./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound10.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/hard2_valuebound10.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 174cfd8cb6426614b32355f584844d4fc6265ba8fd3c3cda6c788ade64de4fc0 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 03:30:17,543 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 03:30:17,597 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 03:30:17,604 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 03:30:17,604 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 03:30:17,621 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 03:30:17,622 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 03:30:17,622 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 03:30:17,622 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 03:30:17,622 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 03:30:17,622 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 03:30:17,622 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 03:30:17,622 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 03:30:17,622 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 03:30:17,622 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 03:30:17,622 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 03:30:17,622 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 03:30:17,623 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 03:30:17,623 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 03:30:17,623 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 03:30:17,623 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 03:30:17,623 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 03:30:17,623 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 03:30:17,623 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 03:30:17,623 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 03:30:17,623 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 03:30:17,623 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 03:30:17,623 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 03:30:17,623 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 03:30:17,623 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 03:30:17,623 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 03:30:17,623 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 03:30:17,623 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:30:17,623 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 03:30:17,623 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 03:30:17,623 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 03:30:17,624 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 03:30:17,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:30:17,624 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 03:30:17,624 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 03:30:17,624 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 03:30:17,624 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 03:30:17,624 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 03:30:17,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 03:30:17,624 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 03:30:17,624 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 03:30:17,624 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 03:30:17,624 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 03:30:17,624 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 -> 174cfd8cb6426614b32355f584844d4fc6265ba8fd3c3cda6c788ade64de4fc0 [2025-01-09 03:30:17,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 03:30:17,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 03:30:17,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 03:30:17,839 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 03:30:17,840 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 03:30:17,840 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound10.c [2025-01-09 03:30:18,909 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/38ae1a03b/64fc13a627f54f37880d535ffb3b42e7/FLAGd5284ae9d [2025-01-09 03:30:19,112 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 03:30:19,113 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound10.c [2025-01-09 03:30:19,119 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/38ae1a03b/64fc13a627f54f37880d535ffb3b42e7/FLAGd5284ae9d [2025-01-09 03:30:19,475 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/38ae1a03b/64fc13a627f54f37880d535ffb3b42e7 [2025-01-09 03:30:19,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 03:30:19,477 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 03:30:19,478 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 03:30:19,478 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 03:30:19,481 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 03:30:19,482 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 03:30:19" (1/1) ... [2025-01-09 03:30:19,482 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27d1fba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:30:19, skipping insertion in model container [2025-01-09 03:30:19,482 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 03:30:19" (1/1) ... [2025-01-09 03:30:19,493 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 03:30:19,577 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/hard2_valuebound10.c[526,539] [2025-01-09 03:30:19,588 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 03:30:19,594 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 03:30:19,603 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/hard2_valuebound10.c[526,539] [2025-01-09 03:30:19,607 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 03:30:19,616 INFO L204 MainTranslator]: Completed translation [2025-01-09 03:30:19,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:30:19 WrapperNode [2025-01-09 03:30:19,617 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 03:30:19,618 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 03:30:19,618 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 03:30:19,618 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 03:30:19,621 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:30:19" (1/1) ... [2025-01-09 03:30:19,625 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:30:19" (1/1) ... [2025-01-09 03:30:19,637 INFO L138 Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2025-01-09 03:30:19,637 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 03:30:19,638 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 03:30:19,638 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 03:30:19,638 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 03:30:19,645 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:30:19" (1/1) ... [2025-01-09 03:30:19,645 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:30:19" (1/1) ... [2025-01-09 03:30:19,649 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:30:19" (1/1) ... [2025-01-09 03:30:19,655 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2025-01-09 03:30:19,656 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:30:19" (1/1) ... [2025-01-09 03:30:19,656 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:30:19" (1/1) ... [2025-01-09 03:30:19,658 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:30:19" (1/1) ... [2025-01-09 03:30:19,658 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:30:19" (1/1) ... [2025-01-09 03:30:19,660 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:30:19" (1/1) ... [2025-01-09 03:30:19,660 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:30:19" (1/1) ... [2025-01-09 03:30:19,661 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:30:19" (1/1) ... [2025-01-09 03:30:19,662 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 03:30:19,662 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 03:30:19,662 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 03:30:19,662 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 03:30:19,663 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:30:19" (1/1) ... [2025-01-09 03:30:19,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:30:19,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:30:19,685 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 03:30:19,687 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 03:30:19,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 03:30:19,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 03:30:19,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-09 03:30:19,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 03:30:19,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 03:30:19,706 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-01-09 03:30:19,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-01-09 03:30:19,742 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 03:30:19,744 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 03:30:19,859 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2025-01-09 03:30:19,859 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 03:30:19,865 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 03:30:19,865 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2025-01-09 03:30:19,865 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:30:19 BoogieIcfgContainer [2025-01-09 03:30:19,865 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 03:30:19,867 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 03:30:19,867 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 03:30:19,870 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 03:30:19,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 03:30:19" (1/3) ... [2025-01-09 03:30:19,870 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c0dfda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 03:30:19, skipping insertion in model container [2025-01-09 03:30:19,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:30:19" (2/3) ... [2025-01-09 03:30:19,870 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c0dfda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 03:30:19, skipping insertion in model container [2025-01-09 03:30:19,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:30:19" (3/3) ... [2025-01-09 03:30:19,871 INFO L128 eAbstractionObserver]: Analyzing ICFG hard2_valuebound10.c [2025-01-09 03:30:19,880 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 03:30:19,881 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hard2_valuebound10.c that has 2 procedures, 24 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-01-09 03:30:19,911 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 03:30:19,918 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;@41b2dae3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 03:30:19,918 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 03:30:19,921 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 16 states have (on average 1.375) internal successors, (22), 15 states have internal predecessors, (22), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-01-09 03:30:19,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-01-09 03:30:19,925 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:30:19,925 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:30:19,926 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:30:19,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:30:19,929 INFO L85 PathProgramCache]: Analyzing trace with hash 120815774, now seen corresponding path program 1 times [2025-01-09 03:30:19,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:30:19,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303726540] [2025-01-09 03:30:19,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:30:19,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:30:19,979 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-09 03:30:19,990 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-09 03:30:19,991 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:30:19,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:30:20,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 