:20:10,187 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-01-09 03:20:10,187 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:20:10,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:20:10,189 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-01-09 03:20:10,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:20:10,303 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 24 proven. 152 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:20:10,304 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:20:10,556 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 24 proven. 40 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2025-01-09 03:20:10,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430927225] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:20:10,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:20:10,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 22 [2025-01-09 03:20:10,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909576543] [2025-01-09 03:20:10,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:20:10,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-01-09 03:20:10,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:20:10,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-01-09 03:20:10,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=267, Unknown=0, NotChecked=0, Total=462 [2025-01-09 03:20:10,559 INFO L87 Difference]: Start difference. First operand 194 states and 253 transitions. Second operand has 22 states, 22 states have (on average 4.454545454545454) internal successors, (98), 22 states have internal predecessors, (98), 19 states have call successors, (31), 11 states have call predecessors, (31), 10 states have return successors, (30), 18 states have call predecessors, (30), 18 states have call successors, (30) [2025-01-09 03:20:11,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:20:11,279 INFO L93 Difference]: Finished difference Result 549 states and 749 transitions. [2025-01-09 03:20:11,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-01-09 03:20:11,280 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.454545454545454) internal successors, (98), 22 states have internal predecessors, (98), 19 states have call successors, (31), 11 states have call predecessors, (31), 10 states have return successors, (30), 18 states have call predecessors, (30), 18 states have call successors, (30) Word has length 87 [2025-01-09 03:20:11,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:20:11,284 INFO L225 Difference]: With dead ends: 549 [2025-01-09 03:20:11,287 INFO L226 Difference]: Without dead ends: 491 [2025-01-09 03:20:11,288 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=507, Invalid=899, Unknown=0, NotChecked=0, Total=1406 [2025-01-09 03:20:11,289 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 337 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 03:20:11,289 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 318 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 03:20:11,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2025-01-09 03:20:11,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 449. [2025-01-09 03:20:11,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 336 states have (on average 1.2470238095238095) internal successors, (419), 339 states have internal predecessors, (419), 93 states have call successors, (93), 20 states have call predecessors, (93), 19 states have return successors, (92), 89 states have call predecessors, (92), 92 states have call successors, (92) [2025-01-09 03:20:11,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 604 transitions. [2025-01-09 03:20:11,403 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 604 transitions. Word has length 87 [2025-01-09 03:20:11,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:20:11,404 INFO L471 AbstractCegarLoop]: Abstraction has 449 states and 604 transitions. [2025-01-09 03:20:11,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.454545454545454) internal successors, (98), 22 states have internal predecessors, (98), 19 states have call successors, (31), 11 states have call predecessors, (31), 10 states have return successors, (30), 18 states have call predecessors, (30), 18 states have call successors, (30) [2025-01-09 03:20:11,404 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 604 transitions. [2025-01-09 03:20:11,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-01-09 03:20:11,406 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:20:11,406 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 6, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:20:11,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-01-09 03:20:11,610 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 [2025-01-09 03:20:11,610 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:20:11,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:20:11,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1417240327, now seen corresponding path program 1 times [2025-01-09 03:20:11,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:20:11,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56477077] [2025-01-09 03:20:11,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:20:11,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:20:11,617 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-01-09 03:20:11,623 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-01-09 03:20:11,623 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:20:11,623 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:20:11,683 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2025-01-09 03:20:11,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:20:11,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56477077] [2025-01-09 03:20:11,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56477077] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:20:11,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:20:11,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 03:20:11,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444376679] [2025-01-09 03:20:11,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:20:11,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 03:20:11,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:20:11,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 03:20:11,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:20:11,685 INFO L87 Difference]: Start difference. First operand 449 states and 604 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 4 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2025-01-09 03:20:11,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:20:11,845 INFO L93 Difference]: Finished difference Result 809 states and 1107 transitions. [2025-01-09 03:20:11,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 03:20:11,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 4 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 93 [2025-01-09 03:20:11,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:20:11,849 INFO L225 Difference]: With dead ends: 809 [2025-01-09 03:20:11,849 INFO L226 Difference]: Without dead ends: 485 [2025-01-09 03:20:11,850 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:20:11,850 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 13 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:20:11,851 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 96 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:20:11,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2025-01-09 03:20:11,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 479. [2025-01-09 03:20:11,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 359 states have (on average 1.2311977715877438) internal successors, (442), 362 states have internal predecessors, (442), 100 states have call successors, (100), 20 states have call predecessors, (100), 19 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2025-01-09 