./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.UNBOUNDED.pals+Problem12_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.UNBOUNDED.pals+Problem12_label01.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 272b3043f09316c047f463055e9dbcfdf1c025e53c890089a4364bf99a816657 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 07:26:48,582 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 07:26:48,639 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 07:26:48,645 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 07:26:48,647 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 07:26:48,660 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 07:26:48,661 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 07:26:48,661 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 07:26:48,661 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 07:26:48,662 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 07:26:48,662 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 07:26:48,662 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 07:26:48,662 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 07:26:48,662 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 07:26:48,662 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 07:26:48,662 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 07:26:48,662 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 07:26:48,662 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 07:26:48,663 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 07:26:48,663 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 07:26:48,664 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 07:26:48,664 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 07:26:48,664 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 07:26:48,664 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 07:26:48,664 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 07:26:48,664 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 07:26:48,664 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 07:26:48,664 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 07:26:48,664 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 07:26:48,665 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 07:26:48,665 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 07:26:48,665 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 07:26:48,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 07:26:48,665 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 07:26:48,665 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 07:26:48,665 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 07:26:48,665 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 07:26:48,665 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 07:26:48,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 07:26:48,665 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 07:26:48,665 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 07:26:48,665 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 07:26:48,666 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 07:26:48,666 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/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 -> 272b3043f09316c047f463055e9dbcfdf1c025e53c890089a4364bf99a816657 [2025-03-08 07:26:48,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 07:26:48,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 07:26:48,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 07:26:48,902 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 07:26:48,902 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 07:26:48,905 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.UNBOUNDED.pals+Problem12_label01.c [2025-03-08 07:26:50,066 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fb37d4e0/f779f70eb0544dec9d53230fe365f113/FLAG1bf9c4bfc [2025-03-08 07:26:50,526 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 07:26:50,526 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.UNBOUNDED.pals+Problem12_label01.c [2025-03-08 07:26:50,552 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fb37d4e0/f779f70eb0544dec9d53230fe365f113/FLAG1bf9c4bfc [2025-03-08 07:26:50,642 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fb37d4e0/f779f70eb0544dec9d53230fe365f113 [2025-03-08 07:26:50,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 07:26:50,645 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 07:26:50,645 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 07:26:50,646 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 07:26:50,648 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 07:26:50,649 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 07:26:50" (1/1) ... [2025-03-08 07:26:50,649 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32eb0d64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:26:50, skipping insertion in model container [2025-03-08 07:26:50,649 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 07:26:50" (1/1) ... [2025-03-08 07:26:50,722 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 07:26:51,044 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.UNBOUNDED.pals+Problem12_label01.c[20491,20504] [2025-03-08 07:26:51,091 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.UNBOUNDED.pals+Problem12_label01.c[26046,26059] [2025-03-08 07:26:51,453 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 07:26:51,468 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 07:26:51,499 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.UNBOUNDED.pals+Problem12_label01.c[20491,20504] [2025-03-08 07:26:51,503 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.UNBOUNDED.pals+Problem12_label01.c[26046,26059] [2025-03-08 07:26:51,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 07:26:51,765 INFO L204 MainTranslator]: Completed translation [2025-03-08 07:26:51,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:26:51 WrapperNode [2025-03-08 07:26:51,766 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 07:26:51,767 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 07:26:51,767 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 07:26:51,767 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 07:26:51,771 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:26:51" (1/1) ... [2025-03-08 07:26:51,823 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:26:51" (1/1) ... [2025-03-08 07:26:52,103 INFO L138 Inliner]: procedures = 39, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5214 [2025-03-08 07:26:52,104 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 07:26:52,105 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 07:26:52,105 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 07:26:52,105 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 07:26:52,112 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:26:51" (1/1) ... [2025-03-08 07:26:52,113 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:26:51" (1/1) ... [2025-03-08 07:26:52,156 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:26:51" (1/1) ... [2025-03-08 07:26:52,262 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]. [2025-03-08 07:26:52,263 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:26:51" (1/1) ... [2025-03-08 07:26:52,263 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:26:51" (1/1) ... [2025-03-08 07:26:52,419 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:26:51" (1/1) ... [2025-03-08 07:26:52,450 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:26:51" (1/1) ... [2025-03-08 07:26:52,473 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:26:51" (1/1) ... [2025-03-08 07:26:52,488 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:26:51" (1/1) ... [2025-03-08 07:26:52,526 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 07:26:52,528 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 07:26:52,528 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 07:26:52,528 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 07:26:52,529 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:26:51" (1/1) ... [2025-03-08 07:26:52,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 07:26:52,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:26:52,559 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 07:26:52,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 07:26:52,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 07:26:52,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 07:26:52,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 07:26:52,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 07:26:52,686 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 07:26:52,688 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 07:26:56,131 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L5258: havoc calculate_output3_#t~ret47#1; [2025-03-08 07:26:56,132 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2289: havoc calculate_output_#t~ret45#1; [2025-03-08 07:26:56,132 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3768: havoc calculate_output2_#t~ret46#1; [2025-03-08 07:26:56,219 INFO L? ?]: Removed 754 outVars from TransFormulas that were not future-live. [2025-03-08 07:26:56,220 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 07:26:56,242 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 07:26:56,244 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 07:26:56,244 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 07:26:56 BoogieIcfgContainer [2025-03-08 07:26:56,244 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 07:26:56,246 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 07:26:56,247 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 07:26:56,250 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 07:26:56,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 07:26:50" (1/3) ... [2025-03-08 07:26:56,251 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56d71e28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 07:26:56, skipping insertion in model container [2025-03-08 07:26:56,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:26:51" (2/3) ... [2025-03-08 07:26:56,252 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56d71e28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 07:26:56, skipping insertion in model container [2025-03-08 07:26:56,252 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 07:26:56" (3/3) ... [2025-03-08 07:26:56,253 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals+Problem12_label01.c [2025-03-08 07:26:56,265 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 07:26:56,268 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals+Problem12_label01.c that has 1 procedures, 931 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-03-08 07:26:56,333 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 07:26:56,346 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;@40250de3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 