03:30:20,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:30:20,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303726540] [2025-01-09 03:30:20,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303726540] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:30:20,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:30:20,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 03:30:20,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276066079] [2025-01-09 03:30:20,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:30:20,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 03:30:20,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:30:20,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 03:30:20,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 03:30:20,045 INFO L87 Difference]: Start difference. First operand has 24 states, 16 states have (on average 1.375) internal successors, (22), 15 states have internal predecessors, (22), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:30:20,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:30:20,059 INFO L93 Difference]: Finished difference Result 45 states and 75 transitions. [2025-01-09 03:30:20,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 03:30:20,062 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-01-09 03:30:20,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:30:20,066 INFO L225 Difference]: With dead ends: 45 [2025-01-09 03:30:20,066 INFO L226 Difference]: Without dead ends: 20 [2025-01-09 03:30:20,070 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 03:30:20,072 INFO L435 NwaCegarLoop]: 32 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, 32 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 03:30:20,074 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:30:20,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2025-01-09 03:30:20,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2025-01-09 03:30:20,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-09 03:30:20,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2025-01-09 03:30:20,097 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 8 [2025-01-09 03:30:20,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:30:20,097 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 28 transitions. [2025-01-09 03:30:20,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:30:20,098 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2025-01-09 03:30:20,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-01-09 03:30:20,098 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:30:20,099 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:30:20,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 03:30:20,099 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:30:20,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:30:20,100 INFO L85 PathProgramCache]: Analyzing trace with hash 178074076, now seen corresponding path program 1 times [2025-01-09 03:30:20,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:30:20,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967300823] [2025-01-09 03:30:20,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:30:20,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:30:20,107 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-09 03:30:20,122 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-09 03:30:20,123 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:30:20,123 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:30:20,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 03:30:20,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:30:20,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967300823] [2025-01-09 03:30:20,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967300823] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:30:20,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:30:20,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 03:30:20,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347856791] [2025-01-09 03:30:20,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:30:20,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 03:30:20,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:30:20,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 03:30:20,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 03:30:20,251 INFO L87 Difference]: Start difference. First operand 20 states and 28 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:30:20,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:30:20,299 INFO L93 Difference]: Finished difference Result 32 states and 44 transitions. [2025-01-09 03:30:20,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:30:20,300 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-01-09 03:30:20,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:30:20,301 INFO L225 Difference]: With dead ends: 32 [2025-01-09 03:30:20,301 INFO L226 Difference]: Without dead ends: 30 [2025-01-09 03:30:20,301 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 03:30:20,302 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 8 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:30:20,303 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 83 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:30:20,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2025-01-09 03:30:20,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2025-01-09 03:30:20,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-09 03:30:20,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2025-01-09 03:30:20,312 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 8 [2025-01-09 03:30:20,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:30:20,312 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2025-01-09 03:30:20,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:30:20,313 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2025-01-09 03:30:20,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-01-09 03:30:20,314 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:30:20,314 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:30:20,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 03:30:20,314 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:30:20,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:30:20,314 INFO L85 PathProgramCache]: Analyzing trace with hash 953479797, now seen corresponding path program 1 times [2025-01-09 03:30:20,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:30:20,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235762978] [2025-01-09 03:30:20,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:30:20,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:30:20,321 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-09 03:30:20,325 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-09 03:30:20,325 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:30:20,325 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:30:20,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 03:30:20,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:30:20,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235762978] [2025-01-09 03:30:20,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235762978] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:30:20,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:30:20,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 03:30:20,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209987597] [2025-01-09 03:30:20,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:30:20,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 03:30:20,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:30:20,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 03:30:20,390 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 03:30:20,390 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 03:30:20,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:30:20,444 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2025-01-09 03:30:20,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:30:20,444 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2025-01-09 03:30:20,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:30:20,445 INFO L225 Difference]: With dead ends: 36 [2025-01-09 03:30:20,445 INFO L226 Difference]: Without dead ends: 34 [2025-01-09 03:30:20,445 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 03:30:20,446 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 8 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:30:20,446 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 80 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:30:20,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2025-01-09 03:30:20,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2025-01-09 03:30:20,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 7 states have call successors, (7), 3 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 03:30:20,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2025-01-09 03:30:20,451 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 13 [2025-01-09 03:30:20,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:30:20,451 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2025-01-09 03:30:20,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 03:30:20,451 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2025-01-09 03:30:20,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-01-09 03:30:20,452 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:30:20,452 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:30:20,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 03:30:20,452 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:30:20,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:30:20,452 INFO L85 PathProgramCache]: Analyzing trace with hash -56114884, now seen corresponding path program 1 times [2025-01-09 03:30:20,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:30:20,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386710130] [2025-01-09 03:30:20,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:30:20,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:30:20,460 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-09 03:30:20,476 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 03:30:20,477 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:30:20,477 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 03:30:20,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [969220572] [2025-01-09 03:30:20,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:30:20,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:30:20,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:30:20,483 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 03:30:20,488 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 03:30:20,514 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-09 03:30:20,535 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 03:30:20,535 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:30:20,535 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:30:20,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 03:30:20,539 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:30:20,626 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 03:30:20,627 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 03:30:20,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:30:20,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386710130] [2025-01-09 03:30:20,628 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 03:30:20,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969220572] [2025-01-09 03:30:20,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969220572] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:30:20,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:30:20,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 03:30:20,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450737634] [2025-01-09 03:30:20,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:30:20,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 03:30:20,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:30:20,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 03:30:20,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 03:30:20,631 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 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 03:30:20,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:30:20,686 INFO L93 Difference]: Finished difference Result 51 states and 68 transitions. [2025-01-09 03:30:20,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:30:20,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 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 18 [2025-01-09 03:30:20,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:30:20,687 INFO L225 Difference]: With dead ends: 51 [2025-01-09 03:30:20,688 INFO L226 Difference]: Without dead ends: 39 [2025-01-09 03:30:20,688 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 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 03:30:20,688 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 4 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:30:20,688 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 81 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:30:20,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2025-01-09 03:30:20,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2025-01-09 03:30:20,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-01-09 03:30:20,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2025-01-09 03:30:20,695 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 18 [2025-01-09 03:30:20,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:30:20,695 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2025-01-09 03:30:20,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 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 03:30:20,695 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2025-01-09 03:30:20,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-01-09 03:30:20,695 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:30:20,695 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:30:20,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 03:30:20,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:30:20,896 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:30:20,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:30:20,896 INFO L85 PathProgramCache]: Analyzing trace with hash 440402527, now seen corresponding path program 1 times [2025-01-09 03:30:20,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:30:20,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711390940] [2025-01-09 03:30:20,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:30:20,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:30:20,902 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-09 03:30:20,915 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 03:30:20,916 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:30:20,916 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 03:30:20,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1805584511] [2025-01-09 03:30:20,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:30:20,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:30:20,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:30:20,919 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 03:30:20,920 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 03:30:20,943 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-09 03:30:20,962 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 03:30:20,962 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:30:20,962 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:30:20,969 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-01-09 03:30:20,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:30:21,037 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:30:21,037 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:30:21,164 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:30:21,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:30:21,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711390940] [2025-01-09 03:30:21,164 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 03:30:21,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805584511] [2025-01-09 03:30:21,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805584511] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:30:21,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 03:30:21,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2025-01-09 03:30:21,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209176631] [2025-01-09 03:30:21,164 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 03:30:21,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 03:30:21,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:30:21,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 03:30:21,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-01-09 03:30:21,165 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 03:30:21,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:30:21,254 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2025-01-09 03:30:21,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 03:30:21,255 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 24 [2025-01-09 03:30:21,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:30:21,256 INFO L225 Difference]: With dead ends: 51 [2025-01-09 03:30:21,256 INFO L226 Difference]: Without dead ends: 49 [2025-01-09 03:30:21,256 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-01-09 03:30:21,259 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 11 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:30:21,259 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 74 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:30:21,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2025-01-09 03:30:21,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2025-01-09 03:30:21,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 29 states have internal predecessors, (34), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2025-01-09 03:30:21,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 63 transitions. [2025-01-09 03:30:21,268 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 63 transitions. Word has length 24 [2025-01-09 03:30:21,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:30:21,268 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 63 transitions. [2025-01-09 03:30:21,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 03:30:21,269 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 63 transitions. [2025-01-09 03:30:21,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-01-09 03:30:21,269 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:30:21,269 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:30:21,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 03:30:21,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:30:21,470 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:30:21,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:30:21,470 INFO L85 PathProgramCache]: Analyzing trace with hash -728619833, now seen corresponding path program 1 times [2025-01-09 03:30:21,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:30:21,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670531547] [2025-01-09 03:30:21,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:30:21,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:30:21,475 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-09 03:30:21,493 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 03:30:21,493 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:30:21,493 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 03:30:21,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [42091404] [2025-01-09 03:30:21,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:30:21,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:30:21,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:30:21,495 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 03:30:21,496 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 03:30:21,517 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-09 03:30:21,531 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 03:30:21,532 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:30:21,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:30:21,532 INFO L256 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-09 03:30:21,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:30:21,612 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-01-09 03:30:21,613 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:30:21,662 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2025-01-09 03:30:21,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:30:21,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670531547] [2025-01-09 03:30:21,662 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 03:30:21,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42091404] [2025-01-09 03:30:21,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42091404] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 03:30:21,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 03:30:21,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2025-01-09 03:30:21,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220922454] [2025-01-09 03:30:21,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:30:21,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 03:30:21,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:30:21,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 03:30:21,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-01-09 03:30:21,663 INFO L87 Difference]: Start difference. First operand 48 states and 63 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-01-09 03:30:22,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:30:22,495 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2025-01-09 03:30:22,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:30:22,496 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), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 34 [2025-01-09 03:30:22,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:30:22,498 INFO L225 Difference]: With dead ends: 57 [2025-01-09 03:30:22,499 INFO L226 Difference]: Without dead ends: 55 [2025-01-09 03:30:22,499 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-01-09 03:30:22,500 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 4 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-01-09 03:30:22,501 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 75 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-01-09 03:30:22,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2025-01-09 03:30:22,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2025-01-09 03:30:22,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2025-01-09 03:30:22,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions. [2025-01-09 03:30:22,515 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 70 transitions. Word has length 34 [2025-01-09 03:30:22,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:30:22,515 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 70 transitions. [2025-01-09 03:30:22,515 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), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-01-09 03:30:22,515 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 70 transitions. [2025-01-09 03:30:22,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-01-09 03:30:22,516 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:30:22,517 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:30:22,523 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 03:30:22,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:30:22,721 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:30:22,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:30:22,721 INFO L85 PathProgramCache]: Analyzing trace with hash -821206152, now seen corresponding path program 1 times [2025-01-09 03:30:22,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:30:22,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780520037] [2025-01-09 03:30:22,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:30:22,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:30:22,727 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-01-09 03:30:22,741 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-01-09 03:30:22,741 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:30:22,741 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:30:22,831 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2025-01-09 03:30:22,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:30:22,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780520037] [2025-01-09 03:30:22,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780520037] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:30:22,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:30:22,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 03:30:22,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862176622] [2025-01-09 03:30:22,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:30:22,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 03:30:22,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:30:22,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 03:30:22,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 03:30:22,833 INFO L87 Difference]: Start difference. First operand 54 states and 70 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-01-09 03:30:22,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:30:22,870 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2025-01-09 03:30:22,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:30:22,871 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 40 [2025-01-09 03:30:22,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:30:22,871 INFO L225 Difference]: With dead ends: 62 [2025-01-09 03:30:22,871 INFO L226 Difference]: Without dead ends: 51 [2025-01-09 03:30:22,872 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 03:30:22,872 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 3 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:30:22,872 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 91 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:30:22,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2025-01-09 03:30:22,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2025-01-09 03:30:22,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 29 states have (on average 1.206896551724138) internal successors, (35), 32 states have internal predecessors, (35), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2025-01-09 03:30:22,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2025-01-09 03:30:22,882 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 40 [2025-01-09 03:30:22,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:30:22,882 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2025-01-09 03:30:22,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-01-09 03:30:22,882 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2025-01-09 03:30:22,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-01-09 03:30:22,883 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:30:22,883 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:30:22,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-09 03:30:22,883 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:30:22,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:30:22,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1422038353, now seen corresponding path program 1 times [2025-01-09 03:30:22,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:30:22,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935874261] [2025-01-09 03:30:22,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:30:22,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:30:22,891 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-01-09 03:30:22,902 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-01-09 03:30:22,903 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:30:22,903 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 03:30:22,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [72687081] [2025-01-09 03:30:22,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:30:22,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:30:22,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:30:22,906 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 03:30:22,907 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 03:30:22,937 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-01-09 03:30:22,952 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-01-09 03:30:22,953 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:30:22,953 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:30:22,954 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-01-09 03:30:22,956 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:30:23,141 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 18 proven. 24 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2025-01-09 03:30:23,141 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:30:23,856 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 18 proven. 24 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2025-01-09 03:30:23,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:30:23,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935874261] [2025-01-09 03:30:23,857 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 03:30:23,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72687081] [2025-01-09 03:30:23,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72687081] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:30:23,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 03:30:23,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2025-01-09 03:30:23,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616979526] [2025-01-09 03:30:23,857 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 03:30:23,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-09 03:30:23,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:30:23,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-09 03:30:23,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2025-01-09 03:30:23,858 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 15 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 14 states have internal predecessors, (26), 7 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2025-01-09 03:30:24,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:30:24,332 INFO L93 Difference]: Finished difference Result 116 states and 161 transitions. [2025-01-09 03:30:24,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-09 03:30:24,333 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 14 states have internal predecessors, (26), 7 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 52 [2025-01-09 03:30:24,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:30:24,334 INFO L225 Difference]: With dead ends: 116 [2025-01-09 03:30:24,334 INFO L226 Difference]: Without dead ends: 95 [2025-01-09 03:30:24,335 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2025-01-09 03:30:24,335 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 27 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:30:24,335 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 147 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:30:24,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2025-01-09 03:30:24,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2025-01-09 03:30:24,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 56 states have internal predecessors, (65), 31 states have call successors, (31), 10 states have call predecessors, (31), 10 states have return successors, (30), 26 states have call predecessors, (30), 30 states have call successors, (30) [2025-01-09 03:30:24,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 126 transitions. [2025-01-09 03:30:24,364 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 126 transitions. Word has length 52 [2025-01-09 03:30:24,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:30:24,365 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 126 transitions. [2025-01-09 03:30:24,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 14 states have internal predecessors, (26), 7 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2025-01-09 03:30:24,365 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 126 transitions. [2025-01-09 03:30:24,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-01-09 03:30:24,366 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:30:24,366 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:30:24,373 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 03:30:24,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-01-09 03:30:24,567 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:30:24,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:30:24,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1807358855, now seen corresponding path program 1 times [2025-01-09 03:30:24,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:30:24,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496964665] [2025-01-09 03:30:24,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:30:24,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:30:24,571 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-01-09 03:30:24,592 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-01-09 03:30:24,592 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:30:24,592 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 03:30:24,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1747096211] [2025-01-09 03:30:24,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:30:24,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:30:24,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:30:24,597 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 03:30:24,598 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 03:30:24,619 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-01-09 03:30:24,636 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-01-09 03:30:24,636 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:30:24,636 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:30:24,637 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-01-09 03:30:24,638 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:30:24,798 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 22 proven. 32 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2025-01-09 03:30:24,798 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:30:25,139 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 22 proven. 32 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2025-01-09 03:30:25,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:30:25,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496964665] [2025-01-09 03:30:25,139 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 03:30:25,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747096211] [2025-01-09 03:30:25,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747096211] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:30:25,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 03:30:25,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2025-01-09 03:30:25,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330199022] [2025-01-09 03:30:25,139 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 03:30:25,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-09 03:30:25,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:30:25,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-09 03:30:25,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2025-01-09 03:30:25,140 INFO L87 Difference]: Start difference. First operand 93 states and 126 transitions. Second operand has 16 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 15 states have internal predecessors, (28), 8 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2025-01-09 03:30:25,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:30:25,463 INFO L93 Difference]: Finished difference Result 142 states and 195 transitions. [2025-01-09 03:30:25,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-09 03:30:25,463 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 15 states have internal predecessors, (28), 8 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) Word has length 63 [2025-01-09 03:30:25,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:30:25,464 INFO L225 Difference]: With dead ends: 142 [2025-01-09 03:30:25,465 INFO L226 Difference]: Without dead ends: 115 [2025-01-09 03:30:25,466 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2025-01-09 03:30:25,466 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 11 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:30:25,466 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 155 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:30:25,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2025-01-09 03:30:25,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 91. [2025-01-09 03:30:25,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 56 states have internal predecessors, (62), 28 states have call successors, (28), 11 states have call predecessors, (28), 11 states have return successors, (27), 23 states have call predecessors, (27), 27 states have call successors, (27) [2025-01-09 03:30:25,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 117 transitions. [2025-01-09 03:30:25,493 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 117 transitions. Word has length 63 [2025-01-09 03:30:25,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:30:25,493 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 117 transitions. [2025-01-09 03:30:25,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 15 states have internal predecessors, (28), 8 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2025-01-09 03:30:25,493 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 117 transitions. [2025-01-09 03:30:25,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-01-09 03:30:25,494 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:30:25,494 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 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 03:30:25,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-09 03:30:25,700 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 03:30:25,700 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:30:25,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:30:25,700 INFO L85 PathProgramCache]: Analyzing trace with hash -423636374, now seen corresponding path program 1 times [2025-01-09 03:30:25,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:30:25,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785365010] [2025-01-09 03:30:25,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:30:25,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:30:25,705 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-01-09 03:30:25,714 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-01-09 03:30:25,714 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:30:25,714 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:30:26,013 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2025-01-09 03:30:26,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:30:26,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785365010] [2025-01-09 03:30:26,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785365010] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:30:26,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340571105] [2025-01-09 03:30:26,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:30:26,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:30:26,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:30:26,015 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 03:30:26,017 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 03:30:26,039 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-01-09 03:30:26,057 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-01-09 03:30:26,057 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:30:26,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:30:26,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-01-09 03:30:26,064 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:30:26,166 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2025-01-09 03:30:26,167 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:30:26,400 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2025-01-09 03:30:26,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340571105] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:30:26,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:30:26,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2025-01-09 03:30:26,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859385417] [2025-01-09 03:30:26,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:30:26,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 03:30:26,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:30:26,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 03:30:26,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2025-01-09 03:30:26,402 INFO L87 Difference]: Start difference. First operand 91 states and 117 transitions. Second operand has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 12 states have internal predecessors, (29), 8 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2025-01-09 03:30:26,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:30:26,546 INFO L93 Difference]: Finished difference Result 110 states and 136 transitions. [2025-01-09 03:30:26,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 03:30:26,546 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 12 states have internal predecessors, (29), 8 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) Word has length 68 [2025-01-09 03:30:26,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:30:26,547 INFO L225 Difference]: With dead ends: 110 [2025-01-09 03:30:26,547 INFO L226 Difference]: Without dead ends: 84 [2025-01-09 03:30:26,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 128 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2025-01-09 03:30:26,548 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 11 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:30:26,548 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 201 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:30:26,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2025-01-09 03:30:26,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2025-01-09 03:30:26,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 49 states have (on average 1.1428571428571428) internal successors, (56), 52 states have internal predecessors, (56), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2025-01-09 03:30:26,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 101 transitions. [2025-01-09 03:30:26,560 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 101 transitions. Word has length 68 [2025-01-09 03:30:26,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:30:26,560 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 101 transitions. [2025-01-09 03:30:26,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 12 states have internal predecessors, (29), 8 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2025-01-09 03:30:26,560 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 101 transitions. [2025-01-09 03:30:26,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-01-09 03:30:26,561 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:30:26,561 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:30:26,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-09 03:30:26,765 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 03:30:26,765 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:30:26,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:30:26,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1583120701, now seen corresponding path program 2 times [2025-01-09 03:30:26,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:30:26,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243024164] [2025-01-09 03:30:26,766 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:30:26,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:30:26,771 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 80 statements into 2 equivalence classes. [2025-01-09 03:30:26,790 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 80 of 80 statements. [2025-01-09 03:30:26,790 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:30:26,790 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 03:30:26,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [576751969] [2025-01-09 03:30:26,791 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:30:26,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:30:26,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:30:26,794 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 03:30:26,795 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 03:30:26,817 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 80 statements into 2 equivalence classes. [2025-01-09 03:30:26,834 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 80 of 80 statements. [2025-01-09 03:30:26,834 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:30:26,834 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:30:26,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-01-09 03:30:26,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:30:27,071 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 28 proven. 52 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2025-01-09 03:30:27,071 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:30:32,850 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 28 proven. 52 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2025-01-09 03:30:32,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:30:32,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243024164] [2025-01-09 03:30:32,850 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 03:30:32,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576751969] [2025-01-09 03:30:32,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576751969] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:30:32,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 03:30:32,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2025-01-09 03:30:32,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925076693] [2025-01-09 03:30:32,851 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 03:30:32,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-09 03:30:32,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:30:32,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-09 03:30:32,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2025-01-09 03:30:32,852 INFO L87 Difference]: Start difference. First operand 84 states and 101 transitions. Second operand has 21 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 19 states have internal predecessors, (32), 11 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 9 states have call predecessors, (26), 9 states have call successors, (26) [2025-01-09 03:30:38,710 WARN L286 SmtUtils]: Spent 5.58s on a formula simplification. DAG size of input: 168 DAG size of output: 82 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-01-09 03:30:40,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:30:40,396 INFO L93 Difference]: Finished difference Result 172 states and 235 transitions. [2025-01-09 03:30:40,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-01-09 03:30:40,396 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 19 states have internal predecessors, (32), 11 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 9 states have call predecessors, (26), 9 states have call successors, (26) Word has length 80 [2025-01-09 03:30:40,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:30:40,398 INFO L225 Difference]: With dead ends: 172 [2025-01-09 03:30:40,398 INFO L226 Difference]: Without dead ends: 142 [2025-01-09 03:30:40,398 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=158, Invalid=544, Unknown=0, NotChecked=0, Total=702 [2025-01-09 03:30:40,399 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 39 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-01-09 03:30:40,400 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 283 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-01-09 03:30:40,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2025-01-09 03:30:40,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 138. [2025-01-09 03:30:40,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 74 states have (on average 1.2432432432432432) internal successors, (92), 82 states have internal predecessors, (92), 49 states have call successors, (49), 14 states have call predecessors, (49), 14 states have return successors, (48), 41 states have call predecessors, (48), 48 states have call successors, (48) [2025-01-09 03:30:40,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 189 transitions. [2025-01-09 03:30:40,434 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 189 transitions. Word has length 80 [2025-01-09 03:30:40,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:30:40,435 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 189 transitions. [2025-01-09 03:30:40,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 19 states have internal predecessors, (32), 11 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 9 states have call predecessors, (26), 9 states have call successors, (26) [2025-01-09 03:30:40,435 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 189 transitions. [2025-01-09 03:30:40,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-01-09 03:30:40,436 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:30:40,436 INFO L218 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:30:40,442 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 03:30:40,636 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 03:30:40,637 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:30:40,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:30:40,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1870214869, now seen corresponding path program 2 times [2025-01-09 03:30:40,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:30:40,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629057159] [2025-01-09 03:30:40,637 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:30:40,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:30:40,642 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 91 statements into 2 equivalence classes. [2025-01-09 03:30:40,671 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 91 of 91 statements. [2025-01-09 03:30:40,671 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:30:40,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 03:30:40,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1018728715] [2025-01-09 03:30:40,672 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:30:40,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:30:40,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:30:40,677 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 03:30:40,679 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 03:30:40,707 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 91 statements into 2 equivalence classes. [2025-01-09 03:30:40,730 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 91 of 91 statements. [2025-01-09 03:30:40,730 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:30:40,730 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:30:40,732 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 49 conjuncts are in the unsatisfiable core [2025-01-09 03:30:40,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:30:40,947 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2025-01-09 03:30:40,948 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:30:42,306 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2025-01-09 03:30:42,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:30:42,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629057159] [2025-01-09 03:30:42,307 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 03:30:42,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018728715] [2025-01-09 03:30:42,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018728715] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:30:42,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 03:30:42,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2025-01-09 03:30:42,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898067048] [2025-01-09 03:30:42,307 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 03:30:42,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-01-09 03:30:42,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:30:42,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-01-09 03:30:42,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=545, Unknown=0, NotChecked=0, Total=702 [2025-01-09 03:30:42,308 INFO L87 Difference]: Start difference. First operand 138 states and 189 transitions. Second operand has 27 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 25 states have internal predecessors, (34), 15 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 13 states have call predecessors, (30), 13 states have call successors, (30) [2025-01-09 03:30:45,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:30:45,328 INFO L93 Difference]: Finished difference Result 207 states and 292 transitions. [2025-01-09 03:30:45,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-01-09 03:30:45,329 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 25 states have internal predecessors, (34), 15 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 13 states have call predecessors, (30), 13 states have call successors, (30) Word has length 91 [2025-01-09 03:30:45,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:30:45,331 INFO L225 Difference]: With dead ends: 207 [2025-01-09 03:30:45,331 INFO L226 Difference]: Without dead ends: 170 [2025-01-09 03:30:45,331 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=276, Invalid=846, Unknown=0, NotChecked=0, Total=1122 [2025-01-09 03:30:45,332 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 34 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-01-09 03:30:45,332 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 243 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-01-09 03:30:45,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2025-01-09 03:30:45,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 142. [2025-01-09 03:30:45,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 77 states have (on average 1.2467532467532467) internal successors, (96), 85 states have internal predecessors, (96), 49 states have call successors, (49), 15 states have call predecessors, (49), 15 states have return successors, (48), 41 states have call predecessors, (48), 48 states have call successors, (48) [2025-01-09 03:30:45,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 193 transitions. [2025-01-09 03:30:45,366 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 193 transitions. Word has length 91 [2025-01-09 03:30:45,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:30:45,367 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 193 transitions. [2025-01-09 03:30:45,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 25 states have internal predecessors, (34), 15 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 13 states have call predecessors, (30), 13 states have call successors, (30) [2025-01-09 03:30:45,367 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 193 transitions. [2025-01-09 03:30:45,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-01-09 03:30:45,370 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:30:45,371 INFO L218 NwaCegarLoop]: trace histogram [17, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:30:45,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-01-09 03:30:45,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:30:45,575 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:30:45,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:30:45,575 INFO L85 PathProgramCache]: Analyzing trace with hash -95184932, now seen corresponding path program 2 times [2025-01-09 03:30:45,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:30:45,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384647885] [2025-01-09 03:30:45,576 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:30:45,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:30:45,579 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 96 statements into 2 equivalence classes. [2025-01-09 03:30:45,589 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 96 of 96 statements. [2025-01-09 03:30:45,589 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:30:45,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:30:45,922 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 32 proven. 22 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 03:30:45,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:30:45,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384647885] [2025-01-09 03:30:45,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384647885] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:30:45,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240361762] [2025-01-09 03:30:45,922 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:30:45,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:30:45,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:30:45,926 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 03:30:45,927 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 03:30:45,949 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 96 statements into 2 equivalence classes. [2025-01-09 03:30:45,970 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 96 of 96 statements. [2025-01-09 03:30:45,970 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:30:45,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:30:45,971 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-01-09 03:30:45,973 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:30:46,158 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 32 proven. 22 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 03:30:46,158 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:30:46,736 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 32 proven. 22 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2025-01-09 03:30:46,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240361762] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:30:46,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:30:46,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 8] total 19 [2025-01-09 03:30:46,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028329967] [2025-01-09 03:30:46,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:30:46,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-09 03:30:46,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:30:46,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-09 03:30:46,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2025-01-09 03:30:46,738 INFO L87 Difference]: Start difference. First operand 142 states and 193 transitions. Second operand has 19 states, 19 states have (on average 2.0) internal successors, (38), 17 states have internal predecessors, (38), 13 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 13 states have call predecessors, (47), 13 states have call successors, (47) [2025-01-09 03:30:47,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:30:47,020 INFO L93 Difference]: Finished difference Result 200 states and 264 transitions. [2025-01-09 03:30:47,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-09 03:30:47,020 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 17 states have internal predecessors, (38), 13 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 13 states have call predecessors, (47), 13 states have call successors, (47) Word has length 96 [2025-01-09 03:30:47,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:30:47,021 INFO L225 Difference]: With dead ends: 200 [2025-01-09 03:30:47,021 INFO L226 Difference]: Without dead ends: 117 [2025-01-09 03:30:47,021 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 179 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2025-01-09 03:30:47,022 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 13 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:30:47,022 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 294 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:30:47,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2025-01-09 03:30:47,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2025-01-09 03:30:47,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 67 states have (on average 1.1492537313432836) internal successors, (77), 72 states have internal predecessors, (77), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2025-01-09 03:30:47,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 143 transitions. [2025-01-09 03:30:47,048 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 143 transitions. Word has length 96 [2025-01-09 03:30:47,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:30:47,048 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 143 transitions. [2025-01-09 03:30:47,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 17 states have internal predecessors, (38), 13 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 13 states have call predecessors, (47), 13 states have call successors, (47) [2025-01-09 03:30:47,049 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 143 transitions. [2025-01-09 03:30:47,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-01-09 03:30:47,049 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:30:47,049 INFO L218 NwaCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:30:47,057 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 03:30:47,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:30:47,250 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:30:47,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:30:47,250 INFO L85 PathProgramCache]: Analyzing trace with hash -39767192, now seen corresponding path program 1 times [2025-01-09 03:30:47,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:30:47,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311357956] [2025-01-09 03:30:47,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:30:47,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:30:47,256 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-01-09 03:30:47,262 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-01-09 03:30:47,262 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:30:47,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:30:47,391 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 48 proven. 22 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-01-09 03:30:47,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:30:47,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311357956] [2025-01-09 03:30:47,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311357956] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:30:47,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863181015] [2025-01-09 03:30:47,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:30:47,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:30:47,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:30:47,394 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 03:30:47,395 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 03:30:47,418 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-01-09 03:30:47,439 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-01-09 03:30:47,439 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:30:47,439 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:30:47,440 INFO L256 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 03:30:47,441 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:30:47,476 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 60 proven. 10 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-01-09 03:30:47,477 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:30:47,590 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 60 proven. 10 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-01-09 03:30:47,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863181015] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:30:47,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:30:47,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 9 [2025-01-09 03:30:47,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179675845] [2025-01-09 03:30:47,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:30:47,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 03:30:47,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:30:47,591 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 03:30:47,591 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2025-01-09 03:30:47,591 INFO L87 Difference]: Start difference. First operand 117 states and 143 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 8 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2025-01-09 03:30:47,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:30:47,682 INFO L93 Difference]: Finished difference Result 123 states and 148 transitions. [2025-01-09 03:30:47,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 03:30:47,683 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 8 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) Word has length 107 [2025-01-09 03:30:47,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:30:47,684 INFO L225 Difference]: With dead ends: 123 [2025-01-09 03:30:47,684 INFO L226 Difference]: Without dead ends: 116 [2025-01-09 03:30:47,684 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 207 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2025-01-09 03:30:47,684 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 4 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:30:47,684 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 193 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:30:47,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2025-01-09 03:30:47,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 113. [2025-01-09 03:30:47,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 66 states have (on average 1.1363636363636365) internal successors, (75), 70 states have internal predecessors, (75), 31 states have call successors, (31), 15 states have call predecessors, (31), 15 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2025-01-09 03:30:47,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 136 transitions. [2025-01-09 03:30:47,706 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 136 transitions. Word has length 107 [2025-01-09 03:30:47,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:30:47,707 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 136 transitions. [2025-01-09 03:30:47,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 8 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2025-01-09 03:30:47,707 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 136 transitions. [2025-01-09 03:30:47,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2025-01-09 03:30:47,708 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:30:47,708 INFO L218 NwaCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:30:47,714 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 03:30:47,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-01-09 03:30:47,912 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:30:47,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:30:47,913 INFO L85 PathProgramCache]: Analyzing trace with hash 381927093, now seen corresponding path program 3 times [2025-01-09 03:30:47,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:30:47,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935391728] [2025-01-09 03:30:47,914 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:30:47,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:30:47,921 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 108 statements into 10 equivalence classes. [2025-01-09 03:30:47,969 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) and asserted 108 of 108 statements. [2025-01-09 03:30:47,969 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2025-01-09 03:30:47,969 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 03:30:47,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1511058352] [2025-01-09 03:30:47,970 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:30:47,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:30:47,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:30:47,972 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 03:30:47,976 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 03:30:48,002 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 108 statements into 10 equivalence classes. [2025-01-09 03:30:48,018 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 43 of 108 statements. [2025-01-09 03:30:48,019 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-01-09 03:30:48,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:30:48,020 INFO L256 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-01-09 03:30:48,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:30:48,144 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 153 proven. 41 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2025-01-09 03:30:48,144 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:30:48,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:30:48,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935391728] [2025-01-09 03:30:48,796 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 03:30:48,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511058352] [2025-01-09 03:30:48,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511058352] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:30:48,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-01-09 03:30:48,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2025-01-09 03:30:48,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084490338] [2025-01-09 03:30:48,796 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-01-09 03:30:48,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 03:30:48,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:30:48,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 03:30:48,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2025-01-09 03:30:48,797 INFO L87 Difference]: Start difference. First operand 113 states and 136 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2025-01-09 03:30:48,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:30:48,916 INFO L93 Difference]: Finished difference Result 120 states and 142 transitions. [2025-01-09 03:30:48,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 03:30:48,916 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 108 [2025-01-09 03:30:48,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:30:48,917 INFO L225 Difference]: With dead ends: 120 [2025-01-09 03:30:48,917 INFO L226 Difference]: Without dead ends: 118 [2025-01-09 03:30:48,918 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2025-01-09 03:30:48,918 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 12 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:30:48,918 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 86 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:30:48,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2025-01-09 03:30:48,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2025-01-09 03:30:48,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 69 states have (on average 1.1304347826086956) internal successors, (78), 73 states have internal predecessors, (78), 31 states have call successors, (31), 16 states have call predecessors, (31), 16 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2025-01-09 03:30:48,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 139 transitions. [2025-01-09 03:30:48,945 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 139 transitions. Word has length 108 [2025-01-09 03:30:48,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:30:48,946 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 139 transitions. [2025-01-09 03:30:48,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2025-01-09 03:30:48,946 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 139 transitions. [2025-01-09 03:30:48,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2025-01-09 03:30:48,948 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:30:48,948 INFO L218 NwaCegarLoop]: trace histogram [21, 20, 20, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:30:48,955 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 03:30:49,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-01-09 03:30:49,149 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:30:49,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:30:49,149 INFO L85 PathProgramCache]: Analyzing trace with hash -2080773213, now seen corresponding path program 3 times [2025-01-09 03:30:49,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:30:49,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958363962] [2025-01-09 03:30:49,149 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:30:49,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:30:49,153 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 119 statements into 12 equivalence classes. [2025-01-09 03:30:49,195 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 119 of 119 statements. [2025-01-09 03:30:49,195 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-01-09 03:30:49,195 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 03:30:49,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [838306790] [2025-01-09 03:30:49,196 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:30:49,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:30:49,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:30:49,198 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 03:30:49,201 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 03:30:49,223 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 119 statements into 12 equivalence classes. [2025-01-09 03:30:49,241 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 42 of 119 statements. [2025-01-09 03:30:49,241 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-01-09 03:30:49,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:30:49,242 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-01-09 03:30:49,243 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:30:49,357 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 163 proven. 50 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2025-01-09 03:30:49,358 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:30:49,512 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 691 trivial. 0 not checked. [2025-01-09 03:30:49,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:30:49,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958363962] [2025-01-09 03:30:49,513 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 03:30:49,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838306790] [2025-01-09 03:30:49,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838306790] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:30:49,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 03:30:49,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2025-01-09 03:30:49,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232948114] [2025-01-09 03:30:49,513 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 03:30:49,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-09 03:30:49,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:30:49,514 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-09 03:30:49,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2025-01-09 03:30:49,515 INFO L87 Difference]: Start difference. First operand 117 states and 139 transitions. Second operand has 16 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 7 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) [2025-01-09 03:30:49,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:30:49,724 INFO L93 Difference]: Finished difference Result 118 states and 140 transitions. [2025-01-09 03:30:49,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 03:30:49,725 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 7 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) Word has length 119 [2025-01-09 03:30:49,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:30:49,725 INFO L225 Difference]: With dead ends: 118 [2025-01-09 03:30:49,725 INFO L226 Difference]: Without dead ends: 0 [2025-01-09 03:30:49,726 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2025-01-09 03:30:49,727 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 32 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:30:49,727 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 97 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:30:49,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-01-09 03:30:49,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-01-09 03:30:49,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:30:49,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-01-09 03:30:49,728 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 119 [2025-01-09 03:30:49,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:30:49,728 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-01-09 03:30:49,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 7 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) [2025-01-09 03:30:49,728 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-01-09 03:30:49,728 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-01-09 03:30:49,730 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-01-09 03:30:49,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-01-09 03:30:49,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:30:49,934 INFO L422 BasicCegarLoop]: Path program histogram: [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:30:49,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-01-09 03:30:51,082 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-09 03:30:51,090 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 03:30:51 BoogieIcfgContainer [2025-01-09 03:30:51,090 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-09 03:30:51,090 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-09 03:30:51,090 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-09 03:30:51,091 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-09 03:30:51,092 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:30:19" (3/4) ... [2025-01-09 03:30:51,093 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-01-09 03:30:51,097 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2025-01-09 03:30:51,099 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2025-01-09 03:30:51,100 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2025-01-09 03:30:51,100 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-01-09 03:30:51,100 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-01-09 03:30:51,100 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-01-09 03:30:51,157 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-01-09 03:30:51,157 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-01-09 03:30:51,157 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-09 03:30:51,158 INFO L158 Benchmark]: Toolchain (without parser) took 31680.72ms. Allocated memory was 142.6MB in the beginning and 369.1MB in the end (delta: 226.5MB). Free memory was 113.4MB in the beginning and 201.3MB in the end (delta: -87.9MB). Peak memory consumption was 136.9MB. Max. memory is 16.1GB. [2025-01-09 03:30:51,159 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 123.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 03:30:51,159 INFO L158 Benchmark]: CACSL2BoogieTranslator took 138.90ms. Allocated memory is still 142.6MB. Free memory was 113.4MB in the beginning and 101.9MB in the end (delta: 11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 03:30:51,159 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.91ms. Allocated memory is still 142.6MB. Free memory was 101.9MB in the beginning and 101.0MB in the end (delta: 906.7kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 03:30:51,160 INFO L158 Benchmark]: Boogie Preprocessor took 23.96ms. Allocated memory is still 142.6MB. Free memory was 101.0MB in the beginning and 99.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 03:30:51,160 INFO L158 Benchmark]: RCFGBuilder took 203.21ms. Allocated memory is still 142.6MB. Free memory was 99.6MB in the beginning and 88.5MB in the end (delta: 11.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-09 03:30:51,160 INFO L158 Benchmark]: TraceAbstraction took 31223.30ms. Allocated memory was 142.6MB in the beginning and 369.1MB in the end (delta: 226.5MB). Free memory was 87.6MB in the beginning and 205.5MB in the end (delta: -117.9MB). Peak memory consumption was 188.6MB. Max. memory is 16.1GB. [2025-01-09 03:30:51,161 INFO L158 Benchmark]: Witness Printer took 67.11ms. Allocated memory is still 369.1MB. Free memory was 205.5MB in the beginning and 201.3MB in the end (delta: 4.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 03:30:51,162 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 123.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 138.90ms. Allocated memory is still 142.6MB. Free memory was 113.4MB in the beginning and 101.9MB in the end (delta: 11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.91ms. Allocated memory is still 142.6MB. Free memory was 101.9MB in the beginning and 101.0MB in the end (delta: 906.7kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.96ms. Allocated memory is still 142.6MB. Free memory was 101.0MB in the beginning and 99.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 203.21ms. Allocated memory is still 142.6MB. Free memory was 99.6MB in the beginning and 88.5MB in the end (delta: 11.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 31223.30ms. Allocated memory was 142.6MB in the beginning and 369.1MB in the end (delta: 226.5MB). Free memory was 87.6MB in the beginning and 205.5MB in the end (delta: -117.9MB). Peak memory consumption was 188.6MB. Max. memory is 16.1GB. * Witness Printer took 67.11ms. Allocated memory is still 369.1MB. Free memory was 205.5MB in the beginning and 201.3MB in the end (delta: 4.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 30.0s, OverallIterations: 16, TraceHistogramMax: 21, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 13.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 274 SdHoareTripleChecker+Valid, 4.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 221 mSDsluCounter, 2215 SdHoareTripleChecker+Invalid, 4.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1805 mSDsCounter, 479 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2542 IncrementalHoareTripleChecker+Invalid, 3021 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 479 mSolverCounterUnsat, 410 mSDtfsCounter, 2542 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1663 GetRequests, 1450 SyntacticMatches, 14 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 10.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=142occurred in iteration=12, InterpolantAutomatonStates: 153, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 16 MinimizatonAttempts, 76 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 12.8s InterpolantComputationTime, 1789 NumberOfCodeBlocks, 1647 NumberOfCodeBlocksAsserted, 60 NumberOfCheckSat, 1905 ConstructedInterpolants, 0 QuantifiedInterpolants, 16724 SizeOfPredicates, 26 NumberOfNonLiveVariables, 2004 ConjunctsInSsa, 316 ConjunctsInUnsatCore, 29 InterpolantComputations, 6 PerfectInterpolantSequences, 8759/9332 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: ((((1 <= p) && (A == ((long long) q + r))) && (d == p)) && (B == 1)) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((((d == 1) && (p == 1)) && (q == 0)) && (A == r)) && (B == 1)) || (((((2 == p) && (q == 0)) && (A == r)) && (B == 1)) && (2 == d))) || (((((p == 4) && (q == 0)) && (A == r)) && (d == 4)) && (B == 1))) || (((((8 <= p) && (q == 0)) && (A == r)) && (d == p)) && (B == 1))) RESULT: Ultimate proved your program to be correct! [2025-01-09 03:30:51,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE