./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label56.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 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/eca-rers2012/Problem13_label56.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 21992ce5086310b9eccd33893912bc55e4a94502535426b80db5bcf53a1c73cc --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 10:45:53,513 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 10:45:53,568 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 10:45:53,572 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 10:45:53,572 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 10:45:53,595 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 10:45:53,597 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 10:45:53,597 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 10:45:53,597 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 10:45:53,598 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 10:45:53,598 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 10:45:53,598 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 10:45:53,598 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 10:45:53,599 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 10:45:53,599 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 10:45:53,599 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 10:45:53,599 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 10:45:53,599 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 10:45:53,599 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 10:45:53,599 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 10:45:53,599 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 10:45:53,600 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 10:45:53,600 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 10:45:53,600 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 10:45:53,600 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 10:45:53,600 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 10:45:53,600 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 10:45:53,600 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 10:45:53,600 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 10:45:53,600 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 10:45:53,600 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 10:45:53,600 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 10:45:53,600 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 10:45:53,600 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 10:45:53,601 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 10:45:53,601 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 10:45:53,601 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 10:45:53,601 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 10:45:53,601 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 10:45:53,601 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 10:45:53,601 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 10:45:53,602 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 10:45:53,602 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 10:45:53,602 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 -> 21992ce5086310b9eccd33893912bc55e4a94502535426b80db5bcf53a1c73cc [2025-03-03 10:45:53,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 10:45:53,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 10:45:53,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 10:45:53,830 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 10:45:53,830 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 10:45:53,831 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label56.c [2025-03-03 10:45:54,980 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eca17383e/3560405d24d04e359b22252abe03cba7/FLAG7006d4439 [2025-03-03 10:45:55,364 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 10:45:55,365 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label56.c [2025-03-03 10:45:55,395 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eca17383e/3560405d24d04e359b22252abe03cba7/FLAG7006d4439 [2025-03-03 10:45:55,408 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eca17383e/3560405d24d04e359b22252abe03cba7 [2025-03-03 10:45:55,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 10:45:55,412 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 10:45:55,413 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 10:45:55,413 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 10:45:55,416 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 10:45:55,416 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 10:45:55" (1/1) ... [2025-03-03 10:45:55,417 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57ac1310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 10:45:55, skipping insertion in model container [2025-03-03 10:45:55,417 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 10:45:55" (1/1) ... [2025-03-03 10:45:55,490 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 10:45:55,689 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/eca-rers2012/Problem13_label56.c[7559,7572] [2025-03-03 10:45:56,147 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 10:45:56,161 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 10:45:56,181 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/eca-rers2012/Problem13_label56.c[7559,7572] [2025-03-03 10:45:56,492 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 10:45:56,509 INFO L204 MainTranslator]: Completed translation [2025-03-03 10:45:56,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 10:45:56 WrapperNode [2025-03-03 10:45:56,511 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 10:45:56,512 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 10:45:56,512 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 10:45:56,512 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 10:45:56,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 10:45:56" (1/1) ... [2025-03-03 10:45:56,567 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 10:45:56" (1/1) ... [2025-03-03 10:45:56,884 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5584 [2025-03-03 10:45:56,885 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 10:45:56,885 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 10:45:56,885 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 10:45:56,885 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 10:45:56,893 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 10:45:56" (1/1) ... [2025-03-03 10:45:56,894 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 10:45:56" (1/1) ... [2025-03-03 10:45:56,951 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 10:45:56" (1/1) ... [2025-03-03 10:45:57,201 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]. [2025-03-03 10:45:57,201 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 10:45:56" (1/1) ... [2025-03-03 10:45:57,202 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 10:45:56" (1/1) ... [2025-03-03 10:45:57,325 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 10:45:56" (1/1) ... [2025-03-03 10:45:57,350 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 10:45:56" (1/1) ... [2025-03-03 10:45:57,375 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 10:45:56" (1/1) ... [2025-03-03 10:45:57,397 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 10:45:56" (1/1) ... [2025-03-03 10:45:57,458 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 10:45:57,459 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 10:45:57,459 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 10:45:57,459 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 10:45:57,460 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 10:45:56" (1/1) ... [2025-03-03 10:45:57,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 10:45:57,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 10:45:57,529 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) [2025-03-03 10:45:57,532 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 [2025-03-03 10:45:57,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 10:45:57,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 10:45:57,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 10:45:57,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 10:45:57,603 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 10:45:57,604 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 10:46:01,532 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1894: havoc calculate_output_#t~ret9#1; [2025-03-03 10:46:01,532 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L3629: havoc calculate_output2_#t~ret10#1; [2025-03-03 10:46:01,532 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L5351: havoc calculate_output3_#t~ret11#1; [2025-03-03 10:46:01,700 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2025-03-03 10:46:01,700 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 10:46:01,722 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 10:46:01,726 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 10:46:01,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 10:46:01 BoogieIcfgContainer [2025-03-03 10:46:01,726 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 10:46:01,727 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 10:46:01,727 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 10:46:01,734 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 10:46:01,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 10:45:55" (1/3) ... [2025-03-03 10:46:01,735 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e1e93b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 10:46:01, skipping insertion in model container [2025-03-03 10:46:01,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 10:45:56" (2/3) ... [2025-03-03 10:46:01,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e1e93b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 10:46:01, skipping insertion in model container [2025-03-03 10:46:01,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 10:46:01" (3/3) ... [2025-03-03 10:46:01,737 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem13_label56.c [2025-03-03 10:46:01,750 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 10:46:01,751 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem13_label56.c that has 1 procedures, 1098 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 10:46:01,824 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 10:46:01,834 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;@8945261, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 10:46:01,835 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 10:46:01,840 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8266423357664234) internal successors, (2002), 1097 states have internal predecessors, (2002), 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) [2025-03-03 10:46:01,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-03-03 10:46:01,845 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 10:46:01,845 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] [2025-03-03 10:46:01,845 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 10:46:01,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 10:46:01,849 INFO L85 PathProgramCache]: Analyzing trace with hash 2061327428, now seen corresponding path program 1 times [2025-03-03 10:46:01,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 10:46:01,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923372230] [2025-03-03 10:46:01,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:46:01,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 10:46:01,908 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-03 10:46:01,947 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-03 10:46:01,947 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:46:01,947 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:46:02,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 10:46:02,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 10:46:02,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923372230] [2025-03-03 10:46:02,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923372230] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 10:46:02,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 10:46:02,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 10:46:02,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755073076] [2025-03-03 10:46:02,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 10:46:02,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 10:46:02,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 10:46:02,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 10:46:02,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 10:46:02,342 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8266423357664234) internal successors, (2002), 1097 states have internal predecessors, (2002), 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 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 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) [2025-03-03 10:46:07,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 10:46:07,291 INFO L93 Difference]: Finished difference Result 3829 states and 7202 transitions. [2025-03-03 10:46:07,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 10:46:07,292 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 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 53 [2025-03-03 10:46:07,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 10:46:07,313 INFO L225 Difference]: With dead ends: 3829 [2025-03-03 10:46:07,313 INFO L226 Difference]: Without dead ends: 2664 [2025-03-03 10:46:07,318 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 10:46:07,320 INFO L435 NwaCegarLoop]: 753 mSDtfsCounter, 2687 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 4246 mSolverCounterSat, 1607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2687 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 5853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1607 IncrementalHoareTripleChecker+Valid, 4246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2025-03-03 10:46:07,320 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2687 Valid, 1051 Invalid, 5853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1607 Valid, 4246 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2025-03-03 10:46:07,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2025-03-03 10:46:07,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2663. [2025-03-03 10:46:07,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 2662 states have (on average 1.460931630353118) internal successors, (3889), 2662 states have internal predecessors, (3889), 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) [2025-03-03 10:46:07,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3889 transitions. [2025-03-03 10:46:07,426 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3889 transitions. Word has length 53 [2025-03-03 10:46:07,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 10:46:07,426 INFO L471 AbstractCegarLoop]: Abstraction has 2663 states and 3889 transitions. [2025-03-03 10:46:07,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 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) [2025-03-03 10:46:07,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3889 transitions. [2025-03-03 10:46:07,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2025-03-03 10:46:07,430 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 10:46:07,431 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 10:46:07,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 10:46:07,431 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 10:46:07,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 10:46:07,432 INFO L85 PathProgramCache]: Analyzing trace with hash 793313297, now seen corresponding path program 1 times [2025-03-03 10:46:07,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 10:46:07,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975803373] [2025-03-03 10:46:07,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:46:07,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 10:46:07,452 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 178 statements into 1 equivalence classes. [2025-03-03 10:46:07,479 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 178 of 178 statements. [2025-03-03 10:46:07,479 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:46:07,479 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:46:08,160 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 10:46:08,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 10:46:08,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975803373] [2025-03-03 10:46:08,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975803373] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 10:46:08,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466643651] [2025-03-03 10:46:08,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:46:08,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 10:46:08,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 10:46:08,164 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) [2025-03-03 10:46:08,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 10:46:08,213 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 178 statements into 1 equivalence classes. [2025-03-03 10:46:08,245 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 178 of 178 statements. [2025-03-03 10:46:08,245 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:46:08,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:46:08,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 10:46:08,253 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 10:46:08,439 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2025-03-03 10:46:08,439 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 10:46:08,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466643651] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 10:46:08,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 10:46:08,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-03-03 10:46:08,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421039100] [2025-03-03 10:46:08,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 10:46:08,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 10:46:08,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 10:46:08,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 10:46:08,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-03 10:46:08,441 INFO L87 Difference]: Start difference. First operand 2663 states and 3889 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 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) [2025-03-03 10:46:11,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 10:46:11,340 INFO L93 Difference]: Finished difference Result 6142 states and 9712 transitions. [2025-03-03 10:46:11,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 10:46:11,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 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 178 [2025-03-03 10:46:11,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 10:46:11,353 INFO L225 Difference]: With dead ends: 6142 [2025-03-03 10:46:11,353 INFO L226 Difference]: Without dead ends: 4268 [2025-03-03 10:46:11,356 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-03 10:46:11,356 INFO L435 NwaCegarLoop]: 1038 mSDtfsCounter, 743 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 778 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 778 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-03-03 10:46:11,357 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [743 Valid, 1187 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [778 Valid, 2508 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-03-03 10:46:11,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4268 states. [2025-03-03 10:46:11,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4268 to 4254. [2025-03-03 10:46:11,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4254 states, 4253 states have (on average 1.3515165765342112) internal successors, (5748), 4253 states have internal predecessors, (5748), 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) [2025-03-03 10:46:11,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4254 states to 4254 states and 5748 transitions. [2025-03-03 10:46:11,414 INFO L78 Accepts]: Start accepts. Automaton has 4254 states and 5748 transitions. Word has length 178 [2025-03-03 10:46:11,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 10:46:11,414 INFO L471 AbstractCegarLoop]: Abstraction has 4254 states and 5748 transitions. [2025-03-03 10:46:11,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 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) [2025-03-03 10:46:11,415 INFO L276 IsEmpty]: Start isEmpty. Operand 4254 states and 5748 transitions. [2025-03-03 10:46:11,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2025-03-03 10:46:11,418 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 10:46:11,418 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 10:46:11,426 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-03 10:46:11,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 10:46:11,619 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 10:46:11,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 10:46:11,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1535456561, now seen corresponding path program 1 times [2025-03-03 10:46:11,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 10:46:11,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571237024] [2025-03-03 10:46:11,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:46:11,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 10:46:11,641 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 220 statements into 1 equivalence classes. [2025-03-03 10:46:11,659 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 220 of 220 statements. [2025-03-03 10:46:11,659 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:46:11,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:46:11,783 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-03-03 10:46:11,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 10:46:11,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571237024] [2025-03-03 10:46:11,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571237024] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 10:46:11,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 10:46:11,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 10:46:11,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818274701] [2025-03-03 10:46:11,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 10:46:11,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 10:46:11,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 10:46:11,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 10:46:11,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 10:46:11,785 INFO L87 Difference]: Start difference. First operand 4254 states and 5748 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 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) [2025-03-03 10:46:14,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 10:46:14,808 INFO L93 Difference]: Finished difference Result 10899 states and 15275 transitions. [2025-03-03 10:46:14,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 10:46:14,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 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 220 [2025-03-03 10:46:14,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 10:46:14,826 INFO L225 Difference]: With dead ends: 10899 [2025-03-03 10:46:14,826 INFO L226 Difference]: Without dead ends: 7434 [2025-03-03 10:46:14,828 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 [2025-03-03 10:46:14,831 INFO L435 NwaCegarLoop]: 825 mSDtfsCounter, 906 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 2568 mSolverCounterSat, 754 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 3322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 754 IncrementalHoareTripleChecker+Valid, 2568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-03-03 10:46:14,831 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [906 Valid, 957 Invalid, 3322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [754 Valid, 2568 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-03-03 10:46:14,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7434 states. [2025-03-03 10:46:14,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7434 to 7426. [2025-03-03 10:46:14,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7426 states, 7425 states have (on average 1.288888888888889) internal successors, (9570), 7425 states have internal predecessors, (9570), 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) [2025-03-03 10:46:14,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7426 states to 7426 states and 9570 transitions. [2025-03-03 10:46:14,918 INFO L78 Accepts]: Start accepts. Automaton has 7426 states and 9570 transitions. Word has length 220 [2025-03-03 10:46:14,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 10:46:14,919 INFO L471 AbstractCegarLoop]: Abstraction has 7426 states and 9570 transitions. [2025-03-03 10:46:14,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 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) [2025-03-03 10:46:14,919 INFO L276 IsEmpty]: Start isEmpty. Operand 7426 states and 9570 transitions. [2025-03-03 10:46:14,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2025-03-03 10:46:14,921 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 10:46:14,922 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 10:46:14,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-03 10:46:14,922 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 10:46:14,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 10:46:14,922 INFO L85 PathProgramCache]: Analyzing trace with hash -547283560, now seen corresponding path program 1 times [2025-03-03 10:46:14,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 10:46:14,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051430618] [2025-03-03 10:46:14,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:46:14,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 10:46:14,937 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 234 statements into 1 equivalence classes. [2025-03-03 10:46:14,948 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 234 of 234 statements. [2025-03-03 10:46:14,949 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:46:14,949 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:46:15,065 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2025-03-03 10:46:15,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 10:46:15,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051430618] [2025-03-03 10:46:15,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051430618] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 10:46:15,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 10:46:15,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 10:46:15,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967369266] [2025-03-03 10:46:15,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 10:46:15,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 10:46:15,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 10:46:15,068 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 10:46:15,068 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 10:46:15,069 INFO L87 Difference]: Start difference. First operand 7426 states and 9570 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 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) [2025-03-03 10:46:17,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 10:46:17,750 INFO L93 Difference]: Finished difference Result 19621 states and 25905 transitions. [2025-03-03 10:46:17,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 10:46:17,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 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 234 [2025-03-03 10:46:17,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 10:46:17,782 INFO L225 Difference]: With dead ends: 19621 [2025-03-03 10:46:17,782 INFO L226 Difference]: Without dead ends: 12984 [2025-03-03 10:46:17,792 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 [2025-03-03 10:46:17,793 INFO L435 NwaCegarLoop]: 476 mSDtfsCounter, 909 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 2890 mSolverCounterSat, 539 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 3429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 539 IncrementalHoareTripleChecker+Valid, 2890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-03-03 10:46:17,793 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 640 Invalid, 3429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [539 Valid, 2890 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-03-03 10:46:17,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12984 states. [2025-03-03 10:46:17,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12984 to 12975. [2025-03-03 10:46:17,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12975 states, 12974 states have (on average 1.2720826267920455) internal successors, (16504), 12974 states have internal predecessors, (16504), 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) [2025-03-03 10:46:17,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12975 states to 12975 states and 16504 transitions. [2025-03-03 10:46:17,945 INFO L78 Accepts]: Start accepts. Automaton has 12975 states and 16504 transitions. Word has length 234 [2025-03-03 10:46:17,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 10:46:17,946 INFO L471 AbstractCegarLoop]: Abstraction has 12975 states and 16504 transitions. [2025-03-03 10:46:17,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 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) [2025-03-03 10:46:17,946 INFO L276 IsEmpty]: Start isEmpty. Operand 12975 states and 16504 transitions. [2025-03-03 10:46:17,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2025-03-03 10:46:17,951 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 10:46:17,951 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 10:46:17,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-03 10:46:17,952 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 10:46:17,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 10:46:17,952 INFO L85 PathProgramCache]: Analyzing trace with hash -984759173, now seen corresponding path program 1 times [2025-03-03 10:46:17,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 10:46:17,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236580910] [2025-03-03 10:46:17,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:46:17,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 10:46:17,968 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 250 statements into 1 equivalence classes. [2025-03-03 10:46:17,982 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 250 of 250 statements. [2025-03-03 10:46:17,982 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:46:17,982 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:46:18,156 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2025-03-03 10:46:18,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 10:46:18,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236580910] [2025-03-03 10:46:18,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236580910] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 10:46:18,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 10:46:18,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 10:46:18,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921040503] [2025-03-03 10:46:18,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 10:46:18,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 10:46:18,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 10:46:18,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 10:46:18,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 10:46:18,159 INFO L87 Difference]: Start difference. First operand 12975 states and 16504 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 states have internal predecessors, (180), 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) [2025-03-03 10:46:20,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 10:46:20,585 INFO L93 Difference]: Finished difference Result 36180 states and 46598 transitions. [2025-03-03 10:46:20,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 10:46:20,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 states have internal predecessors, (180), 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 250 [2025-03-03 10:46:20,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 10:46:20,623 INFO L225 Difference]: With dead ends: 36180 [2025-03-03 10:46:20,624 INFO L226 Difference]: Without dead ends: 23994 [2025-03-03 10:46:20,638 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 [2025-03-03 10:46:20,639 INFO L435 NwaCegarLoop]: 837 mSDtfsCounter, 857 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 869 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 3177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 869 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-03-03 10:46:20,639 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 984 Invalid, 3177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [869 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-03-03 10:46:20,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23994 states. [2025-03-03 10:46:20,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23994 to 23203. [2025-03-03 10:46:20,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23203 states, 23202 states have (on average 1.2067494181536074) internal successors, (27999), 23202 states have internal predecessors, (27999), 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) [2025-03-03 10:46:20,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23203 states to 23203 states and 27999 transitions. [2025-03-03 10:46:20,864 INFO L78 Accepts]: Start accepts. Automaton has 23203 states and 27999 transitions. Word has length 250 [2025-03-03 10:46:20,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 10:46:20,865 INFO L471 AbstractCegarLoop]: Abstraction has 23203 states and 27999 transitions. [2025-03-03 10:46:20,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 states have internal predecessors, (180), 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) [2025-03-03 10:46:20,865 INFO L276 IsEmpty]: Start isEmpty. Operand 23203 states and 27999 transitions. [2025-03-03 10:46:20,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2025-03-03 10:46:20,868 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 10:46:20,868 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 10:46:20,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-03 10:46:20,868 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 10:46:20,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 10:46:20,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1865508283, now seen corresponding path program 1 times [2025-03-03 10:46:20,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 10:46:20,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705172346] [2025-03-03 10:46:20,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:46:20,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 10:46:20,887 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 252 statements into 1 equivalence classes. [2025-03-03 10:46:20,898 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 252 of 252 statements. [2025-03-03 10:46:20,898 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:46:20,898 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:46:21,000 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 10:46:21,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 10:46:21,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705172346] [2025-03-03 10:46:21,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705172346] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 10:46:21,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 10:46:21,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 10:46:21,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382626087] [2025-03-03 10:46:21,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 10:46:21,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 10:46:21,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 10:46:21,003 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 10:46:21,003 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 10:46:21,003 INFO L87 Difference]: Start difference. First operand 23203 states and 27999 transitions. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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) [2025-03-03 10:46:23,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 10:46:23,617 INFO L93 Difference]: Finished difference Result 57432 states and 70773 transitions. [2025-03-03 10:46:23,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 10:46:23,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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 252 [2025-03-03 10:46:23,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 10:46:23,671 INFO L225 Difference]: With dead ends: 57432 [2025-03-03 10:46:23,671 INFO L226 Difference]: Without dead ends: 35018 [2025-03-03 10:46:23,691 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 [2025-03-03 10:46:23,691 INFO L435 NwaCegarLoop]: 806 mSDtfsCounter, 858 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2381 mSolverCounterSat, 914 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 3295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 914 IncrementalHoareTripleChecker+Valid, 2381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-03-03 10:46:23,692 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 923 Invalid, 3295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [914 Valid, 2381 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-03-03 10:46:23,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35018 states. [2025-03-03 10:46:23,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35018 to 33434. [2025-03-03 10:46:23,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33434 states, 33433 states have (on average 1.1907097777644842) internal successors, (39809), 33433 states have internal predecessors, (39809), 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) [2025-03-03 10:46:23,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33434 states to 33434 states and 39809 transitions. [2025-03-03 10:46:23,994 INFO L78 Accepts]: Start accepts. Automaton has 33434 states and 39809 transitions. Word has length 252 [2025-03-03 10:46:23,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 10:46:23,994 INFO L471 AbstractCegarLoop]: Abstraction has 33434 states and 39809 transitions. [2025-03-03 10:46:23,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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) [2025-03-03 10:46:23,995 INFO L276 IsEmpty]: Start isEmpty. Operand 33434 states and 39809 transitions. [2025-03-03 10:46:23,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2025-03-03 10:46:24,000 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 10:46:24,000 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 10:46:24,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-03 10:46:24,000 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 10:46:24,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 10:46:24,001 INFO L85 PathProgramCache]: Analyzing trace with hash -713261097, now seen corresponding path program 1 times [2025-03-03 10:46:24,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 10:46:24,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457142861] [2025-03-03 10:46:24,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:46:24,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 10:46:24,020 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 341 statements into 1 equivalence classes. [2025-03-03 10:46:24,037 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 341 of 341 statements. [2025-03-03 10:46:24,038 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:46:24,038 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:46:24,325 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 377 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-03-03 10:46:24,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 10:46:24,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457142861] [2025-03-03 10:46:24,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457142861] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 10:46:24,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 10:46:24,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 10:46:24,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106076267] [2025-03-03 10:46:24,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 10:46:24,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 10:46:24,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 10:46:24,327 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 10:46:24,327 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 10:46:24,328 INFO L87 Difference]: Start difference. First operand 33434 states and 39809 transitions. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 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) [2025-03-03 10:46:29,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 10:46:29,260 INFO L93 Difference]: Finished difference Result 117462 states and 141051 transitions. [2025-03-03 10:46:29,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 10:46:29,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 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 341 [2025-03-03 10:46:29,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 10:46:29,386 INFO L225 Difference]: With dead ends: 117462 [2025-03-03 10:46:29,387 INFO L226 Difference]: Without dead ends: 84817 [2025-03-03 10:46:29,425 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 10:46:29,426 INFO L435 NwaCegarLoop]: 497 mSDtfsCounter, 1737 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 6066 mSolverCounterSat, 1187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1737 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 7253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1187 IncrementalHoareTripleChecker+Valid, 6066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2025-03-03 10:46:29,427 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1737 Valid, 699 Invalid, 7253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1187 Valid, 6066 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2025-03-03 10:46:29,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84817 states. [2025-03-03 10:46:30,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84817 to 83900. [2025-03-03 10:46:30,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83900 states, 83899 states have (on average 1.1736254305772418) internal successors, (98466), 83899 states have internal predecessors, (98466), 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) [2025-03-03 10:46:30,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83900 states to 83900 states and 98466 transitions. [2025-03-03 10:46:30,268 INFO L78 Accepts]: Start accepts. Automaton has 83900 states and 98466 transitions. Word has length 341 [2025-03-03 10:46:30,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 10:46:30,268 INFO L471 AbstractCegarLoop]: Abstraction has 83900 states and 98466 transitions. [2025-03-03 10:46:30,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 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) [2025-03-03 10:46:30,268 INFO L276 IsEmpty]: Start isEmpty. Operand 83900 states and 98466 transitions. [2025-03-03 10:46:30,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2025-03-03 10:46:30,272 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 10:46:30,272 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-03 10:46:30,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-03 10:46:30,273 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 10:46:30,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 10:46:30,273 INFO L85 PathProgramCache]: Analyzing trace with hash 501095911, now seen corresponding path program 1 times [2025-03-03 10:46:30,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 10:46:30,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228397926] [2025-03-03 10:46:30,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:46:30,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 10:46:30,296 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 350 statements into 1 equivalence classes. [2025-03-03 10:46:30,308 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 350 of 350 statements. [2025-03-03 10:46:30,308 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:46:30,309 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:46:30,480 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 365 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-03-03 10:46:30,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 10:46:30,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228397926] [2025-03-03 10:46:30,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228397926] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 10:46:30,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 10:46:30,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 10:46:30,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948387964] [2025-03-03 10:46:30,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 10:46:30,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 10:46:30,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 10:46:30,481 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 10:46:30,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 10:46:30,482 INFO L87 Difference]: Start difference. First operand 83900 states and 98466 transitions. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 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) [2025-03-03 10:46:32,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 10:46:32,963 INFO L93 Difference]: Finished difference Result 167046 states and 196195 transitions. [2025-03-03 10:46:32,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 10:46:32,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 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 350 [2025-03-03 10:46:32,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 10:46:33,071 INFO L225 Difference]: With dead ends: 167046 [2025-03-03 10:46:33,072 INFO L226 Difference]: Without dead ends: 83935 [2025-03-03 10:46:33,127 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 [2025-03-03 10:46:33,128 INFO L435 NwaCegarLoop]: 1851 mSDtfsCounter, 753 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 2597 mSolverCounterSat, 310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 1993 SdHoareTripleChecker+Invalid, 2907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 2597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-03 10:46:33,128 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 1993 Invalid, 2907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [310 Valid, 2597 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-03 10:46:33,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83935 states. [2025-03-03 10:46:33,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83935 to 83901. [2025-03-03 10:46:33,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83901 states, 83900 states have (on average 1.1574731823599522) internal successors, (97112), 83900 states have internal predecessors, (97112), 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) [2025-03-03 10:46:33,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83901 states to 83901 states and 97112 transitions. [2025-03-03 10:46:33,975 INFO L78 Accepts]: Start accepts. Automaton has 83901 states and 97112 transitions. Word has length 350 [2025-03-03 10:46:33,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 10:46:33,976 INFO L471 AbstractCegarLoop]: Abstraction has 83901 states and 97112 transitions. [2025-03-03 10:46:33,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 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) [2025-03-03 10:46:33,976 INFO L276 IsEmpty]: Start isEmpty. Operand 83901 states and 97112 transitions. [2025-03-03 10:46:33,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2025-03-03 10:46:33,980 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 10:46:33,980 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-03 10:46:33,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-03 10:46:33,980 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 10:46:33,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 10:46:33,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1630014604, now seen corresponding path program 1 times [2025-03-03 10:46:33,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 10:46:33,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058147293] [2025-03-03 10:46:33,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:46:33,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 10:46:34,001 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 370 statements into 1 equivalence classes. [2025-03-03 10:46:34,011 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 370 of 370 statements. [2025-03-03 10:46:34,011 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:46:34,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:46:34,079 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 380 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-03-03 10:46:34,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 10:46:34,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058147293] [2025-03-03 10:46:34,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058147293] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 10:46:34,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 10:46:34,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 10:46:34,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164406440] [2025-03-03 10:46:34,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 10:46:34,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 10:46:34,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 10:46:34,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 10:46:34,082 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 10:46:34,082 INFO L87 Difference]: Start difference. First operand 83901 states and 97112 transitions. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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) [2025-03-03 10:46:36,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 10:46:36,799 INFO L93 Difference]: Finished difference Result 171710 states and 198022 transitions. [2025-03-03 10:46:36,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 10:46:36,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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 370 [2025-03-03 10:46:36,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 10:46:36,900 INFO L225 Difference]: With dead ends: 171710 [2025-03-03 10:46:36,900 INFO L226 Difference]: Without dead ends: 85445 [2025-03-03 10:46:36,952 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 [2025-03-03 10:46:36,953 INFO L435 NwaCegarLoop]: 1512 mSDtfsCounter, 1037 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2348 mSolverCounterSat, 595 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 1648 SdHoareTripleChecker+Invalid, 2943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 595 IncrementalHoareTripleChecker+Valid, 2348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-03 10:46:36,953 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1037 Valid, 1648 Invalid, 2943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [595 Valid, 2348 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-03 10:46:37,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85445 states. [2025-03-03 10:46:37,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85445 to 80709. [2025-03-03 10:46:37,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80709 states, 80708 states have (on average 1.1047727610645786) internal successors, (89164), 80708 states have internal predecessors, (89164), 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) [2025-03-03 10:46:38,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80709 states to 80709 states and 89164 transitions. [2025-03-03 10:46:38,004 INFO L78 Accepts]: Start accepts. Automaton has 80709 states and 89164 transitions. Word has length 370 [2025-03-03 10:46:38,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 10:46:38,005 INFO L471 AbstractCegarLoop]: Abstraction has 80709 states and 89164 transitions. [2025-03-03 10:46:38,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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) [2025-03-03 10:46:38,005 INFO L276 IsEmpty]: Start isEmpty. Operand 80709 states and 89164 transitions. [2025-03-03 10:46:38,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2025-03-03 10:46:38,009 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 10:46:38,009 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 10:46:38,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-03 10:46:38,009 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 10:46:38,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 10:46:38,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1481616538, now seen corresponding path program 1 times [2025-03-03 10:46:38,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 10:46:38,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144817956] [2025-03-03 10:46:38,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:46:38,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 10:46:38,029 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 379 statements into 1 equivalence classes. [2025-03-03 10:46:38,039 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 379 of 379 statements. [2025-03-03 10:46:38,040 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:46:38,040 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:46:38,765 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 270 proven. 113 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-03-03 10:46:38,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 10:46:38,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144817956] [2025-03-03 10:46:38,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144817956] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 10:46:38,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344771963] [2025-03-03 10:46:38,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:46:38,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 10:46:38,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 10:46:38,768 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) [2025-03-03 10:46:38,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 10:46:38,816 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 379 statements into 1 equivalence classes. [2025-03-03 10:46:38,869 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 379 of 379 statements. [2025-03-03 10:46:38,870 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:46:38,870 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:46:38,871 INFO L256 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 10:46:38,876 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 10:46:39,003 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 270 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2025-03-03 10:46:39,004 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 10:46:39,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344771963] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 10:46:39,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 10:46:39,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2025-03-03 10:46:39,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832729242] [2025-03-03 10:46:39,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 10:46:39,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 10:46:39,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 10:46:39,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 10:46:39,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-03-03 10:46:39,006 INFO L87 Difference]: Start difference. First operand 80709 states and 89164 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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) [2025-03-03 10:46:41,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 10:46:41,479 INFO L93 Difference]: Finished difference Result 160627 states and 177533 transitions. [2025-03-03 10:46:41,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 10:46:41,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 379 [2025-03-03 10:46:41,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 10:46:41,573 INFO L225 Difference]: With dead ends: 160627 [2025-03-03 10:46:41,573 INFO L226 Difference]: Without dead ends: 80707 [2025-03-03 10:46:41,619 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-03-03 10:46:41,619 INFO L435 NwaCegarLoop]: 1344 mSDtfsCounter, 1113 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2451 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1113 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 2895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 2451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-03 10:46:41,619 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1113 Valid, 1423 Invalid, 2895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 2451 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-03 10:46:41,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80707 states. [2025-03-03 10:46:42,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80707 to 80706. [2025-03-03 10:46:42,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80706 states, 80705 states have (on average 1.0796109286909112) internal successors, (87130), 80705 states have internal predecessors, (87130), 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) [2025-03-03 10:46:42,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80706 states to 80706 states and 87130 transitions. [2025-03-03 10:46:42,791 INFO L78 Accepts]: Start accepts. Automaton has 80706 states and 87130 transitions. Word has length 379 [2025-03-03 10:46:42,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 10:46:42,792 INFO L471 AbstractCegarLoop]: Abstraction has 80706 states and 87130 transitions. [2025-03-03 10:46:42,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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) [2025-03-03 10:46:42,792 INFO L276 IsEmpty]: Start isEmpty. Operand 80706 states and 87130 transitions. [2025-03-03 10:46:42,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2025-03-03 10:46:42,797 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 10:46:42,797 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 10:46:42,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-03 10:46:42,997 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,SelfDestructingSolverStorable9 [2025-03-03 10:46:42,998 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 10:46:42,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 10:46:42,999 INFO L85 PathProgramCache]: Analyzing trace with hash 678230293, now seen corresponding path program 1 times [2025-03-03 10:46:42,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 10:46:42,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941581771] [2025-03-03 10:46:42,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:46:42,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 10:46:43,019 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 409 statements into 1 equivalence classes. [2025-03-03 10:46:43,034 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 409 of 409 statements. [2025-03-03 10:46:43,035 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:46:43,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:46:43,239 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 532 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2025-03-03 10:46:43,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 10:46:43,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941581771] [2025-03-03 10:46:43,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941581771] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 10:46:43,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 10:46:43,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 10:46:43,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890296023] [2025-03-03 10:46:43,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 10:46:43,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 10:46:43,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 10:46:43,240 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 10:46:43,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 10:46:43,240 INFO L87 Difference]: Start difference. First operand 80706 states and 87130 transitions. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 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) [2025-03-03 10:46:46,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 10:46:46,262 INFO L93 Difference]: Finished difference Result 187388 states and 204118 transitions. [2025-03-03 10:46:46,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 10:46:46,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 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 409 [2025-03-03 10:46:46,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 10:46:46,375 INFO L225 Difference]: With dead ends: 187388 [2025-03-03 10:46:46,375 INFO L226 Difference]: Without dead ends: 107471 [2025-03-03 10:46:46,398 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 [2025-03-03 10:46:46,399 INFO L435 NwaCegarLoop]: 822 mSDtfsCounter, 874 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2418 mSolverCounterSat, 920 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 3338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 920 IncrementalHoareTripleChecker+Valid, 2418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-03 10:46:46,399 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 905 Invalid, 3338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [920 Valid, 2418 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-03 10:46:46,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107471 states. [2025-03-03 10:46:47,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107471 to 105091. [2025-03-03 10:46:47,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105091 states, 105090 states have (on average 1.0853458939956229) internal successors, (114059), 105090 states have internal predecessors, (114059), 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) [2025-03-03 10:46:47,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105091 states to 105091 states and 114059 transitions. [2025-03-03 10:46:47,279 INFO L78 Accepts]: Start accepts. Automaton has 105091 states and 114059 transitions. Word has length 409 [2025-03-03 10:46:47,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 10:46:47,279 INFO L471 AbstractCegarLoop]: Abstraction has 105091 states and 114059 transitions. [2025-03-03 10:46:47,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 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) [2025-03-03 10:46:47,280 INFO L276 IsEmpty]: Start isEmpty. Operand 105091 states and 114059 transitions. [2025-03-03 10:46:47,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2025-03-03 10:46:47,285 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 10:46:47,285 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 10:46:47,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-03 10:46:47,286 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 10:46:47,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 10:46:47,286 INFO L85 PathProgramCache]: Analyzing trace with hash 402211427, now seen corresponding path program 1 times [2025-03-03 10:46:47,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 10:46:47,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526683511] [2025-03-03 10:46:47,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:46:47,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 10:46:47,307 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 447 statements into 1 equivalence classes. [2025-03-03 10:46:47,321 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 447 of 447 statements. [2025-03-03 10:46:47,321 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:46:47,321 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:46:47,613 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 430 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2025-03-03 10:46:47,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 10:46:47,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526683511] [2025-03-03 10:46:47,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526683511] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 10:46:47,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 10:46:47,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 10:46:47,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724974836] [2025-03-03 10:46:47,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 10:46:47,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 10:46:47,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 10:46:47,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 10:46:47,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 10:46:47,614 INFO L87 Difference]: Start difference. First operand 105091 states and 114059 transitions. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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) [2025-03-03 10:46:51,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 10:46:51,088 INFO L93 Difference]: Finished difference Result 236166 states and 257969 transitions. [2025-03-03 10:46:51,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 10:46:51,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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 447 [2025-03-03 10:46:51,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 10:46:51,268 INFO L225 Difference]: With dead ends: 236166 [2025-03-03 10:46:51,268 INFO L226 Difference]: Without dead ends: 129503 [2025-03-03 10:46:51,334 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 [2025-03-03 10:46:51,335 INFO L435 NwaCegarLoop]: 1741 mSDtfsCounter, 785 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 1884 SdHoareTripleChecker+Invalid, 3232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-03-03 10:46:51,335 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 1884 Invalid, 3232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-03-03 10:46:51,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129503 states. [2025-03-03 10:46:52,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129503 to 127913. [2025-03-03 10:46:52,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127913 states, 127912 states have (on average 1.0750750515979737) internal successors, (137515), 127912 states have internal predecessors, (137515), 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) [2025-03-03 10:46:52,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127913 states to 127913 states and 137515 transitions. [2025-03-03 10:46:52,833 INFO L78 Accepts]: Start accepts. Automaton has 127913 states and 137515 transitions. Word has length 447 [2025-03-03 10:46:52,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 10:46:52,834 INFO L471 AbstractCegarLoop]: Abstraction has 127913 states and 137515 transitions. [2025-03-03 10:46:52,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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) [2025-03-03 10:46:52,834 INFO L276 IsEmpty]: Start isEmpty. Operand 127913 states and 137515 transitions. [2025-03-03 10:46:52,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2025-03-03 10:46:52,845 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 10:46:52,845 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 10:46:52,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-03 10:46:52,845 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 10:46:52,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 10:46:52,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1760201121, now seen corresponding path program 1 times [2025-03-03 10:46:52,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 10:46:52,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728027053] [2025-03-03 10:46:52,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:46:52,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 10:46:52,870 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 518 statements into 1 equivalence classes. [2025-03-03 10:46:52,888 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 518 of 518 statements. [2025-03-03 10:46:52,888 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:46:52,888 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:46:53,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1147 backedges. 869 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2025-03-03 10:46:53,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 10:46:53,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728027053] [2025-03-03 10:46:53,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728027053] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 10:46:53,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 10:46:53,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 10:46:53,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914624623] [2025-03-03 10:46:53,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 10:46:53,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 10:46:53,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 10:46:53,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 10:46:53,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 10:46:53,168 INFO L87 Difference]: Start difference. First operand 127913 states and 137515 transitions. Second operand has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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) [2025-03-03 10:46:55,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 10:46:55,779 INFO L93 Difference]: Finished difference Result 256615 states and 275826 transitions. [2025-03-03 10:46:55,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 10:46:55,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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 518 [2025-03-03 10:46:55,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 10:46:55,923 INFO L225 Difference]: With dead ends: 256615 [2025-03-03 10:46:55,923 INFO L226 Difference]: Without dead ends: 129491 [2025-03-03 10:46:55,987 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 [2025-03-03 10:46:55,987 INFO L435 NwaCegarLoop]: 1376 mSDtfsCounter, 936 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2474 mSolverCounterSat, 593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 1459 SdHoareTripleChecker+Invalid, 3067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 593 IncrementalHoareTripleChecker+Valid, 2474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-03 10:46:55,988 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [936 Valid, 1459 Invalid, 3067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [593 Valid, 2474 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-03 10:46:56,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129491 states. [2025-03-03 10:46:57,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129491 to 127904. [2025-03-03 10:46:57,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127904 states, 127903 states have (on average 1.056073743383658) internal successors, (135075), 127903 states have internal predecessors, (135075), 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) [2025-03-03 10:46:57,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127904 states to 127904 states and 135075 transitions. [2025-03-03 10:46:57,414 INFO L78 Accepts]: Start accepts. Automaton has 127904 states and 135075 transitions. Word has length 518 [2025-03-03 10:46:57,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 10:46:57,414 INFO L471 AbstractCegarLoop]: Abstraction has 127904 states and 135075 transitions. [2025-03-03 10:46:57,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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) [2025-03-03 10:46:57,414 INFO L276 IsEmpty]: Start isEmpty. Operand 127904 states and 135075 transitions. [2025-03-03 10:46:57,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2025-03-03 10:46:57,429 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 10:46:57,429 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 10:46:57,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-03 10:46:57,429 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 10:46:57,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 10:46:57,430 INFO L85 PathProgramCache]: Analyzing trace with hash -813392065, now seen corresponding path program 1 times [2025-03-03 10:46:57,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 10:46:57,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137386000] [2025-03-03 10:46:57,430 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:46:57,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 10:46:57,471 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 529 statements into 1 equivalence classes. [2025-03-03 10:46:57,497 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 529 of 529 statements. [2025-03-03 10:46:57,497 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:46:57,497 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:46:57,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 753 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2025-03-03 10:46:57,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 10:46:57,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137386000] [2025-03-03 10:46:57,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137386000] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 10:46:57,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 10:46:57,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 10:46:57,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384915057] [2025-03-03 10:46:57,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 10:46:57,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 10:46:57,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 10:46:57,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 10:46:57,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 10:46:57,728 INFO L87 Difference]: Start difference. First operand 127904 states and 135075 transitions. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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) [2025-03-03 10:47:00,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 10:47:00,454 INFO L93 Difference]: Finished difference Result 240066 states and 254013 transitions. [2025-03-03 10:47:00,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 10:47:00,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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 529 [2025-03-03 10:47:00,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 10:47:00,605 INFO L225 Difference]: With dead ends: 240066 [2025-03-03 10:47:00,605 INFO L226 Difference]: Without dead ends: 128697 [2025-03-03 10:47:00,662 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 [2025-03-03 10:47:00,662 INFO L435 NwaCegarLoop]: 1787 mSDtfsCounter, 722 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 1921 SdHoareTripleChecker+Invalid, 2526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-03 10:47:00,662 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 1921 Invalid, 2526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-03 10:47:00,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128697 states. [2025-03-03 10:47:01,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128697 to 128692. [2025-03-03 10:47:01,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128692 states, 128691 states have (on average 1.056033444452215) internal successors, (135902), 128691 states have internal predecessors, (135902), 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) [2025-03-03 10:47:02,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128692 states to 128692 states and 135902 transitions. [2025-03-03 10:47:02,093 INFO L78 Accepts]: Start accepts. Automaton has 128692 states and 135902 transitions. Word has length 529 [2025-03-03 10:47:02,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 10:47:02,094 INFO L471 AbstractCegarLoop]: Abstraction has 128692 states and 135902 transitions. [2025-03-03 10:47:02,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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) [2025-03-03 10:47:02,094 INFO L276 IsEmpty]: Start isEmpty. Operand 128692 states and 135902 transitions. [2025-03-03 10:47:02,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2025-03-03 10:47:02,108 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 10:47:02,108 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 10:47:02,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-03 10:47:02,108 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 10:47:02,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 10:47:02,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1657131783, now seen corresponding path program 1 times [2025-03-03 10:47:02,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 10:47:02,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990442231] [2025-03-03 10:47:02,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:47:02,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 10:47:02,135 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 559 statements into 1 equivalence classes. [2025-03-03 10:47:02,155 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 559 of 559 statements. [2025-03-03 10:47:02,155 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:47:02,155 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:47:02,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1147 backedges. 254 proven. 0 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2025-03-03 10:47:02,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 10:47:02,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990442231] [2025-03-03 10:47:02,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990442231] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 10:47:02,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 10:47:02,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 10:47:02,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596935310] [2025-03-03 10:47:02,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 10:47:02,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 10:47:02,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 10:47:02,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 10:47:02,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 10:47:02,363 INFO L87 Difference]: Start difference. First operand 128692 states and 135902 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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) [2025-03-03 10:47:06,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 10:47:06,373 INFO L93 Difference]: Finished difference Result 305520 states and 322792 transitions. [2025-03-03 10:47:06,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 10:47:06,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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 559 [2025-03-03 10:47:06,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 10:47:06,564 INFO L225 Difference]: With dead ends: 305520 [2025-03-03 10:47:06,564 INFO L226 Difference]: Without dead ends: 177617 [2025-03-03 10:47:06,615 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 [2025-03-03 10:47:06,615 INFO L435 NwaCegarLoop]: 1755 mSDtfsCounter, 883 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 3291 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 1879 SdHoareTripleChecker+Invalid, 3628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 3291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2025-03-03 10:47:06,616 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 1879 Invalid, 3628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 3291 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2025-03-03 10:47:06,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177617 states. [2025-03-03 10:47:08,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177617 to 175158. [2025-03-03 10:47:08,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175158 states, 175157 states have (on average 1.0544768407771314) internal successors, (184699), 175157 states have internal predecessors, (184699), 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) [2025-03-03 10:47:08,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175158 states to 175158 states and 184699 transitions. [2025-03-03 10:47:08,451 INFO L78 Accepts]: Start accepts. Automaton has 175158 states and 184699 transitions. Word has length 559 [2025-03-03 10:47:08,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 10:47:08,451 INFO L471 AbstractCegarLoop]: Abstraction has 175158 states and 184699 transitions. [2025-03-03 10:47:08,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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) [2025-03-03 10:47:08,451 INFO L276 IsEmpty]: Start isEmpty. Operand 175158 states and 184699 transitions. [2025-03-03 10:47:08,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2025-03-03 10:47:08,469 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 10:47:08,469 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 10:47:08,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-03 10:47:08,469 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 10:47:08,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 10:47:08,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1781395554, now seen corresponding path program 1 times [2025-03-03 10:47:08,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 10:47:08,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897312722] [2025-03-03 10:47:08,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:47:08,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 10:47:08,498 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 607 statements into 1 equivalence classes. [2025-03-03 10:47:08,516 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 607 of 607 statements. [2025-03-03 10:47:08,517 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:47:08,517 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:47:09,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1489 backedges. 732 proven. 0 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2025-03-03 10:47:09,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 10:47:09,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897312722] [2025-03-03 10:47:09,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897312722] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 10:47:09,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 10:47:09,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 10:47:09,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043589335] [2025-03-03 10:47:09,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 10:47:09,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 10:47:09,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 10:47:09,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 10:47:09,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 10:47:09,138 INFO L87 Difference]: Start difference. First operand 175158 states and 184699 transitions. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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) [2025-03-03 10:47:12,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 10:47:12,453 INFO L93 Difference]: Finished difference Result 345600 states and 365070 transitions. [2025-03-03 10:47:12,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 10:47:12,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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 607 [2025-03-03 10:47:12,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 10:47:12,666 INFO L225 Difference]: With dead ends: 345600 [2025-03-03 10:47:12,666 INFO L226 Difference]: Without dead ends: 189338 [2025-03-03 10:47:12,734 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 [2025-03-03 10:47:12,735 INFO L435 NwaCegarLoop]: 1789 mSDtfsCounter, 699 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 2586 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 1960 SdHoareTripleChecker+Invalid, 2742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 2586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-03-03 10:47:12,735 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 1960 Invalid, 2742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 2586 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-03-03 10:47:12,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189338 states. [2025-03-03 10:47:14,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189338 to 189326. [2025-03-03 10:47:14,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189326 states, 189325 states have (on average 1.0524600554601875) internal successors, (199257), 189325 states have internal predecessors, (199257), 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) [2025-03-03 10:47:14,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189326 states to 189326 states and 199257 transitions. [2025-03-03 10:47:14,968 INFO L78 Accepts]: Start accepts. Automaton has 189326 states and 199257 transitions. Word has length 607 [2025-03-03 10:47:14,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 10:47:14,969 INFO L471 AbstractCegarLoop]: Abstraction has 189326 states and 199257 transitions. [2025-03-03 10:47:14,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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) [2025-03-03 10:47:14,969 INFO L276 IsEmpty]: Start isEmpty. Operand 189326 states and 199257 transitions. [2025-03-03 10:47:14,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2025-03-03 10:47:14,988 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 10:47:14,988 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 10:47:14,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-03 10:47:14,988 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 10:47:14,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 10:47:14,989 INFO L85 PathProgramCache]: Analyzing trace with hash 516385987, now seen corresponding path program 1 times [2025-03-03 10:47:14,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 10:47:14,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9965771] [2025-03-03 10:47:14,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 10:47:14,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 10:47:15,036 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 614 statements into 1 equivalence classes. [2025-03-03 10:47:15,058 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 614 of 614 statements. [2025-03-03 10:47:15,058 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 10:47:15,058 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 10:47:15,732 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 523 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-03-03 10:47:15,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 10:47:15,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9965771] [2025-03-03 10:47:15,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9965771] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 10:47:15,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 10:47:15,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 10:47:15,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760929587] [2025-03-03 10:47:15,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 10:47:15,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 10:47:15,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 10:47:15,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 10:47:15,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 10:47:15,735 INFO L87 Difference]: Start difference. First operand 189326 states and 199257 transitions. Second operand has 4 states, 4 states have (on average 141.0) internal successors, (564), 3 states have internal predecessors, (564), 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)