07:26:56,347 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-08 07:26:56,354 INFO L276 IsEmpty]: Start isEmpty. Operand has 931 states, 928 states have (on average 1.9019396551724137) internal successors, (1765), 930 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:26:56,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-03-08 07:26:56,361 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:26:56,361 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:26:56,361 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:26:56,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:26:56,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1710653810, now seen corresponding path program 1 times [2025-03-08 07:26:56,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:26:56,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335716578] [2025-03-08 07:26:56,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:26:56,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:26:56,438 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-08 07:26:56,488 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-08 07:26:56,490 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:26:56,490 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:26:56,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:26:56,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:26:56,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335716578] [2025-03-08 07:26:56,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335716578] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:26:56,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:26:56,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 07:26:56,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405266464] [2025-03-08 07:26:56,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:26:56,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 07:26:56,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:26:56,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 07:26:56,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 07:26:56,607 INFO L87 Difference]: Start difference. First operand has 931 states, 928 states have (on average 1.9019396551724137) internal successors, (1765), 930 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:26:56,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:26:56,676 INFO L93 Difference]: Finished difference Result 1805 states and 3421 transitions. [2025-03-08 07:26:56,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 07:26:56,678 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2025-03-08 07:26:56,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:26:56,687 INFO L225 Difference]: With dead ends: 1805 [2025-03-08 07:26:56,691 INFO L226 Difference]: Without dead ends: 866 [2025-03-08 07:26:56,697 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 07:26:56,700 INFO L435 NwaCegarLoop]: 1699 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1699 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 07:26:56,701 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1699 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 07:26:56,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2025-03-08 07:26:56,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 866. [2025-03-08 07:26:56,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 864 states have (on average 1.8923611111111112) internal successors, (1635), 865 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:26:56,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1635 transitions. [2025-03-08 07:26:56,770 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1635 transitions. Word has length 28 [2025-03-08 07:26:56,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:26:56,775 INFO L471 AbstractCegarLoop]: Abstraction has 866 states and 1635 transitions. [2025-03-08 07:26:56,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:26:56,775 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1635 transitions. [2025-03-08 07:26:56,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-03-08 07:26:56,776 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:26:56,776 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:26:56,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 07:26:56,776 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:26:56,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:26:56,777 INFO L85 PathProgramCache]: Analyzing trace with hash 546257197, now seen corresponding path program 1 times [2025-03-08 07:26:56,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:26:56,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782048249] [2025-03-08 07:26:56,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:26:56,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:26:56,788 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-08 07:26:56,814 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-08 07:26:56,814 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:26:56,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:26:56,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:26:56,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:26:56,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782048249] [2025-03-08 07:26:56,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782048249] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:26:56,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:26:56,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 07:26:56,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045572969] [2025-03-08 07:26:56,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:26:56,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 07:26:56,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:26:56,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 07:26:56,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 07:26:56,988 INFO L87 Difference]: Start difference. First operand 866 states and 1635 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:26:57,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:26:57,109 INFO L93 Difference]: Finished difference Result 926 states and 1729 transitions. [2025-03-08 07:26:57,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 07:26:57,110 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2025-03-08 07:26:57,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:26:57,113 INFO L225 Difference]: With dead ends: 926 [2025-03-08 07:26:57,114 INFO L226 Difference]: Without dead ends: 866 [2025-03-08 07:26:57,115 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 07:26:57,115 INFO L435 NwaCegarLoop]: 1633 mSDtfsCounter, 0 mSDsluCounter, 4844 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6477 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 07:26:57,116 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6477 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 07:26:57,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2025-03-08 07:26:57,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 866. [2025-03-08 07:26:57,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 864 states have (on average 1.8344907407407407) internal successors, (1585), 865 states have internal predecessors, (1585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:26:57,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1585 transitions. [2025-03-08 07:26:57,143 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1585 transitions. Word has length 28 [2025-03-08 07:26:57,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:26:57,143 INFO L471 AbstractCegarLoop]: Abstraction has 866 states and 1585 transitions. [2025-03-08 07:26:57,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:26:57,144 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1585 transitions. [2025-03-08 07:26:57,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-03-08 07:26:57,145 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:26:57,146 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:26:57,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 07:26:57,146 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:26:57,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:26:57,149 INFO L85 PathProgramCache]: Analyzing trace with hash -822950500, now seen corresponding path program 1 times [2025-03-08 07:26:57,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:26:57,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143076938] [2025-03-08 07:26:57,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:26:57,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:26:57,161 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-03-08 07:26:57,179 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-03-08 07:26:57,179 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:26:57,179 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:26:57,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:26:57,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:26:57,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143076938] [2025-03-08 07:26:57,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143076938] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:26:57,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:26:57,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 07:26:57,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974408996] [2025-03-08 07:26:57,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:26:57,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 07:26:57,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:26:57,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 07:26:57,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 07:26:57,369 INFO L87 Difference]: Start difference. First operand 866 states and 1585 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:02,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:27:02,325 INFO L93 Difference]: Finished difference Result 3121 states and 5894 transitions. [2025-03-08 07:27:02,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 07:27:02,326 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2025-03-08 07:27:02,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:27:02,335 INFO L225 Difference]: With dead ends: 3121 [2025-03-08 07:27:02,335 INFO L226 Difference]: Without dead ends: 2368 [2025-03-08 07:27:02,336 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 07:27:02,337 INFO L435 NwaCegarLoop]: 821 mSDtfsCounter, 2509 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2509 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2025-03-08 07:27:02,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2509 Valid, 839 Invalid, 6507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2025-03-08 07:27:02,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2368 states. [2025-03-08 07:27:02,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2368 to 2368. [2025-03-08 07:27:02,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2368 states, 2366 states have (on average 1.5633981403212172) internal successors, (3699), 2367 states have internal predecessors, (3699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:02,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2368 states to 2368 states and 3699 transitions. [2025-03-08 07:27:02,391 INFO L78 Accepts]: Start accepts. Automaton has 2368 states and 3699 transitions. Word has length 48 [2025-03-08 07:27:02,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:27:02,391 INFO L471 AbstractCegarLoop]: Abstraction has 2368 states and 3699 transitions. [2025-03-08 07:27:02,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:02,392 INFO L276 IsEmpty]: Start isEmpty. Operand 2368 states and 3699 transitions. [2025-03-08 07:27:02,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-03-08 07:27:02,393 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:27:02,393 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:27:02,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 07:27:02,393 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:27:02,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:27:02,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1657211218, now seen corresponding path program 1 times [2025-03-08 07:27:02,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:27:02,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251493362] [2025-03-08 07:27:02,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:27:02,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:27:02,403 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-03-08 07:27:02,417 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-03-08 07:27:02,417 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:27:02,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:27:02,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:27:02,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:27:02,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251493362] [2025-03-08 07:27:02,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251493362] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:27:02,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:27:02,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 07:27:02,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097482448] [2025-03-08 07:27:02,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:27:02,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 07:27:02,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:27:02,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 07:27:02,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 07:27:02,629 INFO L87 Difference]: Start difference. First operand 2368 states and 3699 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:02,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:27:02,924 INFO L93 Difference]: Finished difference Result 3152 states and 4959 transitions. [2025-03-08 07:27:02,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-08 07:27:02,924 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2025-03-08 07:27:02,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:27:02,933 INFO L225 Difference]: With dead ends: 3152 [2025-03-08 07:27:02,933 INFO L226 Difference]: Without dead ends: 3096 [2025-03-08 07:27:02,934 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2025-03-08 07:27:02,935 INFO L435 NwaCegarLoop]: 1579 mSDtfsCounter, 11538 mSDsluCounter, 3104 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11538 SdHoareTripleChecker+Valid, 4683 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 07:27:02,935 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11538 Valid, 4683 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 07:27:02,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3096 states. [2025-03-08 07:27:02,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3096 to 2422. [2025-03-08 07:27:02,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2422 states, 2420 states have (on average 1.5644628099173554) internal successors, (3786), 2421 states have internal predecessors, (3786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:02,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2422 states to 2422 states and 3786 transitions. [2025-03-08 07:27:02,978 INFO L78 Accepts]: Start accepts. Automaton has 2422 states and 3786 transitions. Word has length 77 [2025-03-08 07:27:02,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:27:02,978 INFO L471 AbstractCegarLoop]: Abstraction has 2422 states and 3786 transitions. [2025-03-08 07:27:02,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:02,978 INFO L276 IsEmpty]: Start isEmpty. Operand 2422 states and 3786 transitions. [2025-03-08 07:27:02,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-03-08 07:27:02,979 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:27:02,980 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:27:02,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 07:27:02,980 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:27:02,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:27:02,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1973239561, now seen corresponding path program 1 times [2025-03-08 07:27:02,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:27:02,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434658439] [2025-03-08 07:27:02,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:27:02,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:27:02,989 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-08 07:27:02,997 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-08 07:27:02,998 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:27:02,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:27:03,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:27:03,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:27:03,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434658439] [2025-03-08 07:27:03,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434658439] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:27:03,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:27:03,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 07:27:03,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690791454] [2025-03-08 07:27:03,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:27:03,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 07:27:03,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:27:03,093 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 07:27:03,093 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:27:03,093 INFO L87 Difference]: Start difference. First operand 2422 states and 3786 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:03,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:27:03,124 INFO L93 Difference]: Finished difference Result 2631 states and 4121 transitions. [2025-03-08 07:27:03,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 07:27:03,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2025-03-08 07:27:03,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:27:03,132 INFO L225 Difference]: With dead ends: 2631 [2025-03-08 07:27:03,132 INFO L226 Difference]: Without dead ends: 2521 [2025-03-08 07:27:03,133 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:27:03,133 INFO L435 NwaCegarLoop]: 1581 mSDtfsCounter, 1500 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 07:27:03,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1500 Valid, 1664 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 07:27:03,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2521 states. [2025-03-08 07:27:03,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2521 to 2517. [2025-03-08 07:27:03,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2517 states, 2515 states have (on average 1.5650099403578528) internal successors, (3936), 2516 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:03,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2517 states to 2517 states and 3936 transitions. [2025-03-08 07:27:03,178 INFO L78 Accepts]: Start accepts. Automaton has 2517 states and 3936 transitions. Word has length 79 [2025-03-08 07:27:03,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:27:03,178 INFO L471 AbstractCegarLoop]: Abstraction has 2517 states and 3936 transitions. [2025-03-08 07:27:03,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:03,179 INFO L276 IsEmpty]: Start isEmpty. Operand 2517 states and 3936 transitions. [2025-03-08 07:27:03,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-03-08 07:27:03,180 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:27:03,180 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:27:03,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 07:27:03,181 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:27:03,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:27:03,181 INFO L85 PathProgramCache]: Analyzing trace with hash 2005562796, now seen corresponding path program 1 times [2025-03-08 07:27:03,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:27:03,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271254026] [2025-03-08 07:27:03,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:27:03,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:27:03,194 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-08 07:27:03,207 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-08 07:27:03,207 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:27:03,207 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:27:03,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:27:03,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:27:03,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271254026] [2025-03-08 07:27:03,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271254026] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:27:03,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:27:03,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 07:27:03,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302162822] [2025-03-08 07:27:03,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:27:03,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 07:27:03,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:27:03,590 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 07:27:03,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-08 07:27:03,591 INFO L87 Difference]: Start difference. First operand 2517 states and 3936 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:03,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:27:03,836 INFO L93 Difference]: Finished difference Result 2724 states and 4264 transitions. [2025-03-08 07:27:03,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 07:27:03,836 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2025-03-08 