./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ea9feee752dca5e5614c423318b7c590a6ae07e20bba2cfd8d20956282c64c55 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 02:36:23,982 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 02:36:24,063 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 02:36:24,069 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 02:36:24,071 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 02:36:24,096 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 02:36:24,097 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 02:36:24,098 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 02:36:24,098 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 02:36:24,098 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 02:36:24,098 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 02:36:24,098 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 02:36:24,099 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 02:36:24,099 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 02:36:24,099 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 02:36:24,099 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 02:36:24,099 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 02:36:24,099 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 02:36:24,100 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 02:36:24,100 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 02:36:24,100 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 02:36:24,100 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 02:36:24,100 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 02:36:24,100 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 02:36:24,100 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 02:36:24,100 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 02:36:24,101 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 02:36:24,101 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 02:36:24,101 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 02:36:24,101 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 02:36:24,101 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 02:36:24,101 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 02:36:24,101 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 02:36:24,101 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 02:36:24,101 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 02:36:24,101 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 02:36:24,101 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 02:36:24,101 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 02:36:24,101 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 02:36:24,102 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 02:36:24,102 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 02:36:24,102 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 02:36:24,102 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 02:36:24,102 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 -> ea9feee752dca5e5614c423318b7c590a6ae07e20bba2cfd8d20956282c64c55 [2025-02-06 02:36:24,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 02:36:24,371 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 02:36:24,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 02:36:24,377 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 02:36:24,377 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 02:36:24,379 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-1.i [2025-02-06 02:36:25,681 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fc8c4330e/681c48b4c9b443d38fb67373f4734a7a/FLAGf4643c598 [2025-02-06 02:36:26,116 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 02:36:26,117 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-1.i [2025-02-06 02:36:26,134 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fc8c4330e/681c48b4c9b443d38fb67373f4734a7a/FLAGf4643c598 [2025-02-06 02:36:26,243 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fc8c4330e/681c48b4c9b443d38fb67373f4734a7a [2025-02-06 02:36:26,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 02:36:26,247 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 02:36:26,249 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 02:36:26,249 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 02:36:26,253 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 02:36:26,253 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:36:26" (1/1) ... [2025-02-06 02:36:26,254 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4424c496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:36:26, skipping insertion in model container [2025-02-06 02:36:26,254 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:36:26" (1/1) ... [2025-02-06 02:36:26,292 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 02:36:26,437 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-1.i[915,928] [2025-02-06 02:36:26,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 02:36:26,663 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 02:36:26,671 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-1.i[915,928] [2025-02-06 02:36:26,803 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 02:36:26,826 INFO L204 MainTranslator]: Completed translation [2025-02-06 02:36:26,827 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:36:26 WrapperNode [2025-02-06 02:36:26,828 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 02:36:26,829 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 02:36:26,829 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 02:36:26,830 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 02:36:26,835 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:36:26" (1/1) ... [2025-02-06 02:36:26,871 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:36:26" (1/1) ... [2025-02-06 02:36:26,996 INFO L138 Inliner]: procedures = 26, calls = 74, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 750 [2025-02-06 02:36:26,997 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 02:36:26,997 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 02:36:26,998 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 02:36:26,998 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 02:36:27,006 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:36:26" (1/1) ... [2025-02-06 02:36:27,007 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:36:26" (1/1) ... [2025-02-06 02:36:27,032 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:36:26" (1/1) ... [2025-02-06 02:36:27,140 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-06 02:36:27,141 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:36:26" (1/1) ... [2025-02-06 02:36:27,141 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:36:26" (1/1) ... [2025-02-06 02:36:27,185 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:36:26" (1/1) ... [2025-02-06 02:36:27,194 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:36:26" (1/1) ... [2025-02-06 02:36:27,207 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:36:26" (1/1) ... [2025-02-06 02:36:27,217 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:36:26" (1/1) ... [2025-02-06 02:36:27,233 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 02:36:27,235 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 02:36:27,235 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 02:36:27,236 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 02:36:27,237 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:36:26" (1/1) ... [2025-02-06 02:36:27,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 02:36:27,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:36:27,266 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 02:36:27,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 02:36:27,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 02:36:27,338 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-06 02:36:27,338 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-06 02:36:27,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 02:36:27,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 02:36:27,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 02:36:27,494 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 02:36:27,496 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 02:36:28,748 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L616: havoc property_#t~ite49#1;havoc property_#t~bitwise47#1;havoc property_#t~bitwise48#1;havoc property_#t~ite52#1;havoc property_#t~ite51#1;havoc property_#t~bitwise50#1;havoc property_#t~short53#1;havoc property_#t~bitwise54#1;havoc property_#t~short55#1;havoc property_#t~bitwise56#1;havoc property_#t~short57#1;havoc property_#t~ite62#1;havoc property_#t~ite61#1;havoc property_#t~bitwise58#1;havoc property_#t~ite60#1;havoc property_#t~bitwise59#1;havoc property_#t~short63#1;havoc property_#t~bitwise64#1;havoc property_#t~short65#1; [2025-02-06 02:36:28,953 INFO L? ?]: Removed 98 outVars from TransFormulas that were not future-live. [2025-02-06 02:36:28,954 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 02:36:28,992 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 02:36:28,992 INFO L337 CfgBuilder]: Removed 2 assume(true) statements. [2025-02-06 02:36:28,993 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:36:28 BoogieIcfgContainer [2025-02-06 02:36:28,993 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 02:36:28,995 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 02:36:28,995 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 02:36:29,001 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 02:36:29,002 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 02:36:26" (1/3) ... [2025-02-06 02:36:29,003 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@698a70cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:36:29, skipping insertion in model container [2025-02-06 02:36:29,004 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:36:26" (2/3) ... [2025-02-06 02:36:29,005 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@698a70cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:36:29, skipping insertion in model container [2025-02-06 02:36:29,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:36:28" (3/3) ... [2025-02-06 02:36:29,006 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-1.i [2025-02-06 02:36:29,022 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 02:36:29,026 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount500_file-1.i that has 2 procedures, 296 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-06 02:36:29,102 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 02:36:29,117 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;@664d6a3a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 02:36:29,118 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-06 02:36:29,123 INFO L276 IsEmpty]: Start isEmpty. Operand has 296 states, 232 states have (on average 1.5517241379310345) internal successors, (360), 233 states have internal predecessors, (360), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2025-02-06 02:36:29,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2025-02-06 02:36:29,149 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:36:29,150 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:36:29,150 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:36:29,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:36:29,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1975581494, now seen corresponding path program 1 times [2025-02-06 02:36:29,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:36:29,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035146143] [2025-02-06 02:36:29,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:36:29,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:36:29,294 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 436 statements into 1 equivalence classes. [2025-02-06 02:36:29,357 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 436 of 436 statements. [2025-02-06 02:36:29,358 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:36:29,360 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:36:29,951 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 7200 trivial. 0 not checked. [2025-02-06 02:36:29,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:36:29,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035146143] [2025-02-06 02:36:29,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035146143] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:36:29,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750890634] [2025-02-06 02:36:29,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:36:29,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:36:29,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:36:29,958 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 02:36:29,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 02:36:30,172 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 436 statements into 1 equivalence classes. [2025-02-06 02:36:30,390 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 436 of 436 statements. [2025-02-06 02:36:30,391 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:36:30,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:36:30,398 INFO L256 TraceCheckSpWp]: Trace formula consists of 1123 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-06 02:36:30,413 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:36:30,482 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 7200 trivial. 0 not checked. [2025-02-06 02:36:30,483 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 02:36:30,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750890634] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:36:30,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 02:36:30,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-06 02:36:30,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015318221] [2025-02-06 02:36:30,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:36:30,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 02:36:30,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:36:30,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 02:36:30,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 02:36:30,517 INFO L87 Difference]: Start difference. First operand has 296 states, 232 states have (on average 1.5517241379310345) internal successors, (360), 233 states have internal predecessors, (360), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) Second operand has 2 states, 2 states have (on average 68.0) internal successors, (136), 2 states have internal predecessors, (136), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 2 states have call successors, (61) [2025-02-06 02:36:30,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:36:30,610 INFO L93 Difference]: Finished difference Result 583 states and 1014 transitions. [2025-02-06 02:36:30,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 02:36:30,612 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 68.0) internal successors, (136), 2 states have internal predecessors, (136), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 2 states have call successors, (61) Word has length 436 [2025-02-06 02:36:30,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:36:30,622 INFO L225 Difference]: With dead ends: 583 [2025-02-06 02:36:30,622 INFO L226 Difference]: Without dead ends: 290 [2025-02-06 02:36:30,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 437 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 02:36:30,633 INFO L435 NwaCegarLoop]: 453 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 02:36:30,634 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 453 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 02:36:30,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2025-02-06 02:36:30,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2025-02-06 02:36:30,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 227 states have (on average 1.52863436123348) internal successors, (347), 227 states have internal predecessors, (347), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2025-02-06 02:36:30,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 469 transitions. [2025-02-06 02:36:30,707 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 469 transitions. Word has length 436 [2025-02-06 02:36:30,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:36:30,709 INFO L471 AbstractCegarLoop]: Abstraction has 290 states and 469 transitions. [2025-02-06 02:36:30,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 68.0) internal successors, (136), 2 states have internal predecessors, (136), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 2 states have call successors, (61) [2025-02-06 02:36:30,710 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 469 transitions. [2025-02-06 02:36:30,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2025-02-06 02:36:30,724 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:36:30,724 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:36:30,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 02:36:30,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-02-06 02:36:30,925 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:36:30,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:36:30,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1660174387, now seen corresponding path program 1 times [2025-02-06 02:36:30,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:36:30,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250893048] [2025-02-06 02:36:30,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:36:30,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:36:30,996 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 436 statements into 1 equivalence classes. [2025-02-06 02:36:31,870 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 436 of 436 statements. [2025-02-06 02:36:31,870 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:36:31,870 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:36:33,643 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2025-02-06 02:36:33,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:36:33,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250893048] [2025-02-06 02:36:33,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250893048] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:36:33,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:36:33,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 02:36:33,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098445726] [2025-02-06 02:36:33,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:36:33,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 02:36:33,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:36:33,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 02:36:33,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-06 02:36:33,649 INFO L87 Difference]: Start difference. First operand 290 states and 469 transitions. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 3 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2025-02-06 02:36:34,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:36:34,333 INFO L93 Difference]: Finished difference Result 750 states and 1211 transitions. [2025-02-06 02:36:34,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 02:36:34,334 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 3 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) Word has length 436 [2025-02-06 02:36:34,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:36:34,341 INFO L225 Difference]: With dead ends: 750 [2025-02-06 02:36:34,341 INFO L226 Difference]: Without dead ends: 463 [2025-02-06 02:36:34,346 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-06 02:36:34,347 INFO L435 NwaCegarLoop]: 491 mSDtfsCounter, 1014 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-06 02:36:34,347 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1014 Valid, 784 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-06 02:36:34,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2025-02-06 02:36:34,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 460. [2025-02-06 02:36:34,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 378 states have (on average 1.5423280423280423) internal successors, (583), 379 states have internal predecessors, (583), 79 states have call successors, (79), 2 states have call predecessors, (79), 2 states have return successors, (79), 78 states have call predecessors, (79), 79 states have call successors, (79) [2025-02-06 02:36:34,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 741 transitions. [2025-02-06 02:36:34,416 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 741 transitions. Word has length 436 [2025-02-06 02:36:34,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:36:34,417 INFO L471 AbstractCegarLoop]: Abstraction has 460 states and 741 transitions. [2025-02-06 02:36:34,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 3 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2025-02-06 02:36:34,418 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 741 transitions. [2025-02-06 02:36:34,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2025-02-06 02:36:34,425 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:36:34,425 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:36:34,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 02:36:34,426 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:36:34,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:36:34,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1940524276, now seen corresponding path program 1 times [2025-02-06 02:36:34,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:36:34,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057113635] [2025-02-06 02:36:34,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:36:34,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:36:34,509 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 436 statements into 1 equivalence classes. [2025-02-06 02:36:35,118 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 436 of 436 statements. [2025-02-06 02:36:35,120 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:36:35,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:36:36,070 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2025-02-06 02:36:36,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:36:36,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057113635] [2025-02-06 02:36:36,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057113635] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:36:36,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:36:36,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 02:36:36,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121759705] [2025-02-06 02:36:36,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:36:36,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 02:36:36,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:36:36,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 02:36:36,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 02:36:36,078 INFO L87 Difference]: Start difference. First operand 460 states and 741 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2025-02-06 02:36:36,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:36:36,287 INFO L93 Difference]: Finished difference Result 1220 states and 1968 transitions. [2025-02-06 02:36:36,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 02:36:36,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 436 [2025-02-06 02:36:36,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:36:36,297 INFO L225 Difference]: With dead ends: 1220 [2025-02-06 02:36:36,298 INFO L226 Difference]: Without dead ends: 763 [2025-02-06 02:36:36,300 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 02:36:36,301 INFO L435 NwaCegarLoop]: 592 mSDtfsCounter, 264 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 02:36:36,302 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 1438 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 02:36:36,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2025-02-06 02:36:36,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 551. [2025-02-06 02:36:36,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 469 states have (on average 1.5692963752665245) internal successors, (736), 470 states have internal predecessors, (736), 79 states have call successors, (79), 2 states have call predecessors, (79), 2 states have return successors, (79), 78 states have call predecessors, (79), 79 states have call successors, (79) [2025-02-06 02:36:36,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 894 transitions. [2025-02-06 02:36:36,377 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 894 transitions. Word has length 436 [2025-02-06 02:36:36,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:36:36,379 INFO L471 AbstractCegarLoop]: Abstraction has 551 states and 894 transitions. [2025-02-06 02:36:36,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2025-02-06 02:36:36,380 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 894 transitions. [2025-02-06 02:36:36,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2025-02-06 02:36:36,384 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:36:36,384 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:36:36,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 02:36:36,385 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:36:36,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:36:36,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1950640542, now seen corresponding path program 1 times [2025-02-06 02:36:36,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:36:36,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960808343] [2025-02-06 02:36:36,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:36:36,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:36:36,432 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 437 statements into 1 equivalence classes. [2025-02-06 02:36:37,192 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 437 of 437 statements. [2025-02-06 02:36:37,192 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:36:37,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:36:38,006 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2025-02-06 02:36:38,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:36:38,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960808343] [2025-02-06 02:36:38,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960808343] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:36:38,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:36:38,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 02:36:38,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676548207] [2025-02-06 02:36:38,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:36:38,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 02:36:38,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:36:38,009 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 02:36:38,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 02:36:38,009 INFO L87 Difference]: Start difference. First operand 551 states and 894 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2025-02-06 02:36:38,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:36:38,115 INFO L93 Difference]: Finished difference Result 1101 states and 1788 transitions. [2025-02-06 02:36:38,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 02:36:38,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 437 [2025-02-06 02:36:38,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:36:38,122 INFO L225 Difference]: With dead ends: 1101 [2025-02-06 02:36:38,124 INFO L226 Difference]: Without dead ends: 553 [2025-02-06 02:36:38,125 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 02:36:38,128 INFO L435 NwaCegarLoop]: 451 mSDtfsCounter, 0 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 02:36:38,129 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1346 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 02:36:38,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2025-02-06 02:36:38,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2025-02-06 02:36:38,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 471 states have (on average 1.5668789808917198) internal successors, (738), 472 states have internal predecessors, (738), 79 states have call successors, (79), 2 states have call predecessors, (79), 2 states have return successors, (79), 78 states have call predecessors, (79), 79 states have call successors, (79) [2025-02-06 02:36:38,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 896 transitions. [2025-02-06 02:36:38,200 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 896 transitions. Word has length 437 [2025-02-06 02:36:38,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:36:38,201 INFO L471 AbstractCegarLoop]: Abstraction has 553 states and 896 transitions. [2025-02-06 02:36:38,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2025-02-06 02:36:38,202 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 896 transitions. [2025-02-06 02:36:38,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2025-02-06 02:36:38,207 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:36:38,208 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:36:38,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 02:36:38,208 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:36:38,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:36:38,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1059369162, now seen corresponding path program 1 times [2025-02-06 02:36:38,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:36:38,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358107878] [2025-02-06 02:36:38,210 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:36:38,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:36:38,253 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 438 statements into 1 equivalence classes. [2025-02-06 02:36:38,943 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 438 of 438 statements. [2025-02-06 02:36:38,943 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:36:38,943 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:36:39,776 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2025-02-06 02:36:39,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:36:39,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358107878] [2025-02-06 02:36:39,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358107878] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:36:39,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:36:39,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 02:36:39,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447734737] [2025-02-06 02:36:39,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:36:39,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 02:36:39,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:36:39,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 02:36:39,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 02:36:39,781 INFO L87 Difference]: Start difference. First operand 553 states and 896 transitions. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2025-02-06 02:36:40,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:36:40,342 INFO L93 Difference]: Finished difference Result 1876 states and 3029 transitions. [2025-02-06 02:36:40,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 02:36:40,343 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 438 [2025-02-06 02:36:40,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:36:40,355 INFO L225 Difference]: With dead ends: 1876 [2025-02-06 02:36:40,355 INFO L226 Difference]: Without dead ends: 1326 [2025-02-06 02:36:40,357 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-02-06 02:36:40,359 INFO L435 NwaCegarLoop]: 597 mSDtfsCounter, 645 mSDsluCounter, 1460 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 2057 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 02:36:40,360 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 2057 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 02:36:40,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2025-02-06 02:36:40,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1102. [2025-02-06 02:36:40,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 939 states have (on average 1.5686900958466454) internal successors, (1473), 941 states have internal predecessors, (1473), 158 states have call successors, (158), 4 states have call predecessors, (158), 4 states have return successors, (158), 156 states have call predecessors, (158), 158 states have call successors, (158) [2025-02-06 02:36:40,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1789 transitions. [2025-02-06 02:36:40,484 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1789 transitions. Word has length 438 [2025-02-06 02:36:40,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:36:40,486 INFO L471 AbstractCegarLoop]: Abstraction has 1102 states and 1789 transitions. [2025-02-06 02:36:40,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2025-02-06 02:36:40,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1789 transitions. [2025-02-06 02:36:40,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2025-02-06 02:36:40,490 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:36:40,491 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:36:40,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 02:36:40,491 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:36:40,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:36:40,493 INFO L85 PathProgramCache]: Analyzing trace with hash -149873077, now seen corresponding path program 1 times [2025-02-06 02:36:40,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:36:40,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733628094] [2025-02-06 02:36:40,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:36:40,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:36:40,539 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 438 statements into 1 equivalence classes. [2025-02-06 02:36:40,671 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 438 of 438 statements. [2025-02-06 02:36:40,672 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:36:40,672 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:36:42,226 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2025-02-06 02:36:42,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:36:42,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733628094] [2025-02-06 02:36:42,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733628094] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:36:42,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:36:42,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 02:36:42,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831377738] [2025-02-06 02:36:42,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:36:42,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 02:36:42,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:36:42,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 02:36:42,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 02:36:42,229 INFO L87 Difference]: Start difference. First operand 1102 states and 1789 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2025-02-06 02:36:42,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:36:42,563 INFO L93 Difference]: Finished difference Result 3300 states and 5361 transitions. [2025-02-06 02:36:42,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 02:36:42,564 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 438 [2025-02-06 02:36:42,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:36:42,580 INFO L225 Difference]: With dead ends: 3300 [2025-02-06 02:36:42,580 INFO L226 Difference]: Without dead ends: 2201 [2025-02-06 02:36:42,584 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 02:36:42,584 INFO L435 NwaCegarLoop]: 656 mSDtfsCounter, 459 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 1498 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 02:36:42,585 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 1498 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 02:36:42,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2201 states. [2025-02-06 02:36:42,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2201 to 2199. [2025-02-06 02:36:42,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2199 states, 1874 states have (on average 1.5656350053361794) internal successors, (2934), 1878 states have internal predecessors, (2934), 316 states have call successors, (316), 8 states have call predecessors, (316), 8 states have return successors, (316), 312 states have call predecessors, (316), 316 states have call successors, (316) [2025-02-06 02:36:42,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2199 states to 2199 states and 3566 transitions. [2025-02-06 02:36:42,844 INFO L78 Accepts]: Start accepts. Automaton has 2199 states and 3566 transitions. Word has length 438 [2025-02-06 02:36:42,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:36:42,845 INFO L471 AbstractCegarLoop]: Abstraction has 2199 states and 3566 transitions. [2025-02-06 02:36:42,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2025-02-06 02:36:42,846 INFO L276 IsEmpty]: Start isEmpty. Operand 2199 states and 3566 transitions. [2025-02-06 02:36:42,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2025-02-06 02:36:42,852 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:36:42,853 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:36:42,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 02:36:42,853 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:36:42,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:36:42,854 INFO L85 PathProgramCache]: Analyzing trace with hash -760275677, now seen corresponding path program 1 times [2025-02-06 02:36:42,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:36:42,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453578981] [2025-02-06 02:36:42,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:36:42,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:36:42,919 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 439 statements into 1 equivalence classes. [2025-02-06 02:36:45,709 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 439 of 439 statements. [2025-02-06 02:36:45,709 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:36:45,709 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:36:49,025 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2025-02-06 02:36:49,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:36:49,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453578981] [2025-02-06 02:36:49,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453578981] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:36:49,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:36:49,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 02:36:49,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868163841] [2025-02-06 02:36:49,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:36:49,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 02:36:49,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:36:49,027 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 02:36:49,028 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-02-06 02:36:49,028 INFO L87 Difference]: Start difference. First operand 2199 states and 3566 transitions. Second operand has 9 states, 9 states have (on average 15.222222222222221) internal successors, (137), 9 states have internal predecessors, (137), 3 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2025-02-06 02:36:52,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:36:52,050 INFO L93 Difference]: Finished difference Result 8564 states and 13791 transitions. [2025-02-06 02:36:52,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 02:36:52,051 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.222222222222221) internal successors, (137), 9 states have internal predecessors, (137), 3 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) Word has length 439 [2025-02-06 02:36:52,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:36:52,089 INFO L225 Difference]: With dead ends: 8564 [2025-02-06 02:36:52,090 INFO L226 Difference]: Without dead ends: 6368 [2025-02-06 02:36:52,100 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2025-02-06 02:36:52,102 INFO L435 NwaCegarLoop]: 471 mSDtfsCounter, 2396 mSDsluCounter, 2177 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 341 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2396 SdHoareTripleChecker+Valid, 2648 SdHoareTripleChecker+Invalid, 1060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 341 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-02-06 02:36:52,102 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2396 Valid, 2648 Invalid, 1060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [341 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-02-06 02:36:52,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6368 states. [2025-02-06 02:36:52,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6368 to 4176. [2025-02-06 02:36:52,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4176 states, 3787 states have (on average 1.5854238183258516) internal successors, (6004), 3791 states have internal predecessors, (6004), 377 states have call successors, (377), 11 states have call predecessors, (377), 11 states have return successors, (377), 373 states have call predecessors, (377), 377 states have call successors, (377) [2025-02-06 02:36:52,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4176 states to 4176 states and 6758 transitions. [2025-02-06 02:36:52,401 INFO L78 Accepts]: Start accepts. Automaton has 4176 states and 6758 transitions. Word has length 439 [2025-02-06 02:36:52,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:36:52,403 INFO L471 AbstractCegarLoop]: Abstraction has 4176 states and 6758 transitions. [2025-02-06 02:36:52,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.222222222222221) internal successors, (137), 9 states have internal predecessors, (137), 3 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2025-02-06 02:36:52,403 INFO L276 IsEmpty]: Start isEmpty. Operand 4176 states and 6758 transitions. [2025-02-06 02:36:52,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2025-02-06 02:36:52,410 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:36:52,410 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:36:52,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 02:36:52,410 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:36:52,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:36:52,411 INFO L85 PathProgramCache]: Analyzing trace with hash 82633671, now seen corresponding path program 1 times [2025-02-06 02:36:52,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:36:52,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747007289] [2025-02-06 02:36:52,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:36:52,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:36:52,450 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 439 statements into 1 equivalence classes. [2025-02-06 02:36:53,746 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 439 of 439 statements. [2025-02-06 02:36:53,747 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:36:53,747 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:36:54,204 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 3 proven. 177 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2025-02-06 02:36:54,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:36:54,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747007289] [2025-02-06 02:36:54,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747007289] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:36:54,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942252393] [2025-02-06 02:36:54,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:36:54,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:36:54,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:36:54,208 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 02:36:54,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 02:36:54,377 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 439 statements into 1 equivalence classes. [2025-02-06 02:36:54,523 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 439 of 439 statements. [2025-02-06 02:36:54,523 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:36:54,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:36:54,529 INFO L256 TraceCheckSpWp]: Trace formula consists of 1122 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 02:36:54,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:36:55,595 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 3907 proven. 198 refuted. 0 times theorem prover too weak. 3215 trivial. 0 not checked. [2025-02-06 02:36:55,595 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:36:56,153 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 156 proven. 201 refuted. 0 times theorem prover too weak. 6963 trivial. 0 not checked. [2025-02-06 02:36:56,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942252393] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:36:56,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:36:56,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 15 [2025-02-06 02:36:56,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014782493] [2025-02-06 02:36:56,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:36:56,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-06 02:36:56,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:36:56,156 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-06 02:36:56,156 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2025-02-06 02:36:56,156 INFO L87 Difference]: Start difference. First operand 4176 states and 6758 transitions. Second operand has 15 states, 15 states have (on average 17.2) internal successors, (258), 15 states have internal predecessors, (258), 6 states have call successors, (155), 3 states have call predecessors, (155), 7 states have return successors, (157), 6 states have call predecessors, (157), 6 states have call successors, (157) [2025-02-06 02:36:57,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:36:57,143 INFO L93 Difference]: Finished difference Result 7644 states and 12216 transitions. [2025-02-06 02:36:57,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-06 02:36:57,144 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 17.2) internal successors, (258), 15 states have internal predecessors, (258), 6 states have call successors, (155), 3 states have call predecessors, (155), 7 states have return successors, (157), 6 states have call predecessors, (157), 6 states have call successors, (157) Word has length 439 [2025-02-06 02:36:57,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:36:57,166 INFO L225 Difference]: With dead ends: 7644 [2025-02-06 02:36:57,167 INFO L226 Difference]: Without dead ends: 3660 [2025-02-06 02:36:57,176 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 899 GetRequests, 870 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=275, Invalid=655, Unknown=0, NotChecked=0, Total=930 [2025-02-06 02:36:57,178 INFO L435 NwaCegarLoop]: 346 mSDtfsCounter, 876 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-06 02:36:57,178 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 1204 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-06 02:36:57,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3660 states. [2025-02-06 02:36:57,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3660 to 3572. [2025-02-06 02:36:57,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3572 states, 3164 states have (on average 1.5414032869785081) internal successors, (4877), 3168 states have internal predecessors, (4877), 377 states have call successors, (377), 30 states have call predecessors, (377), 30 states have return successors, (377), 373 states have call predecessors, (377), 377 states have call successors, (377) [2025-02-06 02:36:57,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3572 states to 3572 states and 5631 transitions. [2025-02-06 02:36:57,482 INFO L78 Accepts]: Start accepts. Automaton has 3572 states and 5631 transitions. Word has length 439 [2025-02-06 02:36:57,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:36:57,483 INFO L471 AbstractCegarLoop]: Abstraction has 3572 states and 5631 transitions. [2025-02-06 02:36:57,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 17.2) internal successors, (258), 15 states have internal predecessors, (258), 6 states have call successors, (155), 3 states have call predecessors, (155), 7 states have return successors, (157), 6 states have call predecessors, (157), 6 states have call successors, (157) [2025-02-06 02:36:57,484 INFO L276 IsEmpty]: Start isEmpty. Operand 3572 states and 5631 transitions. [2025-02-06 02:36:57,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2025-02-06 02:36:57,489 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:36:57,489 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:36:57,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 02:36:57,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:36:57,691 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:36:57,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:36:57,692 INFO L85 PathProgramCache]: Analyzing trace with hash -146127505, now seen corresponding path program 1 times [2025-02-06 02:36:57,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:36:57,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665742648] [2025-02-06 02:36:57,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:36:57,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:36:57,724 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 439 statements into 1 equivalence classes. [2025-02-06 02:36:58,062 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 439 of 439 statements. [2025-02-06 02:36:58,062 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:36:58,063 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:36:59,293 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2025-02-06 02:36:59,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:36:59,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665742648] [2025-02-06 02:36:59,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665742648] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:36:59,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:36:59,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 02:36:59,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631243337] [2025-02-06 02:36:59,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:36:59,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 02:36:59,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:36:59,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 02:36:59,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 02:36:59,298 INFO L87 Difference]: Start difference. First operand 3572 states and 5631 transitions. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2025-02-06 02:36:59,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:36:59,831 INFO L93 Difference]: Finished difference Result 11848 states and 18652 transitions. [2025-02-06 02:36:59,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 02:36:59,831 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 439 [2025-02-06 02:36:59,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:36:59,871 INFO L225 Difference]: With dead ends: 11848 [2025-02-06 02:36:59,871 INFO L226 Difference]: Without dead ends: 9336 [2025-02-06 02:36:59,880 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-02-06 02:36:59,881 INFO L435 NwaCegarLoop]: 458 mSDtfsCounter, 1023 mSDsluCounter, 1782 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 2240 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 02:36:59,881 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1023 Valid, 2240 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 02:36:59,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9336 states. [2025-02-06 02:37:00,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9336 to 9236. [2025-02-06 02:37:00,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9236 states, 8716 states have (on average 1.565511702615879) internal successors, (13645), 8736 states have internal predecessors, (13645), 457 states have call successors, (457), 62 states have call predecessors, (457), 62 states have return successors, (457), 437 states have call predecessors, (457), 457 states have call successors, (457) [2025-02-06 02:37:00,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9236 states to 9236 states and 14559 transitions. [2025-02-06 02:37:00,287 INFO L78 Accepts]: Start accepts. Automaton has 9236 states and 14559 transitions. Word has length 439 [2025-02-06 02:37:00,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:37:00,288 INFO L471 AbstractCegarLoop]: Abstraction has 9236 states and 14559 transitions. [2025-02-06 02:37:00,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2025-02-06 02:37:00,289 INFO L276 IsEmpty]: Start isEmpty. Operand 9236 states and 14559 transitions. [2025-02-06 02:37:00,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2025-02-06 02:37:00,300 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:37:00,300 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:37:00,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 02:37:00,300 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:37:00,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:37:00,301 INFO L85 PathProgramCache]: Analyzing trace with hash -990599376, now seen corresponding path program 1 times [2025-02-06 02:37:00,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:37:00,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169177430] [2025-02-06 02:37:00,301 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:37:00,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:37:00,372 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 439 statements into 1 equivalence classes. [2025-02-06 02:37:01,653 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 439 of 439 statements. [2025-02-06 02:37:01,654 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:37:01,654 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:37:02,039 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 12 proven. 168 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2025-02-06 02:37:02,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:37:02,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169177430] [2025-02-06 02:37:02,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169177430] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:37:02,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563828739] [2025-02-06 02:37:02,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:37:02,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:37:02,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:37:02,043 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 02:37:02,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 02:37:02,229 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 439 statements into 1 equivalence classes. [2025-02-06 02:37:02,376 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 439 of 439 statements. [2025-02-06 02:37:02,376 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:37:02,376 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:37:02,383 INFO L256 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 02:37:02,391 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:37:02,463 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2025-02-06 02:37:02,463 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 02:37:02,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563828739] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:37:02,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 02:37:02,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2025-02-06 02:37:02,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988012911] [2025-02-06 02:37:02,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:37:02,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 02:37:02,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:37:02,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 02:37:02,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 02:37:02,466 INFO L87 Difference]: Start difference. First operand 9236 states and 14559 transitions. Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 1 states have call successors, (61), 1 states have call predecessors, (61), 2 states have return successors, (61), 2 states have call predecessors, (61), 1 states have call successors, (61) [2025-02-06 02:37:03,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:37:03,087 INFO L93 Difference]: Finished difference Result 18348 states and 28879 transitions. [2025-02-06 02:37:03,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 02:37:03,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 1 states have call successors, (61), 1 states have call predecessors, (61), 2 states have return successors, (61), 2 states have call predecessors, (61), 1 states have call successors, (61) Word has length 439 [2025-02-06 02:37:03,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:37:03,134 INFO L225 Difference]: With dead ends: 18348 [2025-02-06 02:37:03,134 INFO L226 Difference]: Without dead ends: 9368 [2025-02-06 02:37:03,149 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-02-06 02:37:03,150 INFO L435 NwaCegarLoop]: 379 mSDtfsCounter, 375 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 02:37:03,150 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 1016 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 02:37:03,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9368 states. [2025-02-06 02:37:03,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9368 to 9256. [2025-02-06 02:37:03,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9256 states, 8731 states have (on average 1.5617913182911465) internal successors, (13636), 8751 states have internal predecessors, (13636), 457 states have call successors, (457), 67 states have call predecessors, (457), 67 states have return successors, (457), 437 states have call predecessors, (457), 457 states have call successors, (457) [2025-02-06 02:37:03,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9256 states to 9256 states and 14550 transitions. [2025-02-06 02:37:03,576 INFO L78 Accepts]: Start accepts. Automaton has 9256 states and 14550 transitions. Word has length 439 [2025-02-06 