03:20:11,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 641 transitions. [2025-01-09 03:20:11,982 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 641 transitions. Word has length 93 [2025-01-09 03:20:11,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:20:11,983 INFO L471 AbstractCegarLoop]: Abstraction has 479 states and 641 transitions. [2025-01-09 03:20:11,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 4 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2025-01-09 03:20:11,983 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 641 transitions. [2025-01-09 03:20:11,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-01-09 03:20:11,986 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:20:11,986 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:20:11,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-01-09 03:20:11,987 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:20:11,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:20:11,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1117881643, now seen corresponding path program 1 times [2025-01-09 03:20:11,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:20:11,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082570763] [2025-01-09 03:20:11,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:20:11,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:20:11,994 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-01-09 03:20:12,004 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-01-09 03:20:12,005 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:20:12,005 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:20:12,127 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 48 proven. 16 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2025-01-09 03:20:12,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:20:12,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082570763] [2025-01-09 03:20:12,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082570763] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:20:12,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130834676] [2025-01-09 03:20:12,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:20:12,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:20:12,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:20:12,130 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:20:12,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-09 03:20:12,165 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-01-09 03:20:12,193 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-01-09 03:20:12,193 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:20:12,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:20:12,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-09 03:20:12,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:20:12,251 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 70 proven. 16 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2025-01-09 03:20:12,251 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:20:12,338 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 40 proven. 16 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2025-01-09 03:20:12,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130834676] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:20:12,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:20:12,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 7 [2025-01-09 03:20:12,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247852961] [2025-01-09 03:20:12,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:20:12,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 03:20:12,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:20:12,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 03:20:12,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2025-01-09 03:20:12,340 INFO L87 Difference]: Start difference. First operand 479 states and 641 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 7 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2025-01-09 03:20:12,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:20:12,629 INFO L93 Difference]: Finished difference Result 1447 states and 2023 transitions. [2025-01-09 03:20:12,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 03:20:12,630 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 7 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 93 [2025-01-09 03:20:12,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:20:12,640 INFO L225 Difference]: With dead ends: 1447 [2025-01-09 03:20:12,641 INFO L226 Difference]: Without dead ends: 1024 [2025-01-09 03:20:12,642 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 184 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2025-01-09 03:20:12,643 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 19 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:20:12,644 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 210 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:20:12,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2025-01-09 03:20:12,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1011. [2025-01-09 03:20:12,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 763 states have (on average 1.254259501965924) internal successors, (957), 772 states have internal predecessors, (957), 228 states have call successors, (228), 20 states have call predecessors, (228), 19 states have return successors, (227), 218 states have call predecessors, (227), 227 states have call successors, (227) [2025-01-09 03:20:12,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1412 transitions. [2025-01-09 03:20:12,963 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1412 transitions. Word has length 93 [2025-01-09 03:20:12,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:20:12,963 INFO L471 AbstractCegarLoop]: Abstraction has 1011 states and 1412 transitions. [2025-01-09 03:20:12,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 7 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2025-01-09 03:20:12,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1412 transitions. [2025-01-09 03:20:12,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-01-09 03:20:12,965 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:20:12,965 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:20:12,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-09 03:20:13,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:20:13,166 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:20:13,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:20:13,166 INFO L85 PathProgramCache]: Analyzing trace with hash 2012527453, now seen corresponding path program 2 times [2025-01-09 03:20:13,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:20:13,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618081568] [2025-01-09 03:20:13,166 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:20:13,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:20:13,173 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 93 statements into 2 equivalence classes. [2025-01-09 03:20:13,184 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 93 of 93 statements. [2025-01-09 03:20:13,184 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:20:13,184 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:20:13,443 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 22 proven. 46 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2025-01-09 03:20:13,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:20:13,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618081568] [2025-01-09 03:20:13,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618081568] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:20:13,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365891620] [2025-01-09 03:20:13,444 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:20:13,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:20:13,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:20:13,446 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:20:13,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-09 03:20:13,477 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 93 statements into 2 equivalence classes. [2025-01-09 03:20:13,503 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 93 of 93 statements. [2025-01-09 03:20:13,503 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:20:13,503 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:20:13,504 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-09 03:20:13,506 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:20:13,629 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 22 proven. 190 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:20:13,630 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:20:13,922 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 22 proven. 46 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2025-01-09 03:20:13,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365891620] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:20:13,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:20:13,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 24 [2025-01-09 03:20:13,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90885217] [2025-01-09 03:20:13,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:20:13,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-01-09 03:20:13,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:20:13,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-01-09 03:20:13,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=316, Unknown=0, NotChecked=0, Total=552 [2025-01-09 03:20:13,925 INFO L87 Difference]: Start difference. First operand 1011 states and 1412 transitions. Second operand has 24 states, 24 states have (on average 4.375) internal successors, (105), 24 states have internal predecessors, (105), 21 states have call successors, (34), 12 states have call predecessors, (34), 11 states have return successors, (33), 20 states have call predecessors, (33), 20 states have call successors, (33) [2025-01-09 03:20:14,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:20:14,698 INFO L93 Difference]: Finished difference Result 1457 states and 2024 transitions. [2025-01-09 03:20:14,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-01-09 03:20:14,699 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.375) internal successors, (105), 24 states have internal predecessors, (105), 21 states have call successors, (34), 12 states have call predecessors, (34), 11 states have return successors, (33), 20 states have call predecessors, (33), 20 states have call successors, (33) Word has length 93 [2025-01-09 03:20:14,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:20:14,704 INFO L225 Difference]: With dead ends: 1457 [2025-01-09 03:20:14,704 INFO L226 Difference]: Without dead ends: 795 [2025-01-09 03:20:14,706 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=584, Invalid=1056, Unknown=0, NotChecked=0, Total=1640 [2025-01-09 03:20:14,707 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 312 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 03:20:14,707 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 320 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 03:20:14,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2025-01-09 03:20:14,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 737. [2025-01-09 03:20:14,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 553 states have (on average 1.209764918625678) internal successors, (669), 558 states have internal predecessors, (669), 162 states have call successors, (162), 22 states have call predecessors, (162), 21 states have return successors, (161), 156 states have call predecessors, (161), 161 states have call successors, (161) [2025-01-09 03:20:14,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 992 transitions. [2025-01-09 03:20:14,860 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 992 transitions. Word has length 93 [2025-01-09 03:20:14,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:20:14,861 INFO L471 AbstractCegarLoop]: Abstraction has 737 states and 992 transitions. [2025-01-09 03:20:14,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.375) internal successors, (105), 24 states have internal predecessors, (105), 21 states have call successors, (34), 12 states have call predecessors, (34), 11 states have return successors, (33), 20 states have call predecessors, (33), 20 states have call successors, (33) [2025-01-09 03:20:14,861 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 992 transitions. [2025-01-09 03:20:14,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-01-09 03:20:14,862 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:20:14,863 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:20:14,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-01-09 03:20:15,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:20:15,063 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:20:15,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:20:15,064 INFO L85 PathProgramCache]: Analyzing trace with hash 104822048, now seen corresponding path program 1 times [2025-01-09 03:20:15,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:20:15,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575048196] [2025-01-09 03:20:15,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:20:15,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:20:15,070 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-01-09 03:20:15,084 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-01-09 03:20:15,084 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:20:15,084 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:20:15,386 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 20 proven. 56 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2025-01-09 03:20:15,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:20:15,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575048196] [2025-01-09 03:20:15,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575048196] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:20:15,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692423564] [2025-01-09 03:20:15,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:20:15,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:20:15,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:20:15,390 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:20:15,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-09 03:20:15,423 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-01-09 03:20:15,451 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-01-09 03:20:15,451 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:20:15,451 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:20:15,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-01-09 03:20:15,455 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:20:15,571 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 20 proven. 236 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:20:15,571 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:20:15,877 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 20 proven. 56 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2025-01-09 03:20:15,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692423564] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:20:15,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:20:15,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 14] total 26 [2025-01-09 03:20:15,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165244714] [2025-01-09 03:20:15,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:20:15,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-09 03:20:15,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:20:15,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-09 03:20:15,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=369, Unknown=0, NotChecked=0, Total=650 [2025-01-09 03:20:15,880 INFO L87 Difference]: Start difference. First operand 737 states and 992 transitions. Second operand has 26 states, 26 states have (on average 4.3076923076923075) internal successors, (112), 26 states have internal predecessors, (112), 23 states have call successors, (37), 13 states have call predecessors, (37), 12 states have return successors, (36), 22 states have call predecessors, (36), 22 states have call successors, (36) [2025-01-09 03:20:16,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:20:16,698 INFO L93 Difference]: Finished difference Result 848 states and 1150 transitions. [2025-01-09 03:20:16,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2025-01-09 03:20:16,699 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.3076923076923075) internal successors, (112), 26 states have internal predecessors, (112), 23 states have call successors, (37), 13 states have call predecessors, (37), 12 states have return successors, (36), 22 states have call predecessors, (36), 22 states have call successors, (36) Word has length 99 [2025-01-09 03:20:16,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:20:16,705 INFO L225 Difference]: With dead ends: 848 [2025-01-09 03:20:16,705 INFO L226 Difference]: Without dead ends: 843 [2025-01-09 03:20:16,707 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=670, Invalid=1222, Unknown=0, NotChecked=0, Total=1892 [2025-01-09 03:20:16,708 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 352 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 03:20:16,708 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 306 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 03:20:16,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2025-01-09 03:20:16,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 828. [2025-01-09 03:20:16,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 622 states have (on average 1.1881028938906752) internal successors, (739), 628 states have internal predecessors, (739), 182 states have call successors, (182), 24 states have call predecessors, (182), 23 states have return successors, (181), 175 states have call predecessors, (181), 181 states have call successors, (181) [2025-01-09 03:20:16,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1102 transitions. [2025-01-09 03:20:16,876 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1102 transitions. Word has length 99 [2025-01-09 03:20:16,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:20:16,876 INFO L471 AbstractCegarLoop]: Abstraction has 828 states and 1102 transitions. [2025-01-09 03:20:16,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.3076923076923075) internal successors, (112), 26 states have internal predecessors, (112), 23 states have call successors, (37), 13 states have call predecessors, (37), 12 states have return successors, (36), 22 states have call predecessors, (36), 22 states have call successors, (36) [2025-01-09 03:20:16,877 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1102 transitions. [2025-01-09 03:20:16,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2025-01-09 03:20:16,882 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:20:16,882 INFO L218 NwaCegarLoop]: trace histogram [21, 20, 20, 11, 10, 10, 10, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:20:16,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-01-09 03:20:17,082 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,SelfDestructingSolverStorable14 [2025-01-09 03:20:17,083 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:20:17,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:20:17,084 INFO L85 PathProgramCache]: Analyzing trace with hash -993436764, now seen corresponding path program 2 times [2025-01-09 03:20:17,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:20:17,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162278417] [2025-01-09 03:20:17,084 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:20:17,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:20:17,096 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 183 statements into 2 equivalence classes. [2025-01-09 03:20:17,109 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 183 of 183 statements. [2025-01-09 03:20:17,109 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:20:17,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:20:17,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 898 trivial. 0 not checked. [2025-01-09 03:20:17,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:20:17,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162278417] [2025-01-09 03:20:17,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162278417] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:20:17,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:20:17,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 03:20:17,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646179106] [2025-01-09 03:20:17,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:20:17,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 03:20:17,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:20:17,177 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 03:20:17,177 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:20:17,178 INFO L87 Difference]: Start difference. First operand 828 states and 1102 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2025-01-09 03:20:17,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:20:17,369 INFO L93 Difference]: Finished difference Result 1341 states and 1782 transitions. [2025-01-09 03:20:17,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 03:20:17,370 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 183 [2025-01-09 03:20:17,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:20:17,375 INFO L225 Difference]: With dead ends: 1341 [2025-01-09 03:20:17,375 INFO L226 Difference]: Without dead ends: 858 [2025-01-09 03:20:17,377 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:20:17,378 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 9 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:20:17,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 91 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:20:17,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2025-01-09 03:20:17,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 803. [2025-01-09 03:20:17,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 606 states have (on average 1.1798679867986799) internal successors, (715), 613 states have internal predecessors, (715), 173 states have call successors, (173), 24 states have call predecessors, (173), 23 states have return successors, (172), 165 states have call predecessors, (172), 172 states have call successors, (172) [2025-01-09 03:20:17,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1060 transitions. [2025-01-09 03:20:17,529 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1060 transitions. Word has length 183 [2025-01-09 03:20:17,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:20:17,529 INFO L471 AbstractCegarLoop]: Abstraction has 803 states and 1060 transitions. [2025-01-09 03:20:17,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2025-01-09 03:20:17,529 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1060 transitions. [2025-01-09 03:20:17,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2025-01-09 03:20:17,535 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:20:17,535 INFO L218 NwaCegarLoop]: trace histogram [21, 20, 20, 11, 10, 10, 10, 7, 7, 6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:20:17,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-01-09 03:20:17,535 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:20:17,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:20:17,536 INFO L85 PathProgramCache]: Analyzing trace with hash 167568258, now seen corresponding path program 3 times [2025-01-09 03:20:17,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:20:17,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265776774] [2025-01-09 03:20:17,536 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:20:17,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:20:17,546 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 183 statements into 12 equivalence classes. [2025-01-09 03:20:17,598 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 135 of 183 statements. [2025-01-09 03:20:17,600 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-01-09 03:20:17,600 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:20:17,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1108 backedges. 212 proven. 112 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2025-01-09 03:20:17,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:20:17,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265776774] [2025-01-09 03:20:17,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265776774] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:20:17,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082867506] [2025-01-09 03:20:17,798 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:20:17,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:20:17,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:20:17,801 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:20:17,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-09 03:20:17,842 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 183 statements into 12 equivalence classes. [2025-01-09 03:20:17,995 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 135 of 183 statements. [2025-01-09 03:20:17,996 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-01-09 03:20:17,996 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:20:17,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-09 03:20:18,001 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:20:18,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1108 backedges. 224 proven. 100 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2025-01-09 03:20:18,171 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:20:18,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1108 backedges. 224 proven. 100 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2025-01-09 03:20:18,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082867506] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:20:18,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:20:18,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2025-01-09 03:20:18,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910455509] [2025-01-09 03:20:18,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:20:18,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-09 03:20:18,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:20:18,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-09 03:20:18,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2025-01-09 03:20:18,601 INFO L87 Difference]: Start difference. First operand 803 states and 1060 transitions. Second operand has 20 states, 20 states have (on average 6.55) internal successors, (131), 20 states have internal predecessors, (131), 20 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (38), 19 states have call predecessors, (38), 19 states have call successors, (38) [2025-01-09 03:20:20,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:20:20,626 INFO L93 Difference]: Finished difference Result 3365 states and 4723 transitions. [2025-01-09 03:20:20,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-01-09 03:20:20,626 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.55) internal successors, (131), 20 states have internal predecessors, (131), 20 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (38), 19 states have call predecessors, (38), 19 states have call successors, (38) Word has length 183 [2025-01-09 03:20:20,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:20:20,641 INFO L225 Difference]: With dead ends: 3365 [2025-01-09 03:20:20,641 INFO L226 Difference]: Without dead ends: 3066 [2025-01-09 03:20:20,643 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=555, Invalid=2097, Unknown=0, NotChecked=0, Total=2652 [2025-01-09 03:20:20,644 INFO L435 NwaCegarLoop]: 222 mSDtfsCounter, 377 mSDsluCounter, 1628 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-01-09 03:20:20,644 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 1850 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-01-09 03:20:20,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3066 states. [2025-01-09 03:20:21,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3066 to 2563. [2025-01-09 03:20:21,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2563 states, 1937 states have (on average 1.2395456892101187) internal successors, (2401), 1972 states have internal predecessors, (2401), 602 states have call successors, (602), 24 states have call predecessors, (602), 23 states have return successors, (601), 566 states have call predecessors, (601), 601 states have call successors, (601) [2025-01-09 03:20:21,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 3604 transitions. [2025-01-09 03:20:21,209 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 3604 transitions. Word has length 183 [2025-01-09 03:20:21,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:20:21,211 INFO L471 AbstractCegarLoop]: Abstraction has 2563 states and 3604 transitions. [2025-01-09 03:20:21,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.55) internal successors, (131), 20 states have internal predecessors, (131), 20 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (38), 19 states have call predecessors, (38), 19 states have call successors, (38) [2025-01-09 03:20:21,211 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 3604 transitions. [2025-01-09 03:20:21,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2025-01-09 03:20:21,220 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:20:21,220 INFO L218 NwaCegarLoop]: trace histogram [21, 20, 20, 9, 9, 8, 8, 8, 8, 8, 8, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:20:21,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-01-09 03:20:21,424 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,SelfDestructingSolverStorable16 [2025-01-09 03:20:21,425 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:20:21,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:20:21,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1795040542, now seen corresponding path program 4 times [2025-01-09 03:20:21,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:20:21,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917247650] [2025-01-09 03:20:21,426 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:20:21,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:20:21,439 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 183 statements into 2 equivalence classes. [2025-01-09 03:20:21,460 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 158 of 183 statements. [2025-01-09 03:20:21,460 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 03:20:21,460 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:20:21,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 196 proven. 20 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2025-01-09 03:20:21,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:20:21,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917247650] [2025-01-09 03:20:21,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917247650] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:20:21,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661528943] [2025-01-09 03:20:21,590 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:20:21,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:20:21,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:20:21,592 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:20:21,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-09 03:20:21,633 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 183 statements into 2 equivalence classes. [2025-01-09 03:20:21,673 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 158 of 183 statements. [2025-01-09 03:20:21,673 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 03:20:21,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:20:21,675 INFO L256 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 03:20:21,679 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:20:21,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 264 proven. 184 refuted. 0 times theorem prover too weak. 644 trivial. 0 not checked. [2025-01-09 03:20:21,846 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:20:22,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 124 proven. 184 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2025-01-09 03:20:22,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661528943] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:20:22,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:20:22,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 14 [2025-01-09 03:20:22,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832192841] [2025-01-09 03:20:22,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:20:22,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 03:20:22,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:20:22,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 03:20:22,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2025-01-09 03:20:22,115 INFO L87 Difference]: Start difference. First operand 2563 states and 3604 transitions. Second operand has 14 states, 14 states have (on average 7.785714285714286) internal successors, (109), 14 states have internal predecessors, (109), 14 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 14 states have call predecessors, (30), 14 states have call successors, (30) [2025-01-09 03:20:23,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:20:23,827 INFO L93 Difference]: Finished difference Result 5369 states and 7628 transitions. [2025-01-09 03:20:23,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2025-01-09 03:20:23,828 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.785714285714286) internal successors, (109), 14 states have internal predecessors, (109), 14 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 14 states have call predecessors, (30), 14 states have call successors, (30) Word has length 183 [2025-01-09 03:20:23,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:20:23,851 INFO L225 Difference]: With dead ends: 5369 [2025-01-09 03:20:23,851 INFO L226 Difference]: Without dead ends: 4029 [2025-01-09 03:20:23,857 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 382 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=373, Invalid=1883, Unknown=0, NotChecked=0, Total=2256 [2025-01-09 03:20:23,857 INFO L435 NwaCegarLoop]: 229 mSDtfsCounter, 230 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 03:20:23,858 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 1832 Invalid, 817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 03:20:23,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4029 states. [2025-01-09 03:20:24,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4029 to 3539. [2025-01-09 03:20:24,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3539 states, 2674 states have (on average 1.236724008975318) internal successors, (3307), 2725 states have internal predecessors, (3307), 841 states have call successors, (841), 24 states have call predecessors, (841), 23 states have return successors, (840), 789 states have call predecessors, (840), 840 states have call successors, (840) [2025-01-09 03:20:24,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3539 states to 3539 states and 4988 transitions. [2025-01-09 03:20:24,788 INFO L78 Accepts]: Start accepts. Automaton has 3539 states and 4988 transitions. Word has length 183 [2025-01-09 03:20:24,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:20:24,789 INFO L471 AbstractCegarLoop]: Abstraction has 3539 states and 4988 transitions. [2025-01-09 03:20:24,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.785714285714286) internal successors, (109), 14 states have internal predecessors, (109), 14 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 14 states have call predecessors, (30), 14 states have call successors, (30) [2025-01-09 03:20:24,789 INFO L276 IsEmpty]: Start isEmpty. Operand 3539 states and 4988 transitions. [2025-01-09 03:20:24,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2025-01-09 03:20:24,802 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:20:24,802 INFO L218 NwaCegarLoop]: trace histogram [21, 20, 20, 10, 9, 9, 9, 8, 7, 7, 7, 6, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:20:24,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-01-09 03:20:25,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-01-09 03:20:25,003 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:20:25,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:20:25,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1364236652, now seen corresponding path program 5 times [2025-01-09 03:20:25,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:20:25,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558869539] [2025-01-09 03:20:25,004 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:20:25,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:20:25,013 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 183 statements into 12 equivalence classes. [2025-01-09 03:20:25,046 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 138 of 183 statements. [2025-01-09 03:20:25,047 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-01-09 03:20:25,047 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:20:25,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 226 proven. 84 refuted. 0 times theorem prover too weak. 786 trivial. 0 not checked. [2025-01-09 03:20:25,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:20:25,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558869539] [2025-01-09 03:20:25,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558869539] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:20:25,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293894693] [2025-01-09 03:20:25,194 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:20:25,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:20:25,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:20:25,197 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:20:25,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-09 03:20:25,238 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 183 statements into 12 equivalence classes. [2025-01-09 03:20:25,328 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 138 of 183 statements. [2025-01-09 03:20:25,328 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-01-09 03:20:25,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:20:25,333 INFO L256 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-09 03:20:25,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:20:25,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 516 proven. 84 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2025-01-09 03:20:25,470 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:20:25,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 226 proven. 84 refuted. 0 times theorem prover too weak. 786 trivial. 0 not checked. [2025-01-09 03:20:25,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293894693] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:20:25,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:20:25,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2025-01-09 03:20:25,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123116077] [2025-01-09 03:20:25,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:20:25,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-09 03:20:25,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:20:25,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-09 03:20:25,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2025-01-09 03:20:25,687 INFO L87 Difference]: Start difference. First operand 3539 states and 4988 transitions. Second operand has 16 states, 16 states have (on average 7.8125) internal successors, (125), 16 states have internal predecessors, (125), 16 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (40), 16 states have call predecessors, (40), 16 states have call successors, (40) [2025-01-09 03:20:27,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:20:27,601 INFO L93 Difference]: Finished difference Result 6211 states and 8847 transitions. [2025-01-09 03:20:27,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-01-09 03:20:27,601 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.8125) internal successors, (125), 16 states have internal predecessors, (125), 16 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (40), 16 states have call predecessors, (40), 16 states have call successors, (40) Word has length 183 [2025-01-09 03:20:27,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:20:27,623 INFO L225 Difference]: With dead ends: 6211 [2025-01-09 03:20:27,623 INFO L226 Difference]: Without dead ends: 4843 [2025-01-09 03:20:27,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=451, Invalid=1355, Unknown=0, NotChecked=0, Total=1806 [2025-01-09 03:20:27,629 INFO L435 NwaCegarLoop]: 153 mSDtfsCounter, 261 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 03:20:27,629 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 1273 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 03:20:27,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4843 states. [2025-01-09 03:20:28,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4843 to 4360. [2025-01-09 03:20:28,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4360 states, 3296 states have (on average 1.2360436893203883) internal successors, (4074), 3364 states have internal predecessors, (4074), 1040 states have call successors, (1040), 24 states have call predecessors, (1040), 23 states have return successors, (1039), 971 states have call predecessors, (1039), 1039 states have call successors, (1039) [2025-01-09 03:20:28,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4360 states to 4360 states and 6153 transitions. [2025-01-09 03:20:28,773 INFO L78 Accepts]: Start accepts. Automaton has 4360 states and 6153 transitions. Word has length 183 [2025-01-09 03:20:28,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:20:28,774 INFO L471 AbstractCegarLoop]: Abstraction has 4360 states and 6153 transitions. [2025-01-09 03:20:28,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.8125) internal successors, (125), 16 states have internal predecessors, (125), 16 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (40), 16 states have call predecessors, (40), 16 states have call successors, (40) [2025-01-09 03:20:28,774 INFO L276 IsEmpty]: Start isEmpty. Operand 4360 states and 6153 transitions. [2025-01-09 03:20:28,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2025-01-09 03:20:28,791 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:20:28,791 INFO L218 NwaCegarLoop]: trace histogram [21, 20, 20, 11, 10, 10, 10, 7, 7, 6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:20:28,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-01-09 03:20:28,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:20:28,992 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:20:28,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:20:28,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1644605314, now seen corresponding path program 6 times [2025-01-09 03:20:28,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:20:28,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971371322] [2025-01-09 03:20:28,992 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:20:28,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:20:29,000 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 183 statements into 12 equivalence classes. [2025-01-09 03:20:29,049 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) and asserted 183 of 183 statements. [2025-01-09 03:20:29,049 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2025-01-09 03:20:29,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:20:30,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1108 backedges. 60 proven. 284 refuted. 0 times theorem prover too weak. 764 trivial. 0 not checked. [2025-01-09 03:20:30,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:20:30,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971371322] [2025-01-09 03:20:30,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971371322] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:20:30,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539762023] [2025-01-09 03:20:30,028 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:20:30,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:20:30,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:20:30,031 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:20:30,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-01-09 03:20:30,073 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 183 statements into 12 equivalence classes. [2025-01-09 03:20:30,373 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) and asserted 183 of 183 statements. [2025-01-09 03:20:30,373 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2025-01-09 03:20:30,373 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:20:30,375 INFO L256 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-09 03:20:30,378 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:20:30,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1108 backedges. 80 proven. 252 refuted. 0 times theorem prover too weak. 776 trivial. 0 not checked. [2025-01-09 03:20:30,656 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:20:31,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1108 backedges. 80 proven. 252 refuted. 0 times theorem prover too weak. 776 trivial. 0 not checked. [2025-01-09 03:20:31,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539762023] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:20:31,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:20:31,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 11, 11] total 43 [2025-01-09 03:20:31,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258146849] [2025-01-09 03:20:31,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:20:31,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-01-09 03:20:31,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:20:31,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-01-09 03:20:31,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=1489, Unknown=0, NotChecked=0, Total=1806 [2025-01-09 03:20:31,100 INFO L87 Difference]: Start difference. First operand 4360 states and 6153 transitions. Second operand has 43 states, 43 states have (on average 4.4186046511627906) internal successors, (190), 43 states have internal predecessors, (190), 41 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (58), 40 states have call predecessors, (58), 40 states have call successors, (58) [2025-01-09 03:21:08,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:21:08,298 INFO L93 Difference]: Finished difference Result 9304 states and 13413 transitions. [2025-01-09 03:21:08,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 944 states. [2025-01-09 03:21:08,298 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.4186046511627906) internal successors, (190), 43 states have internal predecessors, (190), 41 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (58), 40 states have call predecessors, (58), 40 states have call successors, (58) Word has length 183 [2025-01-09 03:21:08,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:21:08,341 INFO L225 Difference]: With dead ends: 9304 [2025-01-09 03:21:08,341 INFO L226 Difference]: Without dead ends: 7803 [2025-01-09 03:21:08,427 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1300 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 952 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436381 ImplicationChecksByTransitivity, 31.4s TimeCoverageRelationStatistics Valid=58756, Invalid=850406, Unknown=0, NotChecked=0, Total=909162 [2025-01-09 03:21:08,427 INFO L435 NwaCegarLoop]: 364 mSDtfsCounter, 1754 mSDsluCounter, 5322 mSDsCounter, 0 mSdLazyCounter, 4913 mSolverCounterSat, 1015 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1760 SdHoareTripleChecker+Valid, 5686 SdHoareTripleChecker+Invalid, 5928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1015 IncrementalHoareTripleChecker+Valid, 4913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2025-01-09 03:21:08,428 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1760 Valid, 5686 Invalid, 5928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1015 Valid, 4913 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2025-01-09 03:21:08,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7803 states. [2025-01-09 03:21:10,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7803 to 6759. [2025-01-09 03:21:10,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6759 states, 5091 states have (on average 1.2158711451581221) internal successors, (6190), 5202 states have internal predecessors, (6190), 1644 states have call successors, (1644), 24 states have call predecessors, (1644), 23 states have return successors, (1643), 1532 states have call predecessors, (1643), 1643 states have call successors, (1643) [2025-01-09 03:21:10,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6759 states to 6759 states and 9477 transitions. [2025-01-09 03:21:10,101 INFO L78 Accepts]: Start accepts. Automaton has 6759 states and 9477 transitions. Word has length 183 [2025-01-09 03:21:10,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:21:10,102 INFO L471 AbstractCegarLoop]: Abstraction has 6759 states and 9477 transitions. [2025-01-09 03:21:10,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 4.4186046511627906) internal successors, (190), 43 states have internal predecessors, (190), 41 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (58), 40 states have call predecessors, (58), 40 states have call successors, (58) [2025-01-09 03:21:10,102 INFO L276 IsEmpty]: Start isEmpty. Operand 6759 states and 9477 transitions. [2025-01-09 03:21:10,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2025-01-09 03:21:10,123 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:21:10,123 INFO L218 NwaCegarLoop]: trace histogram [22, 21, 21, 10, 10, 10, 10, 8, 7, 7, 7, 6, 5, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:21:10,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-01-09 03:21:10,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:21:10,324 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:21:10,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:21:10,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1082570555, now seen corresponding path program 3 times [2025-01-09 03:21:10,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:21:10,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395530674] [2025-01-09 03:21:10,324 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:21:10,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:21:10,331 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 189 statements into 12 equivalence classes. [2025-01-09 03:21:10,399 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 189 of 189 statements. [2025-01-09 03:21:10,402 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-01-09 03:21:10,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:21:11,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1196 backedges. 50 proven. 302 refuted. 0 times theorem prover too weak. 844 trivial. 0 not checked. [2025-01-09 03:21:11,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:21:11,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395530674] [2025-01-09 03:21:11,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395530674] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:21:11,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702700834] [2025-01-09 03:21:11,355 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:21:11,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:21:11,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:21:11,358 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:21:11,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-09 03:21:11,399 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 189 statements into 12 equivalence classes. [2025-01-09 03:21:11,595 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 189 of 189 statements. [2025-01-09 03:21:11,595 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-01-09 03:21:11,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:21:11,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-01-09 03:21:11,604 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:21:11,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1196 backedges. 50 proven. 1142 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:21:11,830 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:21:12,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1196 backedges. 50 proven. 302 refuted. 0 times theorem prover too weak. 844 trivial. 0 not checked. [2025-01-09 03:21:12,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702700834] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:21:12,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:21:12,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 24, 25] total 50 [2025-01-09 03:21:12,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287306134] [2025-01-09 03:21:12,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:21:12,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2025-01-09 03:21:12,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:21:12,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2025-01-09 03:21:12,569 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1123, Invalid=1327, Unknown=0, NotChecked=0, Total=2450 [2025-01-09 03:21:12,570 INFO L87 Difference]: Start difference. First operand 6759 states and 9477 transitions. Second operand has 50 states, 50 states have (on average 4.34) internal successors, (217), 50 states have internal predecessors, (217), 45 states have call successors, (70), 24 states have call predecessors, (70), 23 states have return successors, (69), 44 states have call predecessors, (69), 44 states have call successors, (69) [2025-01-09 03:21:20,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:21:20,926 INFO L93 Difference]: Finished difference Result 30413 states and 47175 transitions. [2025-01-09 03:21:20,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2025-01-09 03:21:20,927 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 4.34) internal successors, (217), 50 states have internal predecessors, (217), 45 states have call successors, (70), 24 states have call predecessors, (70), 23 states have return successors, (69), 44 states have call predecessors, (69), 44 states have call successors, (69) Word has length 189 [2025-01-09 03:21:20,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:21:21,064 INFO L225 Difference]: With dead ends: 30413 [2025-01-09 03:21:21,064 INFO L226 Difference]: Without dead ends: 28406 [2025-01-09 03:21:21,083 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1230 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2864, Invalid=4968, Unknown=0, NotChecked=0, Total=7832 [2025-01-09 03:21:21,084 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 926 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-09 03:21:21,084 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [926 Valid, 643 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-01-09 03:21:21,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28406 states.