07:27:03,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:27:03,844 INFO L225 Difference]: With dead ends: 2724 [2025-03-08 07:27:03,844 INFO L226 Difference]: Without dead ends: 2519 [2025-03-08 07:27:03,845 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2025-03-08 07:27:03,845 INFO L435 NwaCegarLoop]: 1577 mSDtfsCounter, 10574 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10574 SdHoareTripleChecker+Valid, 2099 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 07:27:03,846 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10574 Valid, 2099 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 07:27:03,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2519 states. [2025-03-08 07:27:03,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2519 to 2517. [2025-03-08 07:27:03,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2517 states, 2515 states have (on average 1.5642147117296223) internal successors, (3934), 2516 states have internal predecessors, (3934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:03,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2517 states to 2517 states and 3934 transitions. [2025-03-08 07:27:03,893 INFO L78 Accepts]: Start accepts. Automaton has 2517 states and 3934 transitions. Word has length 79 [2025-03-08 07:27:03,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:27:03,893 INFO L471 AbstractCegarLoop]: Abstraction has 2517 states and 3934 transitions. [2025-03-08 07:27:03,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:03,894 INFO L276 IsEmpty]: Start isEmpty. Operand 2517 states and 3934 transitions. [2025-03-08 07:27:03,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-03-08 07:27:03,895 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:27:03,895 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:27:03,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 07:27:03,895 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:27:03,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:27:03,896 INFO L85 PathProgramCache]: Analyzing trace with hash 2073442266, now seen corresponding path program 1 times [2025-03-08 07:27:03,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:27:03,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955346198] [2025-03-08 07:27:03,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:27:03,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:27:03,908 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-03-08 07:27:03,930 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-03-08 07:27:03,931 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:27:03,931 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:27:04,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:27:04,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:27:04,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955346198] [2025-03-08 07:27:04,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955346198] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:27:04,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:27:04,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 07:27:04,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759780045] [2025-03-08 07:27:04,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:27:04,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 07:27:04,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:27:04,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 07:27:04,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-08 07:27:04,138 INFO L87 Difference]: Start difference. First operand 2517 states and 3934 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:04,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:27:04,190 INFO L93 Difference]: Finished difference Result 2525 states and 3943 transitions. [2025-03-08 07:27:04,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 07:27:04,191 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2025-03-08 07:27:04,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:27:04,198 INFO L225 Difference]: With dead ends: 2525 [2025-03-08 07:27:04,198 INFO L226 Difference]: Without dead ends: 2523 [2025-03-08 07:27:04,200 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-08 07:27:04,200 INFO L435 NwaCegarLoop]: 1579 mSDtfsCounter, 0 mSDsluCounter, 9461 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11040 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 07:27:04,201 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11040 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 07:27:04,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2523 states. [2025-03-08 07:27:04,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2523 to 2523. [2025-03-08 07:27:04,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 2521 states have (on average 1.562475208250694) internal successors, (3939), 2522 states have internal predecessors, (3939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:04,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 3939 transitions. [2025-03-08 07:27:04,242 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 3939 transitions. Word has length 80 [2025-03-08 07:27:04,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:27:04,243 INFO L471 AbstractCegarLoop]: Abstraction has 2523 states and 3939 transitions. [2025-03-08 07:27:04,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:04,243 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 3939 transitions. [2025-03-08 07:27:04,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2025-03-08 07:27:04,244 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:27:04,244 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:27:04,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 07:27:04,244 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:27:04,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:27:04,245 INFO L85 PathProgramCache]: Analyzing trace with hash -607984566, now seen corresponding path program 1 times [2025-03-08 07:27:04,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:27:04,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196745803] [2025-03-08 07:27:04,245 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:27:04,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:27:04,254 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-03-08 07:27:04,261 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-03-08 07:27:04,261 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:27:04,261 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:27:04,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:27:04,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:27:04,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196745803] [2025-03-08 07:27:04,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196745803] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:27:04,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:27:04,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 07:27:04,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149223437] [2025-03-08 07:27:04,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:27:04,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 07:27:04,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:27:04,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 07:27:04,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:27:04,306 INFO L87 Difference]: Start difference. First operand 2523 states and 3939 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:04,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:27:04,329 INFO L93 Difference]: Finished difference Result 2929 states and 4571 transitions. [2025-03-08 07:27:04,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 07:27:04,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2025-03-08 07:27:04,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:27:04,336 INFO L225 Difference]: With dead ends: 2929 [2025-03-08 07:27:04,336 INFO L226 Difference]: Without dead ends: 2718 [2025-03-08 07:27:04,338 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:27:04,338 INFO L435 NwaCegarLoop]: 1652 mSDtfsCounter, 1517 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 1747 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 07:27:04,338 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1517 Valid, 1747 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 07:27:04,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2718 states. [2025-03-08 07:27:04,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2718 to 2716. [2025-03-08 07:27:04,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2716 states, 2714 states have (on average 1.5607958732498157) internal successors, (4236), 2715 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:04,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2716 states to 2716 states and 4236 transitions. [2025-03-08 07:27:04,413 INFO L78 Accepts]: Start accepts. Automaton has 2716 states and 4236 transitions. Word has length 81 [2025-03-08 07:27:04,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:27:04,415 INFO L471 AbstractCegarLoop]: Abstraction has 2716 states and 4236 transitions. [2025-03-08 07:27:04,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:04,417 INFO L276 IsEmpty]: Start isEmpty. Operand 2716 states and 4236 transitions. [2025-03-08 07:27:04,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2025-03-08 07:27:04,418 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:27:04,419 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:27:04,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 07:27:04,420 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:27:04,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:27:04,421 INFO L85 PathProgramCache]: Analyzing trace with hash -762353398, now seen corresponding path program 1 times [2025-03-08 07:27:04,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:27:04,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412402992] [2025-03-08 07:27:04,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:27:04,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:27:04,434 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-03-08 07:27:04,444 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-03-08 07:27:04,444 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:27:04,444 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:27:04,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:27:04,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:27:04,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412402992] [2025-03-08 07:27:04,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412402992] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:27:04,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:27:04,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 07:27:04,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146796077] [2025-03-08 07:27:04,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:27:04,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 07:27:04,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:27:04,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 07:27:04,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:27:04,493 INFO L87 Difference]: Start difference. First operand 2716 states and 4236 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:04,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:27:04,530 INFO L93 Difference]: Finished difference Result 3492 states and 5434 transitions. [2025-03-08 07:27:04,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 07:27:04,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2025-03-08 07:27:04,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:27:04,539 INFO L225 Difference]: With dead ends: 3492 [2025-03-08 07:27:04,540 INFO L226 Difference]: Without dead ends: 3088 [2025-03-08 07:27:04,541 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:27:04,542 INFO L435 NwaCegarLoop]: 1650 mSDtfsCounter, 1515 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 07:27:04,542 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 1749 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 07:27:04,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3088 states. [2025-03-08 07:27:04,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3088 to 3086. [2025-03-08 07:27:04,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3086 states, 3084 states have (on average 1.5557717250324254) internal successors, (4798), 3085 states have internal predecessors, (4798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:04,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3086 states to 3086 states and 4798 transitions. [2025-03-08 07:27:04,613 INFO L78 Accepts]: Start accepts. Automaton has 3086 states and 4798 transitions. Word has length 81 [2025-03-08 07:27:04,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:27:04,613 INFO L471 AbstractCegarLoop]: Abstraction has 3086 states and 4798 transitions. [2025-03-08 07:27:04,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:04,613 INFO L276 IsEmpty]: Start isEmpty. Operand 3086 states and 4798 transitions. [2025-03-08 07:27:04,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2025-03-08 07:27:04,617 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:27:04,617 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:27:04,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 07:27:04,618 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:27:04,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:27:04,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1741283894, now seen corresponding path program 1 times [2025-03-08 07:27:04,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:27:04,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855902666] [2025-03-08 07:27:04,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:27:04,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:27:04,632 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-03-08 07:27:04,641 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-03-08 07:27:04,641 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:27:04,641 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:27:04,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:27:04,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:27:04,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855902666] [2025-03-08 07:27:04,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855902666] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:27:04,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:27:04,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 07:27:04,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917816355] [2025-03-08 07:27:04,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:27:04,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 07:27:04,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:27:04,689 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 07:27:04,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:27:04,690 INFO L87 Difference]: Start difference. First operand 3086 states and 4798 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:04,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:27:04,736 INFO L93 Difference]: Finished difference Result 4570 states and 7064 transitions. [2025-03-08 07:27:04,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 07:27:04,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2025-03-08 07:27:04,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:27:04,752 INFO L225 Difference]: With dead ends: 4570 [2025-03-08 07:27:04,752 INFO L226 Difference]: Without dead ends: 3796 [2025-03-08 07:27:04,755 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:27:04,756 INFO L435 NwaCegarLoop]: 1648 mSDtfsCounter, 1513 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 07:27:04,756 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 1751 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 07:27:04,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3796 states. [2025-03-08 07:27:04,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3796 to 3794. [2025-03-08 07:27:04,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3794 states, 3792 states have (on average 1.544831223628692) internal successors, (5858), 3793 states have internal predecessors, (5858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:04,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3794 states to 3794 states and 5858 transitions. [2025-03-08 07:27:04,828 INFO L78 Accepts]: Start accepts. Automaton has 3794 states and 5858 transitions. Word has length 81 [2025-03-08 07:27:04,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:27:04,828 INFO L471 AbstractCegarLoop]: Abstraction has 3794 states and 5858 transitions. [2025-03-08 07:27:04,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:04,828 INFO L276 IsEmpty]: Start isEmpty. Operand 3794 states and 5858 transitions. [2025-03-08 07:27:04,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2025-03-08 07:27:04,829 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:27:04,829 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:27:04,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 07:27:04,829 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:27:04,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:27:04,829 INFO L85 PathProgramCache]: Analyzing trace with hash 2105737866, now seen corresponding path program 1 times [2025-03-08 07:27:04,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:27:04,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665303513] [2025-03-08 07:27:04,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:27:04,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:27:04,840 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-03-08 07:27:04,848 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-03-08 07:27:04,848 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:27:04,848 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:27:04,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:27:04,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:27:04,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665303513] [2025-03-08 07:27:04,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665303513] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:27:04,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:27:04,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 07:27:04,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660141660] [2025-03-08 07:27:04,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:27:04,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 07:27:04,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:27:04,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 07:27:04,887 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:27:04,887 INFO L87 Difference]: Start difference. First operand 3794 states and 5858 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:04,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:27:04,937 INFO L93 Difference]: Finished difference Result 6630 states and 10132 transitions. [2025-03-08 07:27:04,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 07:27:04,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2025-03-08 07:27:04,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:27:04,952 INFO L225 Difference]: With dead ends: 6630 [2025-03-08 07:27:04,952 INFO L226 Difference]: Without dead ends: 5148 [2025-03-08 07:27:04,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:27:04,957 INFO L435 NwaCegarLoop]: 1646 mSDtfsCounter, 1511 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 1753 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 07:27:04,958 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1511 Valid, 1753 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 07:27:04,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5148 states. [2025-03-08 07:27:05,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5148 to 5146. [2025-03-08 07:27:05,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5146 states, 5144 states have (on average 1.526049766718507) internal successors, (7850), 5145 states have internal predecessors, (7850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:05,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5146 states to 5146 states and 7850 transitions. [2025-03-08 07:27:05,071 INFO L78 Accepts]: Start accepts. Automaton has 5146 states and 7850 transitions. Word has length 81 [2025-03-08 07:27:05,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:27:05,071 INFO L471 AbstractCegarLoop]: Abstraction has 5146 states and 7850 transitions. [2025-03-08 07:27:05,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:05,072 INFO L276 IsEmpty]: Start isEmpty. Operand 5146 states and 7850 transitions. [2025-03-08 07:27:05,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2025-03-08 07:27:05,073 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:27:05,073 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:27:05,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 07:27:05,073 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:27:05,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:27:05,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1774053558, now seen corresponding path program 1 times [2025-03-08 07:27:05,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:27:05,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479860187] [2025-03-08 07:27:05,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:27:05,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:27:05,085 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-03-08 07:27:05,091 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-03-08 07:27:05,091 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:27:05,091 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:27:05,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:27:05,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:27:05,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479860187] [2025-03-08 07:27:05,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479860187] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:27:05,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:27:05,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 07:27:05,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485875717] [2025-03-08 07:27:05,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:27:05,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 07:27:05,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:27:05,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 07:27:05,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:27:05,127 INFO L87 Difference]: Start difference. First operand 5146 states and 7850 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:05,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:27:05,202 INFO L93 Difference]: Finished difference Result 10558 states and 15884 transitions. [2025-03-08 07:27:05,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 07:27:05,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2025-03-08 07:27:05,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:27:05,217 INFO L225 Difference]: With dead ends: 10558 [2025-03-08 07:27:05,217 INFO L226 Difference]: Without dead ends: 7724 [2025-03-08 07:27:05,223 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:27:05,224 INFO L435 NwaCegarLoop]: 1644 mSDtfsCounter, 1509 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 1755 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 07:27:05,224 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1509 Valid, 1755 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 07:27:05,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7724 states. [2025-03-08 07:27:05,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7724 to 7722. [2025-03-08 07:27:05,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7722 states, 7720 states have (on average 1.499740932642487) internal successors, (11578), 7721 states have internal predecessors, (11578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:05,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7722 states to 7722 states and 11578 transitions. [2025-03-08 07:27:05,413 INFO L78 Accepts]: Start accepts. Automaton has 7722 states and 11578 transitions. Word has length 81 [2025-03-08 07:27:05,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:27:05,413 INFO L471 AbstractCegarLoop]: Abstraction has 7722 states and 11578 transitions. [2025-03-08 07:27:05,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:05,413 INFO L276 IsEmpty]: Start isEmpty. Operand 7722 states and 11578 transitions. [2025-03-08 07:27:05,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2025-03-08 07:27:05,414 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:27:05,414 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:27:05,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 07:27:05,414 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:27:05,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:27:05,415 INFO L85 PathProgramCache]: Analyzing trace with hash 2034195466, now seen corresponding path program 1 times [2025-03-08 07:27:05,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:27:05,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285414776] [2025-03-08 07:27:05,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:27:05,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:27:05,425 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-03-08 07:27:05,432 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-03-08 07:27:05,432 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:27:05,433 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:27:05,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:27:05,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:27:05,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285414776] [2025-03-08 07:27:05,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285414776] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:27:05,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:27:05,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 07:27:05,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417815109] [2025-03-08 07:27:05,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:27:05,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 07:27:05,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:27:05,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 07:27:05,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:27:05,470 INFO L87 Difference]: Start difference. First operand 7722 states and 11578 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:05,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:27:05,590 INFO L93 Difference]: Finished difference Result 18030 states and 26620 transitions. [2025-03-08 07:27:05,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 07:27:05,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2025-03-08 07:27:05,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:27:05,614 INFO L225 Difference]: With dead ends: 18030 [2025-03-08 07:27:05,615 INFO L226 Difference]: Without dead ends: 12620 [2025-03-08 07:27:05,624 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:27:05,625 INFO L435 NwaCegarLoop]: 1642 mSDtfsCounter, 1507 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1757 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 07:27:05,625 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 1757 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 07:27:05,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12620 states. [2025-03-08 07:27:05,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12620 to 12618. [2025-03-08 07:27:05,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12618 states, 12616 states have (on average 1.4681357006975269) internal successors, (18522), 12617 states have internal predecessors, (18522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:05,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12618 states to 12618 states and 18522 transitions. [2025-03-08 07:27:05,900 INFO L78 Accepts]: Start accepts. Automaton has 12618 states and 18522 transitions. Word has length 81 [2025-03-08 07:27:05,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:27:05,900 INFO L471 AbstractCegarLoop]: Abstraction has 12618 states and 18522 transitions. [2025-03-08 07:27:05,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:05,900 INFO L276 IsEmpty]: Start isEmpty. Operand 12618 states and 18522 transitions. [2025-03-08 07:27:05,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-08 07:27:05,902 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:27:05,902 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:27:05,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 07:27:05,903 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:27:05,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:27:05,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1506966134, now seen corresponding path program 1 times [2025-03-08 07:27:05,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:27:05,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590935399] [2025-03-08 07:27:05,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:27:05,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:27:05,910 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-08 07:27:05,917 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-08 07:27:05,917 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:27:05,917 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:27:05,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:27:05,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:27:05,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590935399] [2025-03-08 07:27:05,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590935399] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:27:05,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:27:05,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 07:27:05,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779500674] [2025-03-08 07:27:05,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:27:05,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 07:27:05,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:27:05,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 07:27:05,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:27:05,955 INFO L87 Difference]: Start difference. First operand 12618 states and 18522 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:06,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:27:06,151 INFO L93 Difference]: Finished difference Result 23377 states and 34272 transitions. [2025-03-08 07:27:06,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 07:27:06,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2025-03-08 07:27:06,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:27:06,181 INFO L225 Difference]: With dead ends: 23377 [2025-03-08 07:27:06,181 INFO L226 Difference]: Without dead ends: 17614 [2025-03-08 07:27:06,191 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:27:06,192 INFO L435 NwaCegarLoop]: 1657 mSDtfsCounter, 1516 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 07:27:06,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 1748 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 07:27:06,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17614 states. [2025-03-08 07:27:06,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17614 to 17612. [2025-03-08 07:27:06,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17612 states, 17610 states have (on average 1.4553094832481546) internal successors, (25628), 17611 states have internal predecessors, (25628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:06,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17612 states to 17612 states and 25628 transitions. [2025-03-08 07:27:06,518 INFO L78 Accepts]: Start accepts. Automaton has 17612 states and 25628 transitions. Word has length 83 [2025-03-08 07:27:06,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:27:06,519 INFO L471 AbstractCegarLoop]: Abstraction has 17612 states and 25628 transitions. [2025-03-08 07:27:06,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:06,519 INFO L276 IsEmpty]: Start isEmpty. Operand 17612 states and 25628 transitions. [2025-03-08 07:27:06,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-03-08 07:27:06,523 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:27:06,523 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:27:06,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-08 07:27:06,523 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:27:06,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:27:06,524 INFO L85 PathProgramCache]: Analyzing trace with hash 113999974, now seen corresponding path program 1 times [2025-03-08 07:27:06,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:27:06,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092431764] [2025-03-08 07:27:06,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:27:06,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:27:06,534 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-03-08 07:27:06,551 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-03-08 07:27:06,552 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:27:06,552 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:27:06,747 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 07:27:06,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:27:06,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092431764] [2025-03-08 07:27:06,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092431764] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:27:06,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:27:06,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 07:27:06,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773471142] [2025-03-08 07:27:06,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:27:06,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 07:27:06,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:27:06,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 07:27:06,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-03-08 07:27:06,748 INFO L87 Difference]: Start difference. First operand 17612 states and 25628 transitions. Second operand has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:08,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:27:08,198 INFO L93 Difference]: Finished difference Result 127836 states and 184100 transitions. [2025-03-08 07:27:08,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 07:27:08,199 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2025-03-08 07:27:08,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:27:08,448 INFO L225 Difference]: With dead ends: 127836 [2025-03-08 07:27:08,448 INFO L226 Difference]: Without dead ends: 112538 [2025-03-08 07:27:08,485 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2025-03-08 07:27:08,486 INFO L435 NwaCegarLoop]: 1678 mSDtfsCounter, 9830 mSDsluCounter, 2923 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9830 SdHoareTripleChecker+Valid, 4601 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 07:27:08,486 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9830 Valid, 4601 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 07:27:08,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112538 states. [2025-03-08 07:27:09,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112538 to 32908. [2025-03-08 07:27:09,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32908 states, 32906 states have (on average 1.4420470430924452) internal successors, (47452), 32907 states have internal predecessors, (47452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:09,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32908 states to 32908 states and 47452 transitions. [2025-03-08 07:27:09,643 INFO L78 Accepts]: Start accepts. Automaton has 32908 states and 47452 transitions. Word has length 104 [2025-03-08 07:27:09,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:27:09,643 INFO L471 AbstractCegarLoop]: Abstraction has 32908 states and 47452 transitions. [2025-03-08 07:27:09,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:09,643 INFO L276 IsEmpty]: Start isEmpty. Operand 32908 states and 47452 transitions. [2025-03-08 07:27:09,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-03-08 07:27:09,648 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:27:09,649 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:27:09,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-08 07:27:09,649 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:27:09,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:27:09,649 INFO L85 PathProgramCache]: Analyzing trace with hash -40368858, now seen corresponding path program 1 times [2025-03-08 07:27:09,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:27:09,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590397601] [2025-03-08 07:27:09,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:27:09,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:27:09,659 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-03-08 07:27:09,671 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-03-08 07:27:09,672 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:27:09,672 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:27:09,844 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-08 07:27:09,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:27:09,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590397601] [2025-03-08 07:27:09,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590397601] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:27:09,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:27:09,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 07:27:09,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099194028] [2025-03-08 07:27:09,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:27:09,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 07:27:09,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:27:09,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 07:27:09,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-03-08 07:27:09,846 INFO L87 Difference]: Start difference. First operand 32908 states and 47452 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:12,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:27:12,193 INFO L93 Difference]: Finished difference Result 143132 states and 205924 transitions. [2025-03-08 07:27:12,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 07:27:12,194 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2025-03-08 07:27:12,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:27:12,415 INFO L225 Difference]: With dead ends: 143132 [2025-03-08 07:27:12,415 INFO L226 Difference]: Without dead ends: 127834 [2025-03-08 07:27:12,457 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2025-03-08 07:27:12,459 INFO L435 NwaCegarLoop]: 1675 mSDtfsCounter, 9851 mSDsluCounter, 2822 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9851 SdHoareTripleChecker+Valid, 4497 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 07:27:12,459 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9851 Valid, 4497 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 07:27:12,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127834 states. [2025-03-08 07:27:14,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127834 to 55884. [2025-03-08 07:27:14,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55884 states, 55882 states have (on average 1.4320890447729144) internal successors, (80028), 55883 states have internal predecessors, (80028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:14,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55884 states to 55884 states and 80028 transitions. [2025-03-08 07:27:14,167 INFO L78 Accepts]: Start accepts. Automaton has 55884 states and 80028 transitions. Word has length 104 [2025-03-08 07:27:14,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:27:14,167 INFO L471 AbstractCegarLoop]: Abstraction has 55884 states and 80028 transitions. [2025-03-08 07:27:14,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:14,167 INFO L276 IsEmpty]: Start isEmpty. Operand 55884 states and 80028 transitions. [2025-03-08 07:27:14,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-03-08 07:27:14,172 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:27:14,172 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:27:14,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-08 07:27:14,173 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:27:14,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:27:14,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1019299354, now seen corresponding path program 1 times [2025-03-08 07:27:14,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:27:14,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339303467] [2025-03-08 07:27:14,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:27:14,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:27:14,186 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-03-08 07:27:14,195 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-03-08 07:27:14,196 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:27:14,196 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:27:14,343 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-08 07:27:14,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:27:14,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339303467] [2025-03-08 07:27:14,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339303467] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:27:14,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:27:14,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 07:27:14,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57737796] [2025-03-08 07:27:14,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:27:14,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 07:27:14,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:27:14,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 07:27:14,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-03-08 07:27:14,345 INFO L87 Difference]: Start difference. First operand 55884 states and 80028 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:16,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:27:16,497 INFO L93 Difference]: Finished difference Result 158428 states and 227748 transitions. [2025-03-08 07:27:16,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 07:27:16,498 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2025-03-08 07:27:16,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:27:16,681 INFO L225 Difference]: With dead ends: 158428 [2025-03-08 07:27:16,681 INFO L226 Difference]: Without dead ends: 143130 [2025-03-08 07:27:16,729 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2025-03-08 07:27:16,729 INFO L435 NwaCegarLoop]: 1672 mSDtfsCounter, 9896 mSDsluCounter, 2718 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9896 SdHoareTripleChecker+Valid, 4390 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 07:27:16,730 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9896 Valid, 4390 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 07:27:16,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143130 states. [2025-03-08 07:27:19,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143130 to 71180. [2025-03-08 07:27:19,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71180 states, 71178 states have (on average 1.4309477647587738) internal successors, (101852), 71179 states have internal predecessors, (101852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:19,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71180 states to 71180 states and 101852 transitions. [2025-03-08 07:27:19,561 INFO L78 Accepts]: Start accepts. Automaton has 71180 states and 101852 transitions. Word has length 104 [2025-03-08 07:27:19,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:27:19,562 INFO L471 AbstractCegarLoop]: Abstraction has 71180 states and 101852 transitions. [2025-03-08 07:27:19,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:19,562 INFO L276 IsEmpty]: Start isEmpty. Operand 71180 states and 101852 transitions. [2025-03-08 07:27:19,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-03-08 07:27:19,568 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:27:19,568 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:27:19,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-08 07:27:19,568 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:27:19,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:27:19,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1467244890, now seen corresponding path program 1 times [2025-03-08 07:27:19,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:27:19,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123074262] [2025-03-08 07:27:19,569 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:27:19,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:27:19,581 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-03-08 07:27:19,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-03-08 07:27:19,792 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:27:19,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:27:19,928 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-08 07:27:19,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:27:19,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123074262] [2025-03-08 07:27:19,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123074262] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:27:19,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:27:19,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 07:27:19,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992704814] [2025-03-08 07:27:19,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:27:19,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 07:27:19,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:27:19,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 07:27:19,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-03-08 07:27:19,929 INFO L87 Difference]: Start difference. First operand 71180 states and 101852 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:22,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:27:22,510 INFO L93 Difference]: Finished difference Result 173724 states and 249572 transitions. [2025-03-08 07:27:22,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 07:27:22,510 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2025-03-08 07:27:22,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:27:22,737 INFO L225 Difference]: With dead ends: 173724 [2025-03-08 07:27:22,738 INFO L226 Difference]: Without dead ends: 158426 [2025-03-08 07:27:22,773 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2025-03-08 07:27:22,773 INFO L435 NwaCegarLoop]: 1669 mSDtfsCounter, 9946 mSDsluCounter, 2687 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9946 SdHoareTripleChecker+Valid, 4356 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 07:27:22,773 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9946 Valid, 4356 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 07:27:22,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158426 states. [2025-03-08 07:27:25,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158426 to 86476. [2025-03-08 07:27:25,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86476 states, 86474 states have (on average 1.4302102366029095) internal successors, (123676), 86475 states have internal predecessors, (123676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:25,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86476 states to 86476 states and 123676 transitions. [2025-03-08 07:27:25,702 INFO L78 Accepts]: Start accepts. Automaton has 86476 states and 123676 transitions. Word has length 104 [2025-03-08 07:27:25,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:27:25,702 INFO L471 AbstractCegarLoop]: Abstraction has 86476 states and 123676 transitions. [2025-03-08 07:27:25,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:25,702 INFO L276 IsEmpty]: Start isEmpty. Operand 86476 states and 123676 transitions. [2025-03-08 07:27:25,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-03-08 07:27:25,709 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:27:25,709 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:27:25,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-08 07:27:25,709 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:27:25,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:27:25,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1052069018, now seen corresponding path program 1 times [2025-03-08 07:27:25,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:27:25,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885144029] [2025-03-08 07:27:25,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:27:25,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:27:25,721 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-03-08 07:27:25,730 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-03-08 07:27:25,730 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:27:25,731 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:27:25,900 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-08 07:27:25,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:27:25,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885144029] [2025-03-08 07:27:25,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885144029] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:27:25,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:27:25,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 07:27:25,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517641972] [2025-03-08 07:27:25,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:27:25,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 07:27:25,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:27:25,901 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 07:27:25,901 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-03-08 07:27:25,901 INFO L87 Difference]: Start difference. First operand 86476 states and 123676 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:29,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:27:29,204 INFO L93 Difference]: Finished difference Result 189020 states and 271396 transitions. [2025-03-08 07:27:29,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 07:27:29,318 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2025-03-08 07:27:29,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:27:29,580 INFO L225 Difference]: With dead ends: 189020 [2025-03-08 07:27:29,580 INFO L226 Difference]: Without dead ends: 173722 [2025-03-08 07:27:29,634 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2025-03-08 07:27:29,635 INFO L435 NwaCegarLoop]: 1666 mSDtfsCounter, 10005 mSDsluCounter, 2723 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10005 SdHoareTripleChecker+Valid, 4389 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 07:27:29,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10005 Valid, 4389 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 07:27:29,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173722 states. [2025-03-08 07:27:32,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173722 to 101772. [2025-03-08 07:27:33,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101772 states, 101770 states have (on average 1.4296944089613834) internal successors, (145500), 101771 states have internal predecessors, (145500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:33,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101772 states to 101772 states and 145500 transitions. [2025-03-08 07:27:33,187 INFO L78 Accepts]: Start accepts. Automaton has 101772 states and 145500 transitions. Word has length 104 [2025-03-08 07:27:33,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:27:33,187 INFO L471 AbstractCegarLoop]: Abstraction has 101772 states and 145500 transitions. [2025-03-08 07:27:33,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:27:33,188 INFO L276 IsEmpty]: Start isEmpty. Operand 101772 states and 145500 transitions. [2025-03-08 07:27:33,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-03-08 07:27:33,193 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:27:33,194 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:27:33,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-08 07:27:33,194 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:27:33,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:27:33,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1538787290, now seen corresponding path program 1 times [2025-03-08 07:27:33,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:27:33,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686525590] [2025-03-08 07:27:33,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:27:33,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:27:33,207 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-03-08 07:27:33,218 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-03-08 07:27:33,218 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:27:33,218 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:27:33,389 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-08 07:27:33,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:27:33,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686525590] [2025-03-08 07:27:33,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686525590] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:27:33,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:27:33,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 07:27:33,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772312643] [2025-03-08 07:27:33,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:27:33,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 07:27:33,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:27:33,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 07:27:33,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-03-08 07:27:33,391 INFO L87 Difference]: Start difference. First operand 101772 states and 145500 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)