02:37:03,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:37:03,577 INFO L471 AbstractCegarLoop]: Abstraction has 9256 states and 14550 transitions. [2025-02-06 02:37:03,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 1 states have call successors, (61), 1 states have call predecessors, (61), 2 states have return successors, (61), 2 states have call predecessors, (61), 1 states have call successors, (61) [2025-02-06 02:37:03,578 INFO L276 IsEmpty]: Start isEmpty. Operand 9256 states and 14550 transitions. [2025-02-06 02:37:03,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2025-02-06 02:37:03,589 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:37:03,589 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:37:03,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 02:37:03,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:37:03,793 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:37:03,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:37:03,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1474274703, now seen corresponding path program 1 times [2025-02-06 02:37:03,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:37:03,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043317038] [2025-02-06 02:37:03,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:37:03,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:37:03,824 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 439 statements into 1 equivalence classes. [2025-02-06 02:37:04,765 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 439 of 439 statements. [2025-02-06 02:37:04,765 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:37:04,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:37:05,228 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 12 proven. 168 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2025-02-06 02:37:05,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:37:05,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043317038] [2025-02-06 02:37:05,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043317038] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:37:05,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932007433] [2025-02-06 02:37:05,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:37:05,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:37:05,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:37:05,231 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 02:37:05,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 02:37:05,424 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 439 statements into 1 equivalence classes. [2025-02-06 02:37:05,581 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 439 of 439 statements. [2025-02-06 02:37:05,581 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:37:05,581 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:37:05,586 INFO L256 TraceCheckSpWp]: Trace formula consists of 1129 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 02:37:05,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:37:05,925 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 3120 proven. 126 refuted. 0 times theorem prover too weak. 4074 trivial. 0 not checked. [2025-02-06 02:37:05,927 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:37:06,255 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 54 proven. 126 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2025-02-06 02:37:06,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932007433] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:37:06,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:37:06,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-02-06 02:37:06,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600226179] [2025-02-06 02:37:06,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:37:06,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 02:37:06,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:37:06,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 02:37:06,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-06 02:37:06,258 INFO L87 Difference]: Start difference. First operand 9256 states and 14550 transitions. Second operand has 9 states, 9 states have (on average 30.333333333333332) internal successors, (273), 9 states have internal predecessors, (273), 4 states have call successors, (159), 2 states have call predecessors, (159), 4 states have return successors, (161), 4 states have call predecessors, (161), 4 states have call successors, (161) [2025-02-06 02:37:07,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:37:07,045 INFO L93 Difference]: Finished difference Result 15450 states and 24179 transitions. [2025-02-06 02:37:07,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 02:37:07,046 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 30.333333333333332) internal successors, (273), 9 states have internal predecessors, (273), 4 states have call successors, (159), 2 states have call predecessors, (159), 4 states have return successors, (161), 4 states have call predecessors, (161), 4 states have call successors, (161) Word has length 439 [2025-02-06 02:37:07,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:37:07,070 INFO L225 Difference]: With dead ends: 15450 [2025-02-06 02:37:07,070 INFO L226 Difference]: Without dead ends: 6614 [2025-02-06 02:37:07,085 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 891 GetRequests, 875 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2025-02-06 02:37:07,086 INFO L435 NwaCegarLoop]: 354 mSDtfsCounter, 840 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-06 02:37:07,087 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 940 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-06 02:37:07,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6614 states. [2025-02-06 02:37:07,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6614 to 6528. [2025-02-06 02:37:07,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6528 states, 6029 states have (on average 1.5451982086581522) internal successors, (9316), 6041 states have internal predecessors, (9316), 425 states have call successors, (425), 73 states have call predecessors, (425), 73 states have return successors, (425), 413 states have call predecessors, (425), 425 states have call successors, (425) [2025-02-06 02:37:07,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6528 states to 6528 states and 10166 transitions. [2025-02-06 02:37:07,500 INFO L78 Accepts]: Start accepts. Automaton has 6528 states and 10166 transitions. Word has length 439 [2025-02-06 02:37:07,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:37:07,501 INFO L471 AbstractCegarLoop]: Abstraction has 6528 states and 10166 transitions. [2025-02-06 02:37:07,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 30.333333333333332) internal successors, (273), 9 states have internal predecessors, (273), 4 states have call successors, (159), 2 states have call predecessors, (159), 4 states have return successors, (161), 4 states have call predecessors, (161), 4 states have call successors, (161) [2025-02-06 02:37:07,501 INFO L276 IsEmpty]: Start isEmpty. Operand 6528 states and 10166 transitions. [2025-02-06 02:37:07,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2025-02-06 02:37:07,510 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:37:07,511 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:37:07,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 02:37:07,711 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,SelfDestructingSolverStorable10 [2025-02-06 02:37:07,712 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:37:07,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:37:07,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1930151129, now seen corresponding path program 1 times [2025-02-06 02:37:07,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:37:07,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536049937] [2025-02-06 02:37:07,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:37:07,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:37:07,740 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 440 statements into 1 equivalence classes. [2025-02-06 02:37:08,601 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 440 of 440 statements. [2025-02-06 02:37:08,601 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:37:08,601 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat