./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label04.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.5.1.ufo.UNBOUNDED.pals+Problem12_label04.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 458fab2bdfe4212d9f9b96d7c2c36af664c89502ca02bed6549d1aa757cc9448 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 07:19:43,967 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 07:19:44,019 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 07:19:44,022 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 07:19:44,022 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 07:19:44,038 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 07:19:44,039 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 07:19:44,039 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 07:19:44,040 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 07:19:44,040 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 07:19:44,040 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 07:19:44,041 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 07:19:44,041 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 07:19:44,041 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 07:19:44,041 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 07:19:44,042 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 07:19:44,042 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 07:19:44,042 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 07:19:44,042 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 07:19:44,042 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 07:19:44,042 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 07:19:44,042 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 07:19:44,042 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 07:19:44,042 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 07:19:44,042 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 07:19:44,042 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 07:19:44,042 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 07:19:44,043 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 07:19:44,043 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 07:19:44,043 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 07:19:44,043 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 07:19:44,043 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 07:19:44,043 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 07:19:44,043 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 07:19:44,043 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 07:19:44,043 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 07:19:44,044 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 07:19:44,044 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 07:19:44,044 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 07:19:44,044 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 07:19:44,044 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 07:19:44,044 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 07:19:44,044 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 07:19:44,044 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 -> 458fab2bdfe4212d9f9b96d7c2c36af664c89502ca02bed6549d1aa757cc9448 [2025-03-08 07:19:44,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 07:19:44,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 07:19:44,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 07:19:44,271 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 07:19:44,271 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 07:19:44,272 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label04.c [2025-03-08 07:19:45,404 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b3438b57/5b5f8f6218e247d5bad6057eca4b360e/FLAGf9d4ce85c [2025-03-08 07:19:45,774 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 07:19:45,775 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label04.c [2025-03-08 07:19:45,800 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b3438b57/5b5f8f6218e247d5bad6057eca4b360e/FLAGf9d4ce85c [2025-03-08 07:19:45,813 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b3438b57/5b5f8f6218e247d5bad6057eca4b360e [2025-03-08 07:19:45,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 07:19:45,816 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 07:19:45,817 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 07:19:45,817 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 07:19:45,820 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 07:19:45,820 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 07:19:45" (1/1) ... [2025-03-08 07:19:45,822 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b46ae99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:19:45, skipping insertion in model container [2025-03-08 07:19:45,822 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 07:19:45" (1/1) ... [2025-03-08 07:19:45,889 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 07:19:46,201 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.5.1.ufo.UNBOUNDED.pals+Problem12_label04.c[11705,11718] [2025-03-08 07:19:46,267 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.5.1.ufo.UNBOUNDED.pals+Problem12_label04.c[18766,18779] [2025-03-08 07:19:46,675 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 07:19:46,684 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 07:19:46,713 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.5.1.ufo.UNBOUNDED.pals+Problem12_label04.c[11705,11718] [2025-03-08 07:19:46,722 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.5.1.ufo.UNBOUNDED.pals+Problem12_label04.c[18766,18779] [2025-03-08 07:19:46,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 07:19:46,970 INFO L204 MainTranslator]: Completed translation [2025-03-08 07:19:46,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:19:46 WrapperNode [2025-03-08 07:19:46,971 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 07:19:46,972 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 07:19:46,972 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 07:19:46,972 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 07:19:46,976 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:19:46" (1/1) ... [2025-03-08 07:19:47,010 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:19:46" (1/1) ... [2025-03-08 07:19:47,243 INFO L138 Inliner]: procedures = 37, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5092 [2025-03-08 07:19:47,244 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 07:19:47,244 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 07:19:47,244 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 07:19:47,245 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 07:19:47,251 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:19:46" (1/1) ... [2025-03-08 07:19:47,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:19:46" (1/1) ... [2025-03-08 07:19:47,287 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:19:46" (1/1) ... [2025-03-08 07:19:47,401 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 07:19:47,401 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:19:46" (1/1) ... [2025-03-08 07:19:47,401 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:19:46" (1/1) ... [2025-03-08 07:19:47,536 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:19:46" (1/1) ... [2025-03-08 07:19:47,548 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:19:46" (1/1) ... [2025-03-08 07:19:47,562 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:19:46" (1/1) ... [2025-03-08 07:19:47,576 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:19:46" (1/1) ... [2025-03-08 07:19:47,606 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 07:19:47,609 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 07:19:47,609 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 07:19:47,609 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 07:19:47,610 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:19:46" (1/1) ... [2025-03-08 07:19:47,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 07:19:47,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:19:47,637 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 07:19:47,643 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 07:19:47,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 07:19:47,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 07:19:47,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 07:19:47,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 07:19:47,730 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 07:19:47,731 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 07:19:50,956 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2131: havoc calculate_output_#t~ret37#1; [2025-03-08 07:19:50,957 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3610: havoc calculate_output2_#t~ret38#1; [2025-03-08 07:19:50,957 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L5100: havoc calculate_output3_#t~ret39#1; [2025-03-08 07:19:51,083 INFO L? ?]: Removed 744 outVars from TransFormulas that were not future-live. [2025-03-08 07:19:51,084 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 07:19:51,107 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 07:19:51,107 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 07:19:51,107 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 07:19:51 BoogieIcfgContainer [2025-03-08 07:19:51,108 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 07:19:51,109 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 07:19:51,109 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 07:19:51,117 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 07:19:51,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 07:19:45" (1/3) ... [2025-03-08 07:19:51,117 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@274774fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 07:19:51, skipping insertion in model container [2025-03-08 07:19:51,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:19:46" (2/3) ... [2025-03-08 07:19:51,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@274774fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 07:19:51, skipping insertion in model container [2025-03-08 07:19:51,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 07:19:51" (3/3) ... [2025-03-08 07:19:51,119 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label04.c [2025-03-08 07:19:51,129 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 07:19:51,132 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label04.c that has 1 procedures, 900 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-03-08 07:19:51,206 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 07:19:51,217 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;@da8352, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 07:19:51,218 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-08 07:19:51,224 INFO L276 IsEmpty]: Start isEmpty. Operand has 900 states, 897 states have (on average 1.9030100334448161) internal successors, (1707), 899 states have internal predecessors, (1707), 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 07:19:51,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-03-08 07:19:51,231 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:19:51,232 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] [2025-03-08 07:19:51,232 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:19:51,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:19:51,236 INFO L85 PathProgramCache]: Analyzing trace with hash -29917392, now seen corresponding path program 1 times [2025-03-08 07:19:51,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:19:51,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883098122] [2025-03-08 07:19:51,245 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:19:51,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:19:51,310 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-08 07:19:51,347 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-08 07:19:51,348 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:19:51,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:19:51,444 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 07:19:51,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:19:51,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883098122] [2025-03-08 07:19:51,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883098122] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:19:51,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:19:51,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 07:19:51,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236710582] [2025-03-08 07:19:51,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:19:51,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 07:19:51,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:19:51,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 07:19:51,464 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 07:19:51,467 INFO L87 Difference]: Start difference. First operand has 900 states, 897 states have (on average 1.9030100334448161) internal successors, (1707), 899 states have internal predecessors, (1707), 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 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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 07:19:51,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:19:51,563 INFO L93 Difference]: Finished difference Result 1762 states and 3343 transitions. [2025-03-08 07:19:51,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 07:19:51,566 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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 24 [2025-03-08 07:19:51,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:19:51,575 INFO L225 Difference]: With dead ends: 1762 [2025-03-08 07:19:51,575 INFO L226 Difference]: Without dead ends: 835 [2025-03-08 07:19:51,579 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 07:19:51,581 INFO L435 NwaCegarLoop]: 1641 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, 1641 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 07:19:51,582 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1641 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 07:19:51,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2025-03-08 07:19:51,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 835. [2025-03-08 07:19:51,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 833 states have (on average 1.893157262905162) internal successors, (1577), 834 states have internal predecessors, (1577), 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 07:19:51,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1577 transitions. [2025-03-08 07:19:51,653 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1577 transitions. Word has length 24 [2025-03-08 07:19:51,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:19:51,654 INFO L471 AbstractCegarLoop]: Abstraction has 835 states and 1577 transitions. [2025-03-08 07:19:51,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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 07:19:51,654 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1577 transitions. [2025-03-08 07:19:51,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-03-08 07:19:51,656 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:19:51,656 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] [2025-03-08 07:19:51,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 07:19:51,656 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:19:51,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:19:51,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1026989745, now seen corresponding path program 1 times [2025-03-08 07:19:51,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:19:51,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504220082] [2025-03-08 07:19:51,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:19:51,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:19:51,670 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-08 07:19:51,686 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-08 07:19:51,687 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:19:51,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:19:51,850 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 07:19:51,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:19:51,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504220082] [2025-03-08 07:19:51,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504220082] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:19:51,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:19:51,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 07:19:51,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887280951] [2025-03-08 07:19:51,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:19:51,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 07:19:51,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:19:51,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 07:19:51,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 07:19:51,854 INFO L87 Difference]: Start difference. First operand 835 states and 1577 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 07:19:51,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:19:51,934 INFO L93 Difference]: Finished difference Result 883 states and 1651 transitions. [2025-03-08 07:19:51,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 07:19:51,934 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 24 [2025-03-08 07:19:51,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:19:51,938 INFO L225 Difference]: With dead ends: 883 [2025-03-08 07:19:51,938 INFO L226 Difference]: Without dead ends: 835 [2025-03-08 07:19:51,939 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 07:19:51,940 INFO L435 NwaCegarLoop]: 1575 mSDtfsCounter, 0 mSDsluCounter, 4689 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6264 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 07:19:51,940 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6264 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 07:19:51,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2025-03-08 07:19:51,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 835. [2025-03-08 07:19:51,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 833 states have (on average 1.8559423769507803) internal successors, (1546), 834 states have internal predecessors, (1546), 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 07:19:51,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1546 transitions. [2025-03-08 07:19:51,966 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1546 transitions. Word has length 24 [2025-03-08 07:19:51,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:19:51,967 INFO L471 AbstractCegarLoop]: Abstraction has 835 states and 1546 transitions. [2025-03-08 07:19:51,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 07:19:51,967 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1546 transitions. [2025-03-08 07:19:51,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2025-03-08 07:19:51,970 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:19:51,971 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] [2025-03-08 07:19:51,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 07:19:51,971 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:19:51,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:19:51,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1149039, now seen corresponding path program 1 times [2025-03-08 07:19:51,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:19:51,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128606053] [2025-03-08 07:19:51,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:19:51,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:19:51,982 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-03-08 07:19:52,002 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-03-08 07:19:52,004 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:19:52,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:19:52,149 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 07:19:52,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:19:52,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128606053] [2025-03-08 07:19:52,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128606053] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:19:52,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:19:52,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 07:19:52,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770201550] [2025-03-08 07:19:52,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:19:52,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 07:19:52,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:19:52,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 07:19:52,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 07:19:52,151 INFO L87 Difference]: Start difference. First operand 835 states and 1546 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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 07:19:52,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:19:52,364 INFO L93 Difference]: Finished difference Result 1275 states and 2246 transitions. [2025-03-08 07:19:52,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-08 07:19:52,368 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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 54 [2025-03-08 07:19:52,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:19:52,373 INFO L225 Difference]: With dead ends: 1275 [2025-03-08 07:19:52,373 INFO L226 Difference]: Without dead ends: 1231 [2025-03-08 07:19:52,374 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2025-03-08 07:19:52,375 INFO L435 NwaCegarLoop]: 1540 mSDtfsCounter, 7979 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7979 SdHoareTripleChecker+Valid, 2696 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 07:19:52,375 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7979 Valid, 2696 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 07:19:52,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2025-03-08 07:19:52,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 877. [2025-03-08 07:19:52,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 875 states have (on average 1.8434285714285714) internal successors, (1613), 876 states have internal predecessors, (1613), 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 07:19:52,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1613 transitions. [2025-03-08 07:19:52,401 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1613 transitions. Word has length 54 [2025-03-08 07:19:52,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:19:52,402 INFO L471 AbstractCegarLoop]: Abstraction has 877 states and 1613 transitions. [2025-03-08 07:19:52,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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 07:19:52,402 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1613 transitions. [2025-03-08 07:19:52,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-03-08 07:19:52,404 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:19:52,404 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] [2025-03-08 07:19:52,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 07:19:52,405 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:19:52,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:19:52,406 INFO L85 PathProgramCache]: Analyzing trace with hash 16126764, now seen corresponding path program 1 times [2025-03-08 07:19:52,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:19:52,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752658501] [2025-03-08 07:19:52,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:19:52,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:19:52,416 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-08 07:19:52,428 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-08 07:19:52,429 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:19:52,429 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:19:52,497 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 07:19:52,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:19:52,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752658501] [2025-03-08 07:19:52,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752658501] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:19:52,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:19:52,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 07:19:52,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098638140] [2025-03-08 07:19:52,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:19:52,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 07:19:52,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:19:52,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 07:19:52,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:19:52,500 INFO L87 Difference]: Start difference. First operand 877 states and 1613 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 07:19:52,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:19:52,534 INFO L93 Difference]: Finished difference Result 1038 states and 1868 transitions. [2025-03-08 07:19:52,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 07:19:52,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2025-03-08 07:19:52,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:19:52,539 INFO L225 Difference]: With dead ends: 1038 [2025-03-08 07:19:52,539 INFO L226 Difference]: Without dead ends: 952 [2025-03-08 07:19:52,539 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 07:19:52,540 INFO L435 NwaCegarLoop]: 1542 mSDtfsCounter, 1484 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1605 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 07:19:52,540 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1605 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 07:19:52,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2025-03-08 07:19:52,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 948. [2025-03-08 07:19:52,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 946 states have (on average 1.8213530655391121) internal successors, (1723), 947 states have internal predecessors, (1723), 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 07:19:52,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1723 transitions. [2025-03-08 07:19:52,559 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1723 transitions. Word has length 56 [2025-03-08 07:19:52,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:19:52,560 INFO L471 AbstractCegarLoop]: Abstraction has 948 states and 1723 transitions. [2025-03-08 07:19:52,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 07:19:52,560 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1723 transitions. [2025-03-08 07:19:52,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-03-08 07:19:52,562 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:19:52,562 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] [2025-03-08 07:19:52,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 07:19:52,562 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:19:52,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:19:52,563 INFO L85 PathProgramCache]: Analyzing trace with hash 48449999, now seen corresponding path program 1 times [2025-03-08 07:19:52,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:19:52,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718297622] [2025-03-08 07:19:52,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:19:52,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:19:52,571 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-08 07:19:52,578 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-08 07:19:52,578 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:19:52,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:19:52,786 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 07:19:52,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:19:52,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718297622] [2025-03-08 07:19:52,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718297622] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:19:52,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:19:52,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 07:19:52,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878507461] [2025-03-08 07:19:52,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:19:52,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 07:19:52,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:19:52,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 07:19:52,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-08 07:19:52,789 INFO L87 Difference]: Start difference. First operand 948 states and 1723 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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 07:19:52,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:19:52,937 INFO L93 Difference]: Finished difference Result 1107 states and 1971 transitions. [2025-03-08 07:19:52,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 07:19:52,937 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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 56 [2025-03-08 07:19:52,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:19:52,941 INFO L225 Difference]: With dead ends: 1107 [2025-03-08 07:19:52,941 INFO L226 Difference]: Without dead ends: 950 [2025-03-08 07:19:52,941 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2025-03-08 07:19:52,942 INFO L435 NwaCegarLoop]: 1540 mSDtfsCounter, 5976 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5976 SdHoareTripleChecker+Valid, 1805 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 07:19:52,942 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5976 Valid, 1805 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 07:19:52,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2025-03-08 07:19:52,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 948. [2025-03-08 07:19:52,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 946 states have (on average 1.8192389006342495) internal successors, (1721), 947 states have internal predecessors, (1721), 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 07:19:52,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1721 transitions. [2025-03-08 07:19:52,964 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1721 transitions. Word has length 56 [2025-03-08 07:19:52,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:19:52,964 INFO L471 AbstractCegarLoop]: Abstraction has 948 states and 1721 transitions. [2025-03-08 07:19:52,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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 07:19:52,965 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1721 transitions. [2025-03-08 07:19:52,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-03-08 07:19:52,965 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:19:52,965 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] [2025-03-08 07:19:52,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 07:19:52,965 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:19:52,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:19:52,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1532487703, now seen corresponding path program 1 times [2025-03-08 07:19:52,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:19:52,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147135832] [2025-03-08 07:19:52,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:19:52,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:19:52,973 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-03-08 07:19:52,985 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-03-08 07:19:52,987 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:19:52,987 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:19:53,190 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 07:19:53,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:19:53,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147135832] [2025-03-08 07:19:53,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147135832] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:19:53,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:19:53,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 07:19:53,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073021436] [2025-03-08 07:19:53,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:19:53,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 07:19:53,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:19:53,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 07:19:53,191 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-08 07:19:53,191 INFO L87 Difference]: Start difference. First operand 948 states and 1721 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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 07:19:53,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:19:53,244 INFO L93 Difference]: Finished difference Result 956 states and 1730 transitions. [2025-03-08 07:19:53,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 07:19:53,245 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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 57 [2025-03-08 07:19:53,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:19:53,248 INFO L225 Difference]: With dead ends: 956 [2025-03-08 07:19:53,248 INFO L226 Difference]: Without dead ends: 954 [2025-03-08 07:19:53,248 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 07:19:53,249 INFO L435 NwaCegarLoop]: 1540 mSDtfsCounter, 0 mSDsluCounter, 9227 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10767 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 07:19:53,249 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10767 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 07:19:53,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2025-03-08 07:19:53,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 954. [2025-03-08 07:19:53,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 952 states have (on average 1.8130252100840336) internal successors, (1726), 953 states have internal predecessors, (1726), 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 07:19:53,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1726 transitions. [2025-03-08 07:19:53,264 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1726 transitions. Word has length 57 [2025-03-08 07:19:53,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:19:53,264 INFO L471 AbstractCegarLoop]: Abstraction has 954 states and 1726 transitions. [2025-03-08 07:19:53,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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 07:19:53,264 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1726 transitions. [2025-03-08 07:19:53,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-03-08 07:19:53,265 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:19:53,265 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] [2025-03-08 07:19:53,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 07:19:53,265 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:19:53,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:19:53,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1331006163, now seen corresponding path program 1 times [2025-03-08 07:19:53,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:19:53,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504197563] [2025-03-08 07:19:53,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:19:53,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:19:53,272 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-03-08 07:19:53,277 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-03-08 07:19:53,277 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:19:53,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:19:53,305 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 07:19:53,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:19:53,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504197563] [2025-03-08 07:19:53,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504197563] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:19:53,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:19:53,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 07:19:53,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471743388] [2025-03-08 07:19:53,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:19:53,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 07:19:53,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:19:53,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 07:19:53,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:19:53,306 INFO L87 Difference]: Start difference. First operand 954 states and 1726 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 07:19:53,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:19:53,345 INFO L93 Difference]: Finished difference Result 1264 states and 2198 transitions. [2025-03-08 07:19:53,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 07:19:53,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2025-03-08 07:19:53,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:19:53,350 INFO L225 Difference]: With dead ends: 1264 [2025-03-08 07:19:53,350 INFO L226 Difference]: Without dead ends: 1101 [2025-03-08 07:19:53,350 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 07:19:53,352 INFO L435 NwaCegarLoop]: 1593 mSDtfsCounter, 1497 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 1668 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 07:19:53,352 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1497 Valid, 1668 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 07:19:53,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2025-03-08 07:19:53,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 1099. [2025-03-08 07:19:53,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1097 states have (on average 1.7711941659070192) internal successors, (1943), 1098 states have internal predecessors, (1943), 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 07:19:53,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1943 transitions. [2025-03-08 07:19:53,370 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1943 transitions. Word has length 58 [2025-03-08 07:19:53,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:19:53,371 INFO L471 AbstractCegarLoop]: Abstraction has 1099 states and 1943 transitions. [2025-03-08 07:19:53,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 07:19:53,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1943 transitions. [2025-03-08 07:19:53,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-03-08 07:19:53,371 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:19:53,372 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] [2025-03-08 07:19:53,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 07:19:53,372 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:19:53,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:19:53,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1778951699, now seen corresponding path program 1 times [2025-03-08 07:19:53,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:19:53,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142333797] [2025-03-08 07:19:53,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:19:53,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:19:53,382 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-03-08 07:19:53,386 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-03-08 07:19:53,386 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:19:53,386 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:19:53,408 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 07:19:53,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:19:53,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142333797] [2025-03-08 07:19:53,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142333797] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:19:53,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:19:53,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 07:19:53,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197681584] [2025-03-08 07:19:53,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:19:53,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 07:19:53,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:19:53,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 07:19:53,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:19:53,409 INFO L87 Difference]: Start difference. First operand 1099 states and 1943 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 07:19:53,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:19:53,431 INFO L93 Difference]: Finished difference Result 1683 states and 2821 transitions. [2025-03-08 07:19:53,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 07:19:53,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2025-03-08 07:19:53,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:19:53,436 INFO L225 Difference]: With dead ends: 1683 [2025-03-08 07:19:53,436 INFO L226 Difference]: Without dead ends: 1375 [2025-03-08 07:19:53,437 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 07:19:53,437 INFO L435 NwaCegarLoop]: 1591 mSDtfsCounter, 1495 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 1670 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 07:19:53,437 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1495 Valid, 1670 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 07:19:53,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2025-03-08 07:19:53,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 1373. [2025-03-08 07:19:53,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1373 states, 1371 states have (on average 1.7104303428154632) internal successors, (2345), 1372 states have internal predecessors, (2345), 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 07:19:53,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 2345 transitions. [2025-03-08 07:19:53,462 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 2345 transitions. Word has length 58 [2025-03-08 07:19:53,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:19:53,464 INFO L471 AbstractCegarLoop]: Abstraction has 1373 states and 2345 transitions. [2025-03-08 07:19:53,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 07:19:53,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 2345 transitions. [2025-03-08 07:19:53,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-03-08 07:19:53,465 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:19:53,465 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] [2025-03-08 07:19:53,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 07:19:53,465 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:19:53,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:19:53,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1363775827, now seen corresponding path program 1 times [2025-03-08 07:19:53,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:19:53,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744389304] [2025-03-08 07:19:53,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:19:53,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:19:53,475 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-03-08 07:19:53,479 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-03-08 07:19:53,480 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:19:53,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:19:53,505 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 07:19:53,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:19:53,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744389304] [2025-03-08 07:19:53,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744389304] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:19:53,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:19:53,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 07:19:53,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859418922] [2025-03-08 07:19:53,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:19:53,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 07:19:53,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:19:53,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 07:19:53,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:19:53,506 INFO L87 Difference]: Start difference. First operand 1373 states and 2345 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 07:19:53,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:19:53,532 INFO L93 Difference]: Finished difference Result 2473 states and 3971 transitions. [2025-03-08 07:19:53,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 07:19:53,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2025-03-08 07:19:53,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:19:53,538 INFO L225 Difference]: With dead ends: 2473 [2025-03-08 07:19:53,538 INFO L226 Difference]: Without dead ends: 1891 [2025-03-08 07:19:53,539 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 07:19:53,540 INFO L435 NwaCegarLoop]: 1589 mSDtfsCounter, 1493 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 1672 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 07:19:53,540 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 1672 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 07:19:53,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2025-03-08 07:19:53,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1889. [2025-03-08 07:19:53,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1889 states, 1887 states have (on average 1.634870164281929) internal successors, (3085), 1888 states have internal predecessors, (3085), 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 07:19:53,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 3085 transitions. [2025-03-08 07:19:53,572 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 3085 transitions. Word has length 58 [2025-03-08 07:19:53,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:19:53,572 INFO L471 AbstractCegarLoop]: Abstraction has 1889 states and 3085 transitions. [2025-03-08 07:19:53,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 07:19:53,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 3085 transitions. [2025-03-08 07:19:53,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-03-08 07:19:53,573 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:19:53,573 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] [2025-03-08 07:19:53,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 07:19:53,573 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:19:53,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:19:53,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1850494099, now seen corresponding path program 1 times [2025-03-08 07:19:53,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:19:53,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510054634] [2025-03-08 07:19:53,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:19:53,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:19:53,584 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-03-08 07:19:53,590 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-03-08 07:19:53,590 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:19:53,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:19:53,613 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 07:19:53,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:19:53,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510054634] [2025-03-08 07:19:53,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510054634] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:19:53,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:19:53,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 07:19:53,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990366480] [2025-03-08 07:19:53,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:19:53,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 07:19:53,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:19:53,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 07:19:53,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:19:53,614 INFO L87 Difference]: Start difference. First operand 1889 states and 3085 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 07:19:53,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:19:53,648 INFO L93 Difference]: Finished difference Result 3957 states and 6079 transitions. [2025-03-08 07:19:53,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 07:19:53,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2025-03-08 07:19:53,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:19:53,656 INFO L225 Difference]: With dead ends: 3957 [2025-03-08 07:19:53,656 INFO L226 Difference]: Without dead ends: 2859 [2025-03-08 07:19:53,657 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 07:19:53,657 INFO L435 NwaCegarLoop]: 1587 mSDtfsCounter, 1491 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 1674 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 07:19:53,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1491 Valid, 1674 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 07:19:53,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2859 states. [2025-03-08 07:19:53,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2859 to 2857. [2025-03-08 07:19:53,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2857 states, 2855 states have (on average 1.5541155866900176) internal successors, (4437), 2856 states have internal predecessors, (4437), 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 07:19:53,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2857 states to 2857 states and 4437 transitions. [2025-03-08 07:19:53,704 INFO L78 Accepts]: Start accepts. Automaton has 2857 states and 4437 transitions. Word has length 58 [2025-03-08 07:19:53,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:19:53,704 INFO L471 AbstractCegarLoop]: Abstraction has 2857 states and 4437 transitions. [2025-03-08 07:19:53,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 07:19:53,705 INFO L276 IsEmpty]: Start isEmpty. Operand 2857 states and 4437 transitions. [2025-03-08 07:19:53,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-03-08 07:19:53,705 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:19:53,705 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] [2025-03-08 07:19:53,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 07:19:53,705 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:19:53,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:19:53,706 INFO L85 PathProgramCache]: Analyzing trace with hash 291030893, now seen corresponding path program 1 times [2025-03-08 07:19:53,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:19:53,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249522244] [2025-03-08 07:19:53,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:19:53,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:19:53,715 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-03-08 07:19:53,720 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-03-08 07:19:53,721 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:19:53,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:19:53,747 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 07:19:53,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:19:53,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249522244] [2025-03-08 07:19:53,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249522244] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:19:53,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:19:53,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 07:19:53,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747717770] [2025-03-08 07:19:53,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:19:53,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 07:19:53,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:19:53,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 07:19:53,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:19:53,749 INFO L87 Difference]: Start difference. First operand 2857 states and 4437 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 07:19:53,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:19:53,794 INFO L93 Difference]: Finished difference Result 5040 states and 7611 transitions. [2025-03-08 07:19:53,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 07:19:53,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2025-03-08 07:19:53,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:19:53,806 INFO L225 Difference]: With dead ends: 5040 [2025-03-08 07:19:53,807 INFO L226 Difference]: Without dead ends: 3853 [2025-03-08 07:19:53,809 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 07:19:53,809 INFO L435 NwaCegarLoop]: 1598 mSDtfsCounter, 1496 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1669 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 07:19:53,810 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1669 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 07:19:53,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3853 states. [2025-03-08 07:19:53,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3853 to 3851. [2025-03-08 07:19:53,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3851 states, 3849 states have (on average 1.5149389451805664) internal successors, (5831), 3850 states have internal predecessors, (5831), 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 07:19:53,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3851 states to 3851 states and 5831 transitions. [2025-03-08 07:19:53,885 INFO L78 Accepts]: Start accepts. Automaton has 3851 states and 5831 transitions. Word has length 60 [2025-03-08 07:19:53,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:19:53,885 INFO L471 AbstractCegarLoop]: Abstraction has 3851 states and 5831 transitions. [2025-03-08 07:19:53,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 07:19:53,886 INFO L276 IsEmpty]: Start isEmpty. Operand 3851 states and 5831 transitions. [2025-03-08 07:19:53,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-08 07:19:53,886 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:19:53,886 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] [2025-03-08 07:19:53,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 07:19:53,886 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:19:53,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:19:53,887 INFO L85 PathProgramCache]: Analyzing trace with hash -767005893, now seen corresponding path program 1 times [2025-03-08 07:19:53,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:19:53,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389373636] [2025-03-08 07:19:53,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:19:53,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:19:53,893 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-08 07:19:53,897 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-08 07:19:53,897 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:19:53,897 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:19:53,926 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 07:19:53,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:19:53,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389373636] [2025-03-08 07:19:53,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389373636] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:19:53,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:19:53,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 07:19:53,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308840547] [2025-03-08 07:19:53,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:19:53,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 07:19:53,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:19:53,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 07:19:53,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:19:53,928 INFO L87 Difference]: Start difference. First operand 3851 states and 5831 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 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 07:19:56,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:19:56,520 INFO L93 Difference]: Finished difference Result 5355 states and 8704 transitions. [2025-03-08 07:19:56,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 07:19:56,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 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 61 [2025-03-08 07:19:56,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:19:56,532 INFO L225 Difference]: With dead ends: 5355 [2025-03-08 07:19:56,533 INFO L226 Difference]: Without dead ends: 4602 [2025-03-08 07:19:56,534 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:19:56,534 INFO L435 NwaCegarLoop]: 575 mSDtfsCounter, 847 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-08 07:19:56,535 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 582 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-08 07:19:56,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4602 states. [2025-03-08 07:19:56,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4602 to 4602. [2025-03-08 07:19:56,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4602 states, 4600 states have (on average 1.4804347826086957) internal successors, (6810), 4601 states have internal predecessors, (6810), 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 07:19:56,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4602 states to 4602 states and 6810 transitions. [2025-03-08 07:19:56,612 INFO L78 Accepts]: Start accepts. Automaton has 4602 states and 6810 transitions. Word has length 61 [2025-03-08 07:19:56,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:19:56,612 INFO L471 AbstractCegarLoop]: Abstraction has 4602 states and 6810 transitions. [2025-03-08 07:19:56,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 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 07:19:56,612 INFO L276 IsEmpty]: Start isEmpty. Operand 4602 states and 6810 transitions. [2025-03-08 07:19:56,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-03-08 07:19:56,613 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:19:56,613 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 07:19:56,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 07:19:56,614 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:19:56,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:19:56,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1155468229, now seen corresponding path program 1 times [2025-03-08 07:19:56,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:19:56,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894262828] [2025-03-08 07:19:56,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:19:56,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:19:56,622 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-03-08 07:19:56,629 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-03-08 07:19:56,629 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:19:56,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:19:56,722 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 07:19:56,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:19:56,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894262828] [2025-03-08 07:19:56,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894262828] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:19:56,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:19:56,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 07:19:56,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498826757] [2025-03-08 07:19:56,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:19:56,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 07:19:56,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:19:56,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 07:19:56,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-08 07:19:56,724 INFO L87 Difference]: Start difference. First operand 4602 states and 6810 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 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 07:19:56,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:19:56,973 INFO L93 Difference]: Finished difference Result 20550 states and 29472 transitions. [2025-03-08 07:19:56,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 07:19:56,973 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 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 07:19:56,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:19:57,076 INFO L225 Difference]: With dead ends: 20550 [2025-03-08 07:19:57,077 INFO L226 Difference]: Without dead ends: 17492 [2025-03-08 07:19:57,082 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-03-08 07:19:57,082 INFO L435 NwaCegarLoop]: 1613 mSDtfsCounter, 6328 mSDsluCounter, 2047 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6328 SdHoareTripleChecker+Valid, 3660 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 07:19:57,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6328 Valid, 3660 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 07:19:57,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17492 states. [2025-03-08 07:19:57,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17492 to 7658. [2025-03-08 07:19:57,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7658 states, 7656 states have (on average 1.4516718913270636) internal successors, (11114), 7657 states have internal predecessors, (11114), 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 07:19:57,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7658 states to 7658 states and 11114 transitions. [2025-03-08 07:19:57,263 INFO L78 Accepts]: Start accepts. Automaton has 7658 states and 11114 transitions. Word has length 77 [2025-03-08 07:19:57,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:19:57,263 INFO L471 AbstractCegarLoop]: Abstraction has 7658 states and 11114 transitions. [2025-03-08 07:19:57,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 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 07:19:57,263 INFO L276 IsEmpty]: Start isEmpty. Operand 7658 states and 11114 transitions. [2025-03-08 07:19:57,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-03-08 07:19:57,265 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:19:57,265 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 07:19:57,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 07:19:57,265 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:19:57,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:19:57,266 INFO L85 PathProgramCache]: Analyzing trace with hash 707522693, now seen corresponding path program 1 times [2025-03-08 07:19:57,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:19:57,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638902158] [2025-03-08 07:19:57,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:19:57,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:19:57,273 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-03-08 07:19:57,280 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-03-08 07:19:57,281 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:19:57,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:19:57,375 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-08 07:19:57,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:19:57,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638902158] [2025-03-08 07:19:57,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638902158] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:19:57,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:19:57,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 07:19:57,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561958201] [2025-03-08 07:19:57,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:19:57,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 07:19:57,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:19:57,377 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 07:19:57,377 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-08 07:19:57,377 INFO L87 Difference]: Start difference. First operand 7658 states and 11114 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 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 07:19:57,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:19:57,642 INFO L93 Difference]: Finished difference Result 23606 states and 33776 transitions. [2025-03-08 07:19:57,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 07:19:57,643 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 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 07:19:57,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:19:57,678 INFO L225 Difference]: With dead ends: 23606 [2025-03-08 07:19:57,678 INFO L226 Difference]: Without dead ends: 20548 [2025-03-08 07:19:57,688 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-03-08 07:19:57,689 INFO L435 NwaCegarLoop]: 1610 mSDtfsCounter, 6353 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6353 SdHoareTripleChecker+Valid, 3588 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 07:19:57,689 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6353 Valid, 3588 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 07:19:57,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20548 states. [2025-03-08 07:19:58,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20548 to 12250. [2025-03-08 07:19:58,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12250 states, 12248 states have (on average 1.4312540822991509) internal successors, (17530), 12249 states have internal predecessors, (17530), 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 07:19:58,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12250 states to 12250 states and 17530 transitions. [2025-03-08 07:19:58,072 INFO L78 Accepts]: Start accepts. Automaton has 12250 states and 17530 transitions. Word has length 77 [2025-03-08 07:19:58,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:19:58,072 INFO L471 AbstractCegarLoop]: Abstraction has 12250 states and 17530 transitions. [2025-03-08 07:19:58,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 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 07:19:58,073 INFO L276 IsEmpty]: Start isEmpty. Operand 12250 states and 17530 transitions. [2025-03-08 07:19:58,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-03-08 07:19:58,075 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:19:58,075 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 07:19:58,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-08 07:19:58,075 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:19:58,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:19:58,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1122698565, now seen corresponding path program 1 times [2025-03-08 07:19:58,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:19:58,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934259978] [2025-03-08 07:19:58,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:19:58,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:19:58,086 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-03-08 07:19:58,093 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-03-08 07:19:58,093 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:19:58,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:19:58,185 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-08 07:19:58,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:19:58,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934259978] [2025-03-08 07:19:58,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934259978] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:19:58,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:19:58,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 07:19:58,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473727521] [2025-03-08 07:19:58,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:19:58,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 07:19:58,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:19:58,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 07:19:58,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-08 07:19:58,187 INFO L87 Difference]: Start difference. First operand 12250 states and 17530 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 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 07:19:58,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:19:58,482 INFO L93 Difference]: Finished difference Result 26662 states and 38080 transitions. [2025-03-08 07:19:58,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 07:19:58,482 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 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 07:19:58,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:19:58,521 INFO L225 Difference]: With dead ends: 26662 [2025-03-08 07:19:58,522 INFO L226 Difference]: Without dead ends: 23604 [2025-03-08 07:19:58,533 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-03-08 07:19:58,534 INFO L435 NwaCegarLoop]: 1607 mSDtfsCounter, 6398 mSDsluCounter, 1952 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6398 SdHoareTripleChecker+Valid, 3559 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 07:19:58,534 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6398 Valid, 3559 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 07:19:58,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23604 states. [2025-03-08 07:19:58,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23604 to 15306. [2025-03-08 07:19:58,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15306 states, 15304 states have (on average 1.4266858337689492) internal successors, (21834), 15305 states have internal predecessors, (21834), 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 07:19:58,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15306 states to 15306 states and 21834 transitions. [2025-03-08 07:19:58,852 INFO L78 Accepts]: Start accepts. Automaton has 15306 states and 21834 transitions. Word has length 77 [2025-03-08 07:19:58,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:19:58,853 INFO L471 AbstractCegarLoop]: Abstraction has 15306 states and 21834 transitions. [2025-03-08 07:19:58,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 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 07:19:58,853 INFO L276 IsEmpty]: Start isEmpty. Operand 15306 states and 21834 transitions. [2025-03-08 07:19:58,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-03-08 07:19:58,854 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:19:58,855 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 07:19:58,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-08 07:19:58,855 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:19:58,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:19:58,855 INFO L85 PathProgramCache]: Analyzing trace with hash 635980293, now seen corresponding path program 1 times [2025-03-08 07:19:58,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:19:58,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748114428] [2025-03-08 07:19:58,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:19:58,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:19:58,862 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-03-08 07:19:58,874 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-03-08 07:19:58,874 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:19:58,874 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:19:58,967 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-08 07:19:58,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:19:58,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748114428] [2025-03-08 07:19:58,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748114428] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:19:58,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:19:58,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 07:19:58,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654704336] [2025-03-08 07:19:58,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:19:58,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 07:19:58,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:19:58,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 07:19:58,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-08 07:19:58,968 INFO L87 Difference]: Start difference. First operand 15306 states and 21834 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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 07:19:59,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:19:59,351 INFO L93 Difference]: Finished difference Result 29718 states and 42384 transitions. [2025-03-08 07:19:59,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 07:19:59,352 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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 07:19:59,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:19:59,385 INFO L225 Difference]: With dead ends: 29718 [2025-03-08 07:19:59,385 INFO L226 Difference]: Without dead ends: 26660 [2025-03-08 07:19:59,391 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-03-08 07:19:59,392 INFO L435 NwaCegarLoop]: 1613 mSDtfsCounter, 6347 mSDsluCounter, 2008 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6347 SdHoareTripleChecker+Valid, 3621 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 07:19:59,392 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6347 Valid, 3621 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 07:19:59,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26660 states. [2025-03-08 07:19:59,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26660 to 18362. [2025-03-08 07:19:59,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18362 states, 18360 states have (on average 1.4236383442265794) internal successors, (26138), 18361 states have internal predecessors, (26138), 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 07:19:59,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18362 states to 18362 states and 26138 transitions. [2025-03-08 07:19:59,717 INFO L78 Accepts]: Start accepts. Automaton has 18362 states and 26138 transitions. Word has length 77 [2025-03-08 07:19:59,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:19:59,717 INFO L471 AbstractCegarLoop]: Abstraction has 18362 states and 26138 transitions. [2025-03-08 07:19:59,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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 07:19:59,717 INFO L276 IsEmpty]: Start isEmpty. Operand 18362 states and 26138 transitions. [2025-03-08 07:19:59,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-03-08 07:19:59,719 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:19:59,719 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 07:19:59,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-08 07:19:59,719 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:19:59,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:19:59,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1791105029, now seen corresponding path program 1 times [2025-03-08 07:19:59,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:19:59,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053808459] [2025-03-08 07:19:59,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:19:59,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:19:59,727 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-08 07:19:59,733 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-08 07:19:59,733 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:19:59,733 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:19:59,816 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-08 07:19:59,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:19:59,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053808459] [2025-03-08 07:19:59,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053808459] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:19:59,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:19:59,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 07:19:59,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825973964] [2025-03-08 07:19:59,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:19:59,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 07:19:59,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:19:59,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 07:19:59,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-08 07:19:59,818 INFO L87 Difference]: Start difference. First operand 18362 states and 26138 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 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 07:20:00,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:20:00,229 INFO L93 Difference]: Finished difference Result 31014 states and 44256 transitions. [2025-03-08 07:20:00,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 07:20:00,229 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 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 07:20:00,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:20:00,266 INFO L225 Difference]: With dead ends: 31014 [2025-03-08 07:20:00,266 INFO L226 Difference]: Without dead ends: 28836 [2025-03-08 07:20:00,275 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-03-08 07:20:00,276 INFO L435 NwaCegarLoop]: 1614 mSDtfsCounter, 6324 mSDsluCounter, 2142 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6324 SdHoareTripleChecker+Valid, 3756 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 07:20:00,276 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6324 Valid, 3756 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 07:20:00,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28836 states. [2025-03-08 07:20:00,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28836 to 20538. [2025-03-08 07:20:00,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20538 states, 20536 states have (on average 1.4239384495520062) internal successors, (29242), 20537 states have internal predecessors, (29242), 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 07:20:00,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20538 states to 20538 states and 29242 transitions. [2025-03-08 07:20:00,736 INFO L78 Accepts]: Start accepts. Automaton has 20538 states and 29242 transitions. Word has length 79 [2025-03-08 07:20:00,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:20:00,737 INFO L471 AbstractCegarLoop]: Abstraction has 20538 states and 29242 transitions. [2025-03-08 07:20:00,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 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 07:20:00,737 INFO L276 IsEmpty]: Start isEmpty. Operand 20538 states and 29242 transitions. [2025-03-08 07:20:00,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-03-08 07:20:00,740 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:20:00,740 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 07:20:00,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-08 07:20:00,740 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:20:00,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:20:00,741 INFO L85 PathProgramCache]: Analyzing trace with hash -838885117, now seen corresponding path program 1 times [2025-03-08 07:20:00,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:20:00,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011907326] [2025-03-08 07:20:00,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:20:00,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:20:00,754 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-08 07:20:00,768 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-08 07:20:00,768 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:20:00,768 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:20:00,830 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:20:00,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:20:00,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011907326] [2025-03-08 07:20:00,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011907326] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:20:00,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:20:00,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 07:20:00,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309334530] [2025-03-08 07:20:00,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:20:00,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 07:20:00,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:20:00,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 07:20:00,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:20:00,832 INFO L87 Difference]: Start difference. First operand 20538 states and 29242 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 07:20:01,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:20:01,119 INFO L93 Difference]: Finished difference Result 34706 states and 49441 transitions. [2025-03-08 07:20:01,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 07:20:01,120 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 07:20:01,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:20:01,148 INFO L225 Difference]: With dead ends: 34706 [2025-03-08 07:20:01,148 INFO L226 Difference]: Without dead ends: 15712 [2025-03-08 07:20:01,165 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 07:20:01,166 INFO L435 NwaCegarLoop]: 1586 mSDtfsCounter, 50 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 3117 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 07:20:01,166 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 3117 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 07:20:01,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15712 states. [2025-03-08 07:20:01,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15712 to 15710. [2025-03-08 07:20:01,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15710 states, 15708 states have (on average 1.4289533995416348) internal successors, (22446), 15709 states have internal predecessors, (22446), 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 07:20:01,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15710 states to 15710 states and 22446 transitions. [2025-03-08 07:20:01,549 INFO L78 Accepts]: Start accepts. Automaton has 15710 states and 22446 transitions. Word has length 79 [2025-03-08 07:20:01,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:20:01,549 INFO L471 AbstractCegarLoop]: Abstraction has 15710 states and 22446 transitions. [2025-03-08 07:20:01,549 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 07:20:01,549 INFO L276 IsEmpty]: Start isEmpty. Operand 15710 states and 22446 transitions. [2025-03-08 07:20:01,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-03-08 07:20:01,551 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:20:01,551 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 07:20:01,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-08 07:20:01,551 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:20:01,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:20:01,552 INFO L85 PathProgramCache]: Analyzing trace with hash 97319945, now seen corresponding path program 1 times [2025-03-08 07:20:01,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:20:01,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678756005] [2025-03-08 07:20:01,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:20:01,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:20:01,565 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-03-08 07:20:01,579 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-03-08 07:20:01,582 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:20:01,583 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:20:01,641 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:20:01,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:20:01,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678756005] [2025-03-08 07:20:01,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678756005] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:20:01,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:20:01,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 07:20:01,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459060501] [2025-03-08 07:20:01,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:20:01,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 07:20:01,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:20:01,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 07:20:01,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:20:01,643 INFO L87 Difference]: Start difference. First operand 15710 states and 22446 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 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 07:20:01,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:20:01,801 INFO L93 Difference]: Finished difference Result 22786 states and 32432 transitions. [2025-03-08 07:20:01,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 07:20:01,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 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 07:20:01,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:20:01,814 INFO L225 Difference]: With dead ends: 22786 [2025-03-08 07:20:01,815 INFO L226 Difference]: Without dead ends: 8640 [2025-03-08 07:20:01,826 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 07:20:01,826 INFO L435 NwaCegarLoop]: 1579 mSDtfsCounter, 45 mSDsluCounter, 1523 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3102 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 07:20:01,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3102 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 07:20:01,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8640 states. [2025-03-08 07:20:01,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8640 to 8638. [2025-03-08 07:20:01,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8638 states, 8636 states have (on average 1.4309865678554887) internal successors, (12358), 8637 states have internal predecessors, (12358), 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 07:20:01,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8638 states to 8638 states and 12358 transitions. [2025-03-08 07:20:01,972 INFO L78 Accepts]: Start accepts. Automaton has 8638 states and 12358 transitions. Word has length 80 [2025-03-08 07:20:01,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:20:01,973 INFO L471 AbstractCegarLoop]: Abstraction has 8638 states and 12358 transitions. [2025-03-08 07:20:01,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 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 07:20:01,973 INFO L276 IsEmpty]: Start isEmpty. Operand 8638 states and 12358 transitions. [2025-03-08 07:20:01,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-03-08 07:20:01,974 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:20:01,974 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 07:20:01,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-08 07:20:01,975 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:20:01,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:20:01,976 INFO L85 PathProgramCache]: Analyzing trace with hash -755676880, now seen corresponding path program 1 times [2025-03-08 07:20:01,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:20:01,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994517825] [2025-03-08 07:20:01,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:20:01,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:20:01,984 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-03-08 07:20:01,996 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-03-08 07:20:01,997 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:20:01,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:20:02,044 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:20:02,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:20:02,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994517825] [2025-03-08 07:20:02,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994517825] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:20:02,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:20:02,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 07:20:02,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215697009] [2025-03-08 07:20:02,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:20:02,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 07:20:02,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:20:02,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 07:20:02,045 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:20:02,045 INFO L87 Difference]: Start difference. First operand 8638 states and 12358 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 07:20:02,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:20:02,173 INFO L93 Difference]: Finished difference Result 12178 states and 17300 transitions. [2025-03-08 07:20:02,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 07:20:02,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 82 [2025-03-08 07:20:02,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:20:02,180 INFO L225 Difference]: With dead ends: 12178 [2025-03-08 07:20:02,180 INFO L226 Difference]: Without dead ends: 5104 [2025-03-08 07:20:02,185 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 07:20:02,185 INFO L435 NwaCegarLoop]: 1572 mSDtfsCounter, 42 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3087 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 07:20:02,185 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 3087 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 07:20:02,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5104 states. [2025-03-08 07:20:02,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5104 to 5102. [2025-03-08 07:20:02,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5102 states, 5100 states have (on average 1.444313725490196) internal successors, (7366), 5101 states have internal predecessors, (7366), 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 07:20:02,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5102 states to 5102 states and 7366 transitions. [2025-03-08 07:20:02,252 INFO L78 Accepts]: Start accepts. Automaton has 5102 states and 7366 transitions. Word has length 82 [2025-03-08 07:20:02,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:20:02,252 INFO L471 AbstractCegarLoop]: Abstraction has 5102 states and 7366 transitions. [2025-03-08 07:20:02,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 07:20:02,252 INFO L276 IsEmpty]: Start isEmpty. Operand 5102 states and 7366 transitions. [2025-03-08 07:20:02,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-03-08 07:20:02,253 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:20:02,253 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 07:20:02,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-08 07:20:02,253 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:20:02,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:20:02,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1816537225, now seen corresponding path program 1 times [2025-03-08 07:20:02,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:20:02,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214379031] [2025-03-08 07:20:02,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:20:02,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:20:02,260 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-03-08 07:20:02,267 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-03-08 07:20:02,268 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:20:02,268 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:20:02,310 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:20:02,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:20:02,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214379031] [2025-03-08 07:20:02,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214379031] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:20:02,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:20:02,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 07:20:02,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622182521] [2025-03-08 07:20:02,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:20:02,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 07:20:02,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:20:02,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 07:20:02,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:20:02,312 INFO L87 Difference]: Start difference. First operand 5102 states and 7366 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 07:20:02,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:20:02,348 INFO L93 Difference]: Finished difference Result 6874 states and 9812 transitions. [2025-03-08 07:20:02,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 07:20:02,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 84 [2025-03-08 07:20:02,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:20:02,353 INFO L225 Difference]: With dead ends: 6874 [2025-03-08 07:20:02,353 INFO L226 Difference]: Without dead ends: 3336 [2025-03-08 07:20:02,356 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 07:20:02,358 INFO L435 NwaCegarLoop]: 1565 mSDtfsCounter, 39 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3072 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 07:20:02,358 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3072 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 07:20:02,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3336 states. [2025-03-08 07:20:02,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3336 to 3334. [2025-03-08 07:20:02,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3334 states, 3332 states have (on average 1.469387755102041) internal successors, (4896), 3333 states have internal predecessors, (4896), 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 07:20:02,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3334 states to 3334 states and 4896 transitions. [2025-03-08 07:20:02,400 INFO L78 Accepts]: Start accepts. Automaton has 3334 states and 4896 transitions. Word has length 84 [2025-03-08 07:20:02,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:20:02,401 INFO L471 AbstractCegarLoop]: Abstraction has 3334 states and 4896 transitions. [2025-03-08 07:20:02,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 07:20:02,401 INFO L276 IsEmpty]: Start isEmpty. Operand 3334 states and 4896 transitions. [2025-03-08 07:20:02,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2025-03-08 07:20:02,402 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:20:02,402 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 07:20:02,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-08 07:20:02,402 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:20:02,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:20:02,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1212344610, now seen corresponding path program 1 times [2025-03-08 07:20:02,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:20:02,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226022515] [2025-03-08 07:20:02,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:20:02,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:20:02,411 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 86 statements into 1 equivalence classes. [2025-03-08 07:20:02,421 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 86 of 86 statements. [2025-03-08 07:20:02,421 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:20:02,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:20:02,465 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:20:02,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:20:02,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226022515] [2025-03-08 07:20:02,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226022515] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:20:02,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:20:02,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 07:20:02,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836988477] [2025-03-08 07:20:02,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:20:02,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 07:20:02,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:20:02,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 07:20:02,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 07:20:02,468 INFO L87 Difference]: Start difference. First operand 3334 states and 4896 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 07:20:02,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:20:02,494 INFO L93 Difference]: Finished difference Result 4222 states and 6107 transitions. [2025-03-08 07:20:02,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 07:20:02,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 86 [2025-03-08 07:20:02,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:20:02,498 INFO L225 Difference]: With dead ends: 4222 [2025-03-08 07:20:02,499 INFO L226 Difference]: Without dead ends: 2452 [2025-03-08 07:20:02,501 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 07:20:02,502 INFO L435 NwaCegarLoop]: 1558 mSDtfsCounter, 36 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3057 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 07:20:02,504 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3057 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 07:20:02,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2452 states. [2025-03-08 07:20:02,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2452 to 2450. [2025-03-08 07:20:02,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2450 states, 2448 states have (on average 1.5008169934640523) internal successors, (3674), 2449 states have internal predecessors, (3674), 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 07:20:02,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2450 states to 2450 states and 3674 transitions. [2025-03-08 07:20:02,531 INFO L78 Accepts]: Start accepts. Automaton has 2450 states and 3674 transitions. Word has length 86 [2025-03-08 07:20:02,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:20:02,532 INFO L471 AbstractCegarLoop]: Abstraction has 2450 states and 3674 transitions. [2025-03-08 07:20:02,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 07:20:02,532 INFO L276 IsEmpty]: Start isEmpty. Operand 2450 states and 3674 transitions. [2025-03-08 07:20:02,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-08 07:20:02,532 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:20:02,533 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 07:20:02,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-08 07:20:02,533 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:20:02,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:20:02,533 INFO L85 PathProgramCache]: Analyzing trace with hash -705464475, now seen corresponding path program 1 times [2025-03-08 07:20:02,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:20:02,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126521121] [2025-03-08 07:20:02,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:20:02,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:20:02,540 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-08 07:20:02,552 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-08 07:20:02,553 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:20:02,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:20:02,836 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:20:02,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:20:02,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126521121] [2025-03-08 07:20:02,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126521121] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 07:20:02,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643007489] [2025-03-08 07:20:02,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:20:02,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:20:02,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:20:02,839 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 07:20:02,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 07:20:02,907 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-08 07:20:02,948 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-08 07:20:02,948 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:20:02,948 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:20:02,953 INFO L256 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-08 07:20:02,957 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 07:20:03,248 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:20:03,249 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 07:20:03,507 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:20:03,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643007489] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 07:20:03,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 07:20:03,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 6] total 19 [2025-03-08 07:20:03,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086974321] [2025-03-08 07:20:03,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 07:20:03,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-08 07:20:03,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:20:03,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-08 07:20:03,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2025-03-08 07:20:03,509 INFO L87 Difference]: Start difference. First operand 2450 states and 3674 transitions. Second operand has 19 states, 19 states have (on average 13.210526315789474) internal successors, (251), 19 states have internal predecessors, (251), 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 07:20:05,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:20:05,627 INFO L93 Difference]: Finished difference Result 9500 states and 12991 transitions. [2025-03-08 07:20:05,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2025-03-08 07:20:05,627 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 13.210526315789474) internal successors, (251), 19 states have internal predecessors, (251), 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 88 [2025-03-08 07:20:05,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:20:05,636 INFO L225 Difference]: With dead ends: 9500 [2025-03-08 07:20:05,636 INFO L226 Difference]: Without dead ends: 8528 [2025-03-08 07:20:05,638 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1336 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=913, Invalid=3509, Unknown=0, NotChecked=0, Total=4422 [2025-03-08 07:20:05,639 INFO L435 NwaCegarLoop]: 1558 mSDtfsCounter, 13450 mSDsluCounter, 8149 mSDsCounter, 0 mSdLazyCounter, 1599 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13450 SdHoareTripleChecker+Valid, 9707 SdHoareTripleChecker+Invalid, 1680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-08 07:20:05,639 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13450 Valid, 9707 Invalid, 1680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1599 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-08 07:20:05,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8528 states. [2025-03-08 07:20:05,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8528 to 7918. [2025-03-08 07:20:05,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7918 states, 7916 states have (on average 1.361167256189995) internal successors, (10775), 7917 states have internal predecessors, (10775), 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 07:20:05,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7918 states to 7918 states and 10775 transitions. [2025-03-08 07:20:05,784 INFO L78 Accepts]: Start accepts. Automaton has 7918 states and 10775 transitions. Word has length 88 [2025-03-08 07:20:05,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:20:05,784 INFO L471 AbstractCegarLoop]: Abstraction has 7918 states and 10775 transitions. [2025-03-08 07:20:05,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 13.210526315789474) internal successors, (251), 19 states have internal predecessors, (251), 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 07:20:05,784 INFO L276 IsEmpty]: Start isEmpty. Operand 7918 states and 10775 transitions. [2025-03-08 07:20:05,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-08 07:20:05,785 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:20:05,785 INFO L218 NwaCegarLoop]: trace histogram [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, 1] [2025-03-08 07:20:05,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-08 07:20:05,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-03-08 07:20:05,985 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:20:05,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:20:05,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1536780076, now seen corresponding path program 1 times [2025-03-08 07:20:05,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:20:05,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903363332] [2025-03-08 07:20:05,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:20:05,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:20:05,993 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-08 07:20:06,004 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-08 07:20:06,004 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:20:06,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:20:06,243 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:20:06,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:20:06,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903363332] [2025-03-08 07:20:06,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903363332] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 07:20:06,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569931210] [2025-03-08 07:20:06,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:20:06,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:20:06,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:20:06,246 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 07:20:06,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 07:20:06,307 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-08 07:20:06,343 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-08 07:20:06,344 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:20:06,344 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:20:06,345 INFO L256 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-08 07:20:06,347 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 07:20:06,820 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:20:06,820 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 07:20:07,612 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:20:07,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569931210] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 07:20:07,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 07:20:07,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2025-03-08 07:20:07,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967358697] [2025-03-08 07:20:07,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 07:20:07,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-03-08 07:20:07,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:20:07,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-03-08 07:20:07,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=880, Unknown=0, NotChecked=0, Total=992 [2025-03-08 07:20:07,613 INFO L87 Difference]: Start difference. First operand 7918 states and 10775 transitions. Second operand has 32 states, 32 states have (on average 6.84375) internal successors, (219), 32 states have internal predecessors, (219), 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 07:20:09,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:20:09,087 INFO L93 Difference]: Finished difference Result 18400 states and 24473 transitions. [2025-03-08 07:20:09,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-03-08 07:20:09,088 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.84375) internal successors, (219), 32 states have internal predecessors, (219), 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 89 [2025-03-08 07:20:09,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:20:09,099 INFO L225 Difference]: With dead ends: 18400 [2025-03-08 07:20:09,099 INFO L226 Difference]: Without dead ends: 12082 [2025-03-08 07:20:09,107 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=608, Invalid=2698, Unknown=0, NotChecked=0, Total=3306 [2025-03-08 07:20:09,107 INFO L435 NwaCegarLoop]: 1504 mSDtfsCounter, 13608 mSDsluCounter, 17080 mSDsCounter, 0 mSdLazyCounter, 1185 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13608 SdHoareTripleChecker+Valid, 18584 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 07:20:09,107 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13608 Valid, 18584 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1185 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 07:20:09,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12082 states. [2025-03-08 07:20:09,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12082 to 10492. [2025-03-08 07:20:09,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10492 states, 10490 states have (on average 1.3342230695900859) internal successors, (13996), 10491 states have internal predecessors, (13996), 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 07:20:09,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10492 states to 10492 states and 13996 transitions. [2025-03-08 07:20:09,336 INFO L78 Accepts]: Start accepts. Automaton has 10492 states and 13996 transitions. Word has length 89 [2025-03-08 07:20:09,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:20:09,336 INFO L471 AbstractCegarLoop]: Abstraction has 10492 states and 13996 transitions. [2025-03-08 07:20:09,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.84375) internal successors, (219), 32 states have internal predecessors, (219), 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 07:20:09,336 INFO L276 IsEmpty]: Start isEmpty. Operand 10492 states and 13996 transitions. [2025-03-08 07:20:09,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-08 07:20:09,337 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:20:09,337 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1] [2025-03-08 07:20:09,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-08 07:20:09,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-03-08 07:20:09,538 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:20:09,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:20:09,538 INFO L85 PathProgramCache]: Analyzing trace with hash 196015673, now seen corresponding path program 1 times [2025-03-08 07:20:09,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:20:09,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289619696] [2025-03-08 07:20:09,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:20:09,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:20:09,545 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-08 07:20:09,559 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-08 07:20:09,560 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:20:09,560 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:20:09,779 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:20:09,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:20:09,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289619696] [2025-03-08 07:20:09,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289619696] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 07:20:09,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700836024] [2025-03-08 07:20:09,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:20:09,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:20:09,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:20:09,781 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 07:20:09,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 07:20:09,842 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-08 07:20:09,887 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-08 07:20:09,887 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:20:09,887 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:20:09,892 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-08 07:20:09,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 07:20:10,413 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:20:10,414 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 07:20:11,173 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:20:11,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700836024] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 07:20:11,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 07:20:11,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 13] total 29 [2025-03-08 07:20:11,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902498859] [2025-03-08 07:20:11,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 07:20:11,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-03-08 07:20:11,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:20:11,174 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-03-08 07:20:11,174 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2025-03-08 07:20:11,175 INFO L87 Difference]: Start difference. First operand 10492 states and 13996 transitions. Second operand has 29 states, 29 states have (on average 8.344827586206897) internal successors, (242), 29 states have internal predecessors, (242), 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 07:20:12,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:20:12,353 INFO L93 Difference]: Finished difference Result 28968 states and 37970 transitions. [2025-03-08 07:20:12,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-08 07:20:12,353 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 8.344827586206897) internal successors, (242), 29 states have internal predecessors, (242), 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 90 [2025-03-08 07:20:12,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:20:12,371 INFO L225 Difference]: With dead ends: 28968 [2025-03-08 07:20:12,371 INFO L226 Difference]: Without dead ends: 20094 [2025-03-08 07:20:12,376 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=437, Invalid=1455, Unknown=0, NotChecked=0, Total=1892 [2025-03-08 07:20:12,376 INFO L435 NwaCegarLoop]: 1513 mSDtfsCounter, 16744 mSDsluCounter, 6370 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16744 SdHoareTripleChecker+Valid, 7883 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 07:20:12,376 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16744 Valid, 7883 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 07:20:12,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20094 states. [2025-03-08 07:20:12,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20094 to 19852. [2025-03-08 07:20:12,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19852 states, 19850 states have (on average 1.2998488664987407) internal successors, (25802), 19851 states have internal predecessors, (25802), 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 07:20:12,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19852 states to 19852 states and 25802 transitions. [2025-03-08 07:20:12,973 INFO L78 Accepts]: Start accepts. Automaton has 19852 states and 25802 transitions. Word has length 90 [2025-03-08 07:20:12,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:20:12,973 INFO L471 AbstractCegarLoop]: Abstraction has 19852 states and 25802 transitions. [2025-03-08 07:20:12,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 8.344827586206897) internal successors, (242), 29 states have internal predecessors, (242), 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 07:20:12,973 INFO L276 IsEmpty]: Start isEmpty. Operand 19852 states and 25802 transitions. [2025-03-08 07:20:12,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-08 07:20:12,974 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:20:12,974 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1] [2025-03-08 07:20:12,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-08 07:20:13,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:20:13,175 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:20:13,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:20:13,176 INFO L85 PathProgramCache]: Analyzing trace with hash 773681241, now seen corresponding path program 1 times [2025-03-08 07:20:13,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:20:13,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317704632] [2025-03-08 07:20:13,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:20:13,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:20:13,186 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-08 07:20:13,201 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-08 07:20:13,203 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:20:13,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:20:13,457 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:20:13,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:20:13,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317704632] [2025-03-08 07:20:13,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317704632] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 07:20:13,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239283305] [2025-03-08 07:20:13,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:20:13,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:20:13,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:20:13,460 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 07:20:13,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 07:20:13,534 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-08 07:20:13,580 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-08 07:20:13,580 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:20:13,580 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:20:13,584 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-08 07:20:13,587 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 07:20:13,991 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:20:13,991 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 07:20:14,714 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:20:14,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239283305] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 07:20:14,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 07:20:14,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2025-03-08 07:20:14,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370613572] [2025-03-08 07:20:14,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 07:20:14,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-08 07:20:14,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:20:14,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-08 07:20:14,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2025-03-08 07:20:14,716 INFO L87 Difference]: Start difference. First operand 19852 states and 25802 transitions. Second operand has 25 states, 25 states have (on average 10.16) internal successors, (254), 24 states have internal predecessors, (254), 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 07:20:17,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:20:17,339 INFO L93 Difference]: Finished difference Result 97382 states and 125264 transitions. [2025-03-08 07:20:17,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-03-08 07:20:17,339 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.16) internal successors, (254), 24 states have internal predecessors, (254), 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 90 [2025-03-08 07:20:17,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:20:17,416 INFO L225 Difference]: With dead ends: 97382 [2025-03-08 07:20:17,416 INFO L226 Difference]: Without dead ends: 79294 [2025-03-08 07:20:17,434 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=551, Invalid=2205, Unknown=0, NotChecked=0, Total=2756 [2025-03-08 07:20:17,434 INFO L435 NwaCegarLoop]: 1549 mSDtfsCounter, 18637 mSDsluCounter, 7095 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18637 SdHoareTripleChecker+Valid, 8644 SdHoareTripleChecker+Invalid, 1376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 07:20:17,435 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18637 Valid, 8644 Invalid, 1376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 07:20:17,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79294 states. [2025-03-08 07:20:19,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79294 to 78290. [2025-03-08 07:20:19,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78290 states, 78288 states have (on average 1.2550965665236051) internal successors, (98259), 78289 states have internal predecessors, (98259), 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 07:20:19,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78290 states to 78290 states and 98259 transitions. [2025-03-08 07:20:19,936 INFO L78 Accepts]: Start accepts. Automaton has 78290 states and 98259 transitions. Word has length 90 [2025-03-08 07:20:19,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:20:19,936 INFO L471 AbstractCegarLoop]: Abstraction has 78290 states and 98259 transitions. [2025-03-08 07:20:19,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.16) internal successors, (254), 24 states have internal predecessors, (254), 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 07:20:19,936 INFO L276 IsEmpty]: Start isEmpty. Operand 78290 states and 98259 transitions. [2025-03-08 07:20:19,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-08 07:20:19,938 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:20:19,938 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2025-03-08 07:20:19,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-08 07:20:20,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-03-08 07:20:20,142 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:20:20,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:20:20,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1009779006, now seen corresponding path program 1 times [2025-03-08 07:20:20,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:20:20,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615016092] [2025-03-08 07:20:20,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:20:20,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:20:20,150 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-08 07:20:20,187 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-08 07:20:20,187 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:20:20,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:20:20,787 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:20:20,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:20:20,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615016092] [2025-03-08 07:20:20,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615016092] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 07:20:20,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55663463] [2025-03-08 07:20:20,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:20:20,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:20:20,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:20:20,790 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 07:20:20,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 07:20:20,848 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-08 07:20:20,884 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-08 07:20:20,884 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:20:20,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:20:20,885 INFO L256 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-08 07:20:20,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 07:20:21,541 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:20:21,541 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 07:20:22,279 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:20:22,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55663463] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 07:20:22,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 07:20:22,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 30 [2025-03-08 07:20:22,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100513893] [2025-03-08 07:20:22,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 07:20:22,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-03-08 07:20:22,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:20:22,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-03-08 07:20:22,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=751, Unknown=0, NotChecked=0, Total=870 [2025-03-08 07:20:22,281 INFO L87 Difference]: Start difference. First operand 78290 states and 98259 transitions. Second operand has 30 states, 30 states have (on average 7.1) internal successors, (213), 30 states have internal predecessors, (213), 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 07:20:26,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:20:26,063 INFO L93 Difference]: Finished difference Result 134614 states and 168130 transitions. [2025-03-08 07:20:26,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-08 07:20:26,064 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 7.1) internal successors, (213), 30 states have internal predecessors, (213), 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 92 [2025-03-08 07:20:26,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:20:26,195 INFO L225 Difference]: With dead ends: 134614 [2025-03-08 07:20:26,195 INFO L226 Difference]: Without dead ends: 110028 [2025-03-08 07:20:26,226 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=453, Invalid=1803, Unknown=0, NotChecked=0, Total=2256 [2025-03-08 07:20:26,226 INFO L435 NwaCegarLoop]: 1526 mSDtfsCounter, 9779 mSDsluCounter, 19916 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9779 SdHoareTripleChecker+Valid, 21442 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 07:20:26,226 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9779 Valid, 21442 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 07:20:26,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110028 states. [2025-03-08 07:20:28,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110028 to 72766. [2025-03-08 07:20:28,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72766 states, 72764 states have (on average 1.2534907371777253) internal successors, (91209), 72765 states have internal predecessors, (91209), 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 07:20:28,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72766 states to 72766 states and 91209 transitions. [2025-03-08 07:20:28,453 INFO L78 Accepts]: Start accepts. Automaton has 72766 states and 91209 transitions. Word has length 92 [2025-03-08 07:20:28,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:20:28,454 INFO L471 AbstractCegarLoop]: Abstraction has 72766 states and 91209 transitions. [2025-03-08 07:20:28,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 7.1) internal successors, (213), 30 states have internal predecessors, (213), 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 07:20:28,454 INFO L276 IsEmpty]: Start isEmpty. Operand 72766 states and 91209 transitions. [2025-03-08 07:20:28,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-08 07:20:28,455 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:20:28,455 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2025-03-08 07:20:28,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-08 07:20:28,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-03-08 07:20:28,656 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:20:28,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:20:28,656 INFO L85 PathProgramCache]: Analyzing trace with hash -201120643, now seen corresponding path program 1 times [2025-03-08 07:20:28,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:20:28,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007808455] [2025-03-08 07:20:28,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:20:28,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:20:28,662 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-08 07:20:28,680 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-08 07:20:28,680 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:20:28,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:20:29,229 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:20:29,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:20:29,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007808455] [2025-03-08 07:20:29,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007808455] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 07:20:29,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167192462] [2025-03-08 07:20:29,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:20:29,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:20:29,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:20:29,232 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 07:20:29,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-08 07:20:29,299 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-08 07:20:29,341 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-08 07:20:29,341 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:20:29,341 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:20:29,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-03-08 07:20:29,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 07:20:32,891 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:20:32,891 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 07:20:37,383 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:20:37,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167192462] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 07:20:37,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 07:20:37,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 32, 26] total 64 [2025-03-08 07:20:37,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886049205] [2025-03-08 07:20:37,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 07:20:37,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2025-03-08 07:20:37,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:20:37,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2025-03-08 07:20:37,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=478, Invalid=3554, Unknown=0, NotChecked=0, Total=4032 [2025-03-08 07:20:37,385 INFO L87 Difference]: Start difference. First operand 72766 states and 91209 transitions. Second operand has 64 states, 64 states have (on average 3.96875) internal successors, (254), 64 states have internal predecessors, (254), 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 07:21:07,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:21:07,751 INFO L93 Difference]: Finished difference Result 234339 states and 293380 transitions. [2025-03-08 07:21:07,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2025-03-08 07:21:07,751 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 3.96875) internal successors, (254), 64 states have internal predecessors, (254), 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 92 [2025-03-08 07:21:07,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:21:08,000 INFO L225 Difference]: With dead ends: 234339 [2025-03-08 07:21:08,001 INFO L226 Difference]: Without dead ends: 209777 [2025-03-08 07:21:08,043 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22033 ImplicationChecksByTransitivity, 23.4s TimeCoverageRelationStatistics Valid=10554, Invalid=43038, Unknown=0, NotChecked=0, Total=53592 [2025-03-08 07:21:08,045 INFO L435 NwaCegarLoop]: 1499 mSDtfsCounter, 28996 mSDsluCounter, 24726 mSDsCounter, 0 mSdLazyCounter, 6055 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28996 SdHoareTripleChecker+Valid, 26225 SdHoareTripleChecker+Invalid, 6231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 6055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2025-03-08 07:21:08,045 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28996 Valid, 26225 Invalid, 6231 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [176 Valid, 6055 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2025-03-08 07:21:08,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209777 states.