./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-16.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-16.i -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 8e52341f27f00c0c2ceedafaab379711ebb86ba8e7b8a717254138078fb8d030 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 15:19:09,110 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 15:19:09,162 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 15:19:09,172 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 15:19:09,173 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 15:19:09,191 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 15:19:09,191 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 15:19:09,192 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 15:19:09,193 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 15:19:09,193 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 15:19:09,193 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 15:19:09,194 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 15:19:09,194 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 15:19:09,194 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 15:19:09,194 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 15:19:09,194 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 15:19:09,195 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 15:19:09,195 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 15:19:09,195 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 15:19:09,195 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 15:19:09,195 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 15:19:09,195 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 15:19:09,195 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 15:19:09,195 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 15:19:09,195 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 15:19:09,195 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 15:19:09,195 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 15:19:09,195 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 15:19:09,195 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 15:19:09,196 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 15:19:09,196 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 15:19:09,196 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 15:19:09,196 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 15:19:09,196 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 15:19:09,196 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 15:19:09,196 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 15:19:09,196 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 15:19:09,196 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 15:19:09,196 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 15:19:09,197 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 15:19:09,197 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 15:19:09,197 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 15:19:09,197 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 15:19:09,197 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 -> 8e52341f27f00c0c2ceedafaab379711ebb86ba8e7b8a717254138078fb8d030 [2025-03-08 15:19:09,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 15:19:09,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 15:19:09,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 15:19:09,421 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 15:19:09,422 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 15:19:09,423 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-16.i [2025-03-08 15:19:10,556 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb8b04297/72808e171462424eba266ab77335a98d/FLAG838ac3218 [2025-03-08 15:19:10,841 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 15:19:10,842 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-16.i [2025-03-08 15:19:10,855 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb8b04297/72808e171462424eba266ab77335a98d/FLAG838ac3218 [2025-03-08 15:19:10,872 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb8b04297/72808e171462424eba266ab77335a98d [2025-03-08 15:19:10,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 15:19:10,876 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 15:19:10,877 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 15:19:10,877 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 15:19:10,880 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 15:19:10,881 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 03:19:10" (1/1) ... [2025-03-08 15:19:10,882 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a046f11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:19:10, skipping insertion in model container [2025-03-08 15:19:10,883 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 03:19:10" (1/1) ... [2025-03-08 15:19:10,908 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 15:19:11,014 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/hardness-nfm22/hardness_operatoramount_amount250_file-16.i[916,929] [2025-03-08 15:19:11,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 15:19:11,118 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 15:19:11,125 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/hardness-nfm22/hardness_operatoramount_amount250_file-16.i[916,929] [2025-03-08 15:19:11,175 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 15:19:11,196 INFO L204 MainTranslator]: Completed translation [2025-03-08 15:19:11,196 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:19:11 WrapperNode [2025-03-08 15:19:11,197 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 15:19:11,197 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 15:19:11,197 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 15:19:11,197 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 15:19:11,202 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:19:11" (1/1) ... [2025-03-08 15:19:11,221 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:19:11" (1/1) ... [2025-03-08 15:19:11,270 INFO L138 Inliner]: procedures = 26, calls = 62, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 425 [2025-03-08 15:19:11,271 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 15:19:11,271 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 15:19:11,272 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 15:19:11,272 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 15:19:11,278 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:19:11" (1/1) ... [2025-03-08 15:19:11,278 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:19:11" (1/1) ... [2025-03-08 15:19:11,290 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:19:11" (1/1) ... [2025-03-08 15:19:11,326 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-08 15:19:11,326 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:19:11" (1/1) ... [2025-03-08 15:19:11,326 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:19:11" (1/1) ... [2025-03-08 15:19:11,346 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:19:11" (1/1) ... [2025-03-08 15:19:11,351 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:19:11" (1/1) ... [2025-03-08 15:19:11,358 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:19:11" (1/1) ... [2025-03-08 15:19:11,360 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:19:11" (1/1) ... [2025-03-08 15:19:11,365 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 15:19:11,366 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 15:19:11,366 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 15:19:11,366 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 15:19:11,367 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:19:11" (1/1) ... [2025-03-08 15:19:11,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 15:19:11,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:19:11,391 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 15:19:11,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 15:19:11,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 15:19:11,408 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 15:19:11,408 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 15:19:11,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 15:19:11,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 15:19:11,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 15:19:11,507 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 15:19:11,508 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 15:19:12,084 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L355: havoc property_#t~bitwise35#1;havoc property_#t~short36#1;havoc property_#t~bitwise37#1;havoc property_#t~short38#1;havoc property_#t~bitwise39#1;havoc property_#t~short40#1; [2025-03-08 15:19:12,133 INFO L? ?]: Removed 38 outVars from TransFormulas that were not future-live. [2025-03-08 15:19:12,133 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 15:19:12,151 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 15:19:12,152 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 15:19:12,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 03:19:12 BoogieIcfgContainer [2025-03-08 15:19:12,152 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 15:19:12,154 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 15:19:12,154 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 15:19:12,156 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 15:19:12,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 03:19:10" (1/3) ... [2025-03-08 15:19:12,157 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@208bb5ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 03:19:12, skipping insertion in model container [2025-03-08 15:19:12,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:19:11" (2/3) ... [2025-03-08 15:19:12,157 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@208bb5ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 03:19:12, skipping insertion in model container [2025-03-08 15:19:12,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 03:19:12" (3/3) ... [2025-03-08 15:19:12,158 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-16.i [2025-03-08 15:19:12,168 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 15:19:12,171 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-16.i that has 2 procedures, 168 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 15:19:12,217 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 15:19:12,227 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;@41030365, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 15:19:12,229 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 15:19:12,233 INFO L276 IsEmpty]: Start isEmpty. Operand has 168 states, 116 states have (on average 1.4913793103448276) internal successors, (173), 117 states have internal predecessors, (173), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2025-03-08 15:19:12,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2025-03-08 15:19:12,244 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:19:12,245 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:19:12,245 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:19:12,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:19:12,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1701040520, now seen corresponding path program 1 times [2025-03-08 15:19:12,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:19:12,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784740063] [2025-03-08 15:19:12,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:19:12,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:19:12,362 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 321 statements into 1 equivalence classes. [2025-03-08 15:19:12,392 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 321 of 321 statements. [2025-03-08 15:19:12,393 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:19:12,393 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:19:12,690 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2025-03-08 15:19:12,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:19:12,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784740063] [2025-03-08 15:19:12,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784740063] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:19:12,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283457125] [2025-03-08 15:19:12,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:19:12,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:19:12,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:19:12,695 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:19:12,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 15:19:12,810 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 321 statements into 1 equivalence classes. [2025-03-08 15:19:12,925 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 321 of 321 statements. [2025-03-08 15:19:12,925 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:19:12,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:19:12,929 INFO L256 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 15:19:12,938 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:19:12,996 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2025-03-08 15:19:12,997 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 15:19:12,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283457125] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:19:12,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 15:19:12,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 15:19:12,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544428662] [2025-03-08 15:19:12,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:19:13,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 15:19:13,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:19:13,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 15:19:13,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 15:19:13,023 INFO L87 Difference]: Start difference. First operand has 168 states, 116 states have (on average 1.4913793103448276) internal successors, (173), 117 states have internal predecessors, (173), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 2 states have call successors, (49) [2025-03-08 15:19:13,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:19:13,071 INFO L93 Difference]: Finished difference Result 330 states and 586 transitions. [2025-03-08 15:19:13,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 15:19:13,073 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 2 states have call successors, (49) Word has length 321 [2025-03-08 15:19:13,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:19:13,081 INFO L225 Difference]: With dead ends: 330 [2025-03-08 15:19:13,082 INFO L226 Difference]: Without dead ends: 165 [2025-03-08 15:19:13,086 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 15:19:13,090 INFO L435 NwaCegarLoop]: 259 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 15:19:13,090 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 259 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 15:19:13,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2025-03-08 15:19:13,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2025-03-08 15:19:13,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 114 states have (on average 1.4649122807017543) internal successors, (167), 114 states have internal predecessors, (167), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2025-03-08 15:19:13,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 265 transitions. [2025-03-08 15:19:13,127 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 265 transitions. Word has length 321 [2025-03-08 15:19:13,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:19:13,128 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 265 transitions. [2025-03-08 15:19:13,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 2 states have call successors, (49) [2025-03-08 15:19:13,128 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 265 transitions. [2025-03-08 15:19:13,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2025-03-08 15:19:13,134 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:19:13,135 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:19:13,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-08 15:19:13,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-08 15:19:13,339 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:19:13,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:19:13,340 INFO L85 PathProgramCache]: Analyzing trace with hash -238458265, now seen corresponding path program 1 times [2025-03-08 15:19:13,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:19:13,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890422851] [2025-03-08 15:19:13,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:19:13,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:19:13,366 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 321 statements into 1 equivalence classes. [2025-03-08 15:19:13,434 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 321 of 321 statements. [2025-03-08 15:19:13,434 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:19:13,434 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:19:13,635 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2025-03-08 15:19:13,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:19:13,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890422851] [2025-03-08 15:19:13,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890422851] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:19:13,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:19:13,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 15:19:13,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836286732] [2025-03-08 15:19:13,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:19:13,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 15:19:13,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:19:13,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 15:19:13,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:19:13,641 INFO L87 Difference]: Start difference. First operand 165 states and 265 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-03-08 15:19:13,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:19:13,746 INFO L93 Difference]: Finished difference Result 476 states and 766 transitions. [2025-03-08 15:19:13,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 15:19:13,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 321 [2025-03-08 15:19:13,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:19:13,751 INFO L225 Difference]: With dead ends: 476 [2025-03-08 15:19:13,753 INFO L226 Difference]: Without dead ends: 314 [2025-03-08 15:19:13,754 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:19:13,755 INFO L435 NwaCegarLoop]: 446 mSDtfsCounter, 222 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 15:19:13,755 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 690 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 15:19:13,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2025-03-08 15:19:13,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 189. [2025-03-08 15:19:13,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 138 states have (on average 1.5) internal successors, (207), 138 states have internal predecessors, (207), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2025-03-08 15:19:13,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 305 transitions. [2025-03-08 15:19:13,788 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 305 transitions. Word has length 321 [2025-03-08 15:19:13,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:19:13,790 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 305 transitions. [2025-03-08 15:19:13,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-03-08 15:19:13,790 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 305 transitions. [2025-03-08 15:19:13,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2025-03-08 15:19:13,795 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:19:13,796 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:19:13,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 15:19:13,796 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:19:13,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:19:13,797 INFO L85 PathProgramCache]: Analyzing trace with hash 112341672, now seen corresponding path program 1 times [2025-03-08 15:19:13,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:19:13,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333699992] [2025-03-08 15:19:13,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:19:13,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:19:13,830 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 321 statements into 1 equivalence classes. [2025-03-08 15:19:13,903 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 321 of 321 statements. [2025-03-08 15:19:13,904 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:19:13,904 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:19:14,427 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2025-03-08 15:19:14,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:19:14,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333699992] [2025-03-08 15:19:14,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333699992] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:19:14,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:19:14,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 15:19:14,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457488269] [2025-03-08 15:19:14,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:19:14,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 15:19:14,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:19:14,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 15:19:14,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 15:19:14,429 INFO L87 Difference]: Start difference. First operand 189 states and 305 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-03-08 15:19:14,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:19:14,665 INFO L93 Difference]: Finished difference Result 661 states and 1074 transitions. [2025-03-08 15:19:14,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 15:19:14,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 321 [2025-03-08 15:19:14,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:19:14,671 INFO L225 Difference]: With dead ends: 661 [2025-03-08 15:19:14,671 INFO L226 Difference]: Without dead ends: 475 [2025-03-08 15:19:14,672 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 15:19:14,673 INFO L435 NwaCegarLoop]: 364 mSDtfsCounter, 289 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 15:19:14,674 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 860 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 15:19:14,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2025-03-08 15:19:14,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 381. [2025-03-08 15:19:14,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 280 states have (on average 1.5071428571428571) internal successors, (422), 280 states have internal predecessors, (422), 98 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2025-03-08 15:19:14,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 618 transitions. [2025-03-08 15:19:14,722 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 618 transitions. Word has length 321 [2025-03-08 15:19:14,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:19:14,722 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 618 transitions. [2025-03-08 15:19:14,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-03-08 15:19:14,722 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 618 transitions. [2025-03-08 15:19:14,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2025-03-08 15:19:14,726 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:19:14,726 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:19:14,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 15:19:14,726 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:19:14,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:19:14,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1163686661, now seen corresponding path program 1 times [2025-03-08 15:19:14,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:19:14,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133057153] [2025-03-08 15:19:14,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:19:14,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:19:14,752 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 322 statements into 1 equivalence classes. [2025-03-08 15:19:14,790 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 322 of 322 statements. [2025-03-08 15:19:14,791 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:19:14,791 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:19:15,174 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2025-03-08 15:19:15,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:19:15,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133057153] [2025-03-08 15:19:15,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133057153] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:19:15,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:19:15,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 15:19:15,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62331740] [2025-03-08 15:19:15,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:19:15,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 15:19:15,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:19:15,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 15:19:15,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:19:15,178 INFO L87 Difference]: Start difference. First operand 381 states and 618 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-03-08 15:19:15,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:19:15,256 INFO L93 Difference]: Finished difference Result 1137 states and 1848 transitions. [2025-03-08 15:19:15,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 15:19:15,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 322 [2025-03-08 15:19:15,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:19:15,264 INFO L225 Difference]: With dead ends: 1137 [2025-03-08 15:19:15,266 INFO L226 Difference]: Without dead ends: 759 [2025-03-08 15:19:15,267 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:19:15,268 INFO L435 NwaCegarLoop]: 255 mSDtfsCounter, 158 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 15:19:15,268 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 505 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 15:19:15,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2025-03-08 15:19:15,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 757. [2025-03-08 15:19:15,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 556 states have (on average 1.5035971223021583) internal successors, (836), 556 states have internal predecessors, (836), 196 states have call successors, (196), 4 states have call predecessors, (196), 4 states have return successors, (196), 196 states have call predecessors, (196), 196 states have call successors, (196) [2025-03-08 15:19:15,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 1228 transitions. [2025-03-08 15:19:15,347 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 1228 transitions. Word has length 322 [2025-03-08 15:19:15,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:19:15,350 INFO L471 AbstractCegarLoop]: Abstraction has 757 states and 1228 transitions. [2025-03-08 15:19:15,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-03-08 15:19:15,350 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 1228 transitions. [2025-03-08 15:19:15,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2025-03-08 15:19:15,353 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:19:15,354 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:19:15,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 15:19:15,354 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:19:15,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:19:15,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1375037574, now seen corresponding path program 1 times [2025-03-08 15:19:15,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:19:15,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614124192] [2025-03-08 15:19:15,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:19:15,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:19:15,381 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 322 statements into 1 equivalence classes. [2025-03-08 15:19:15,471 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 322 of 322 statements. [2025-03-08 15:19:15,472 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:19:15,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:19:16,253 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2025-03-08 15:19:16,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:19:16,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614124192] [2025-03-08 15:19:16,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614124192] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:19:16,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:19:16,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 15:19:16,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575677592] [2025-03-08 15:19:16,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:19:16,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 15:19:16,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:19:16,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 15:19:16,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 15:19:16,258 INFO L87 Difference]: Start difference. First operand 757 states and 1228 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-03-08 15:19:16,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:19:16,894 INFO L93 Difference]: Finished difference Result 1938 states and 3145 transitions. [2025-03-08 15:19:16,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 15:19:16,895 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 322 [2025-03-08 15:19:16,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:19:16,901 INFO L225 Difference]: With dead ends: 1938 [2025-03-08 15:19:16,901 INFO L226 Difference]: Without dead ends: 1184 [2025-03-08 15:19:16,903 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-08 15:19:16,903 INFO L435 NwaCegarLoop]: 242 mSDtfsCounter, 321 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 15:19:16,903 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 835 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 15:19:16,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2025-03-08 15:19:17,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1154. [2025-03-08 15:19:17,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 903 states have (on average 1.539313399778516) internal successors, (1390), 903 states have internal predecessors, (1390), 245 states have call successors, (245), 5 states have call predecessors, (245), 5 states have return successors, (245), 245 states have call predecessors, (245), 245 states have call successors, (245) [2025-03-08 15:19:17,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1880 transitions. [2025-03-08 15:19:17,009 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1880 transitions. Word has length 322 [2025-03-08 15:19:17,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:19:17,009 INFO L471 AbstractCegarLoop]: Abstraction has 1154 states and 1880 transitions. [2025-03-08 15:19:17,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-03-08 15:19:17,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1880 transitions. [2025-03-08 15:19:17,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2025-03-08 15:19:17,012 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:19:17,012 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:19:17,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 15:19:17,012 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:19:17,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:19:17,013 INFO L85 PathProgramCache]: Analyzing trace with hash -969629467, now seen corresponding path program 1 times [2025-03-08 15:19:17,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:19:17,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274656155] [2025-03-08 15:19:17,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:19:17,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:19:17,033 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 322 statements into 1 equivalence classes. [2025-03-08 15:19:17,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 322 of 322 statements. [2025-03-08 15:19:17,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:19:17,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:19:17,524 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2025-03-08 15:19:17,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:19:17,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274656155] [2025-03-08 15:19:17,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274656155] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:19:17,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:19:17,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 15:19:17,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965546688] [2025-03-08 15:19:17,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:19:17,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 15:19:17,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:19:17,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 15:19:17,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 15:19:17,526 INFO L87 Difference]: Start difference. First operand 1154 states and 1880 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-03-08 15:19:17,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:19:17,833 INFO L93 Difference]: Finished difference Result 3638 states and 5933 transitions. [2025-03-08 15:19:17,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 15:19:17,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 322 [2025-03-08 15:19:17,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:19:17,847 INFO L225 Difference]: With dead ends: 3638 [2025-03-08 15:19:17,847 INFO L226 Difference]: Without dead ends: 2580 [2025-03-08 15:19:17,850 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 15:19:17,851 INFO L435 NwaCegarLoop]: 355 mSDtfsCounter, 290 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 15:19:17,851 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 849 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 15:19:17,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2580 states. [2025-03-08 15:19:17,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2580 to 2204. [2025-03-08 15:19:17,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2204 states, 1753 states have (on average 1.5390758699372504) internal successors, (2698), 1753 states have internal predecessors, (2698), 441 states have call successors, (441), 9 states have call predecessors, (441), 9 states have return successors, (441), 441 states have call predecessors, (441), 441 states have call successors, (441) [2025-03-08 15:19:18,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2204 states to 2204 states and 3580 transitions. [2025-03-08 15:19:18,008 INFO L78 Accepts]: Start accepts. Automaton has 2204 states and 3580 transitions. Word has length 322 [2025-03-08 15:19:18,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:19:18,008 INFO L471 AbstractCegarLoop]: Abstraction has 2204 states and 3580 transitions. [2025-03-08 15:19:18,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-03-08 15:19:18,009 INFO L276 IsEmpty]: Start isEmpty. Operand 2204 states and 3580 transitions. [2025-03-08 15:19:18,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2025-03-08 15:19:18,011 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:19:18,012 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:19:18,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 15:19:18,012 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:19:18,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:19:18,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1402844647, now seen corresponding path program 1 times [2025-03-08 15:19:18,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:19:18,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143624876] [2025-03-08 15:19:18,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:19:18,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:19:18,033 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 323 statements into 1 equivalence classes. [2025-03-08 15:19:18,500 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 323 of 323 statements. [2025-03-08 15:19:18,500 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:19:18,501 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:19:19,115 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 18 proven. 126 refuted. 0 times theorem prover too weak. 4560 trivial. 0 not checked. [2025-03-08 15:19:19,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:19:19,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143624876] [2025-03-08 15:19:19,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143624876] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:19:19,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124519000] [2025-03-08 15:19:19,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:19:19,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:19:19,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:19:19,118 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:19:19,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 15:19:19,202 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 323 statements into 1 equivalence classes. [2025-03-08 15:19:19,305 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 323 of 323 statements. [2025-03-08 15:19:19,305 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:19:19,305 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:19:19,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-03-08 15:19:19,317 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:19:22,034 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 3401 proven. 486 refuted. 0 times theorem prover too weak. 817 trivial. 0 not checked. [2025-03-08 15:19:22,035 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:19:26,263 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 324 proven. 495 refuted. 0 times theorem prover too weak. 3885 trivial. 0 not checked. [2025-03-08 15:19:26,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124519000] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:19:26,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:19:26,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 25, 26] total 56 [2025-03-08 15:19:26,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237466718] [2025-03-08 15:19:26,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:19:26,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2025-03-08 15:19:26,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:19:26,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2025-03-08 15:19:26,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=735, Invalid=2345, Unknown=0, NotChecked=0, Total=3080 [2025-03-08 15:19:26,266 INFO L87 Difference]: Start difference. First operand 2204 states and 3580 transitions. Second operand has 56 states, 55 states have (on average 4.163636363636364) internal successors, (229), 54 states have internal predecessors, (229), 18 states have call successors, (147), 9 states have call predecessors, (147), 21 states have return successors, (147), 18 states have call predecessors, (147), 18 states have call successors, (147) [2025-03-08 15:19:52,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:19:52,697 INFO L93 Difference]: Finished difference Result 39097 states and 60661 transitions. [2025-03-08 15:19:52,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 353 states. [2025-03-08 15:19:52,698 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 4.163636363636364) internal successors, (229), 54 states have internal predecessors, (229), 18 states have call successors, (147), 9 states have call predecessors, (147), 21 states have return successors, (147), 18 states have call predecessors, (147), 18 states have call successors, (147) Word has length 323 [2025-03-08 15:19:52,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:19:52,823 INFO L225 Difference]: With dead ends: 39097 [2025-03-08 15:19:52,823 INFO L226 Difference]: Without dead ends: 37071 [2025-03-08 15:19:52,908 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1063 GetRequests, 663 SyntacticMatches, 0 SemanticMatches, 400 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71161 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=23449, Invalid=137753, Unknown=0, NotChecked=0, Total=161202 [2025-03-08 15:19:52,909 INFO L435 NwaCegarLoop]: 558 mSDtfsCounter, 12033 mSDsluCounter, 6580 mSDsCounter, 0 mSdLazyCounter, 10235 mSolverCounterSat, 3313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12034 SdHoareTripleChecker+Valid, 7138 SdHoareTripleChecker+Invalid, 13548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3313 IncrementalHoareTripleChecker+Valid, 10235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2025-03-08 15:19:52,909 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12034 Valid, 7138 Invalid, 13548 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3313 Valid, 10235 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2025-03-08 15:19:52,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37071 states. [2025-03-08 15:19:54,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37071 to 22901. [2025-03-08 15:19:54,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22901 states, 19913 states have (on average 1.5479837292221161) internal successors, (30825), 19973 states have internal predecessors, (30825), 2601 states have call successors, (2601), 386 states have call predecessors, (2601), 386 states have return successors, (2601), 2541 states have call predecessors, (2601), 2601 states have call successors, (2601) [2025-03-08 15:19:54,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22901 states to 22901 states and 36027 transitions. [2025-03-08 15:19:54,353 INFO L78 Accepts]: Start accepts. Automaton has 22901 states and 36027 transitions. Word has length 323 [2025-03-08 15:19:54,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:19:54,355 INFO L471 AbstractCegarLoop]: Abstraction has 22901 states and 36027 transitions. [2025-03-08 15:19:54,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 4.163636363636364) internal successors, (229), 54 states have internal predecessors, (229), 18 states have call successors, (147), 9 states have call predecessors, (147), 21 states have return successors, (147), 18 states have call predecessors, (147), 18 states have call successors, (147) [2025-03-08 15:19:54,359 INFO L276 IsEmpty]: Start isEmpty. Operand 22901 states and 36027 transitions. [2025-03-08 15:19:54,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2025-03-08 15:19:54,372 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:19:54,372 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:19:54,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-08 15:19:54,573 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,SelfDestructingSolverStorable6 [2025-03-08 15:19:54,573 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:19:54,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:19:54,574 INFO L85 PathProgramCache]: Analyzing trace with hash 123414181, now seen corresponding path program 1 times [2025-03-08 15:19:54,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:19:54,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681497491] [2025-03-08 15:19:54,574 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:19:54,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:19:54,591 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 323 statements into 1 equivalence classes. [2025-03-08 15:19:54,917 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 323 of 323 statements. [2025-03-08 15:19:54,918 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:19:54,918 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:19:57,359 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 129 proven. 285 refuted. 0 times theorem prover too weak. 4290 trivial. 0 not checked. [2025-03-08 15:19:57,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:19:57,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681497491] [2025-03-08 15:19:57,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681497491] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:19:57,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104429384] [2025-03-08 15:19:57,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:19:57,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:19:57,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:19:57,362 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:19:57,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 15:19:57,449 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 323 statements into 1 equivalence classes. [2025-03-08 15:19:57,551 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 323 of 323 statements. [2025-03-08 15:19:57,551 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:19:57,551 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:19:57,555 INFO L256 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-03-08 15:19:57,562 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:20:00,161 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 3222 proven. 417 refuted. 0 times theorem prover too weak. 1065 trivial. 0 not checked. [2025-03-08 15:20:00,162 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:20:02,684 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 393 proven. 426 refuted. 0 times theorem prover too weak. 3885 trivial. 0 not checked. [2025-03-08 15:20:02,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104429384] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:20:02,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:20:02,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 27, 26] total 63 [2025-03-08 15:20:02,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327187270] [2025-03-08 15:20:02,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:20:02,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2025-03-08 15:20:02,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:20:02,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2025-03-08 15:20:02,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=763, Invalid=3143, Unknown=0, NotChecked=0, Total=3906 [2025-03-08 15:20:02,688 INFO L87 Difference]: Start difference. First operand 22901 states and 36027 transitions. Second operand has 63 states, 59 states have (on average 3.9152542372881354) internal successors, (231), 56 states have internal predecessors, (231), 22 states have call successors, (147), 9 states have call predecessors, (147), 19 states have return successors, (147), 21 states have call predecessors, (147), 22 states have call successors, (147) [2025-03-08 15:20:27,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:20:27,906 INFO L93 Difference]: Finished difference Result 74629 states and 113539 transitions. [2025-03-08 15:20:27,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2025-03-08 15:20:27,907 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 59 states have (on average 3.9152542372881354) internal successors, (231), 56 states have internal predecessors, (231), 22 states have call successors, (147), 9 states have call predecessors, (147), 19 states have return successors, (147), 21 states have call predecessors, (147), 22 states have call successors, (147) Word has length 323 [2025-03-08 15:20:27,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:20:28,094 INFO L225 Difference]: With dead ends: 74629 [2025-03-08 15:20:28,094 INFO L226 Difference]: Without dead ends: 51891 [2025-03-08 15:20:28,142 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 911 GetRequests, 638 SyntacticMatches, 0 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28004 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=13074, Invalid=62276, Unknown=0, NotChecked=0, Total=75350 [2025-03-08 15:20:28,143 INFO L435 NwaCegarLoop]: 402 mSDtfsCounter, 5753 mSDsluCounter, 7905 mSDsCounter, 0 mSdLazyCounter, 10496 mSolverCounterSat, 2316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5778 SdHoareTripleChecker+Valid, 8307 SdHoareTripleChecker+Invalid, 12812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2316 IncrementalHoareTripleChecker+Valid, 10496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2025-03-08 15:20:28,143 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5778 Valid, 8307 Invalid, 12812 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2316 Valid, 10496 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2025-03-08 15:20:28,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51891 states. [2025-03-08 15:20:32,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51891 to 36973. [2025-03-08 15:20:32,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36973 states, 31469 states have (on average 1.5230544345228638) internal successors, (47929), 31601 states have internal predecessors, (47929), 4709 states have call successors, (4709), 794 states have call predecessors, (4709), 794 states have return successors, (4709), 4577 states have call predecessors, (4709), 4709 states have call successors, (4709) [2025-03-08 15:20:32,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36973 states to 36973 states and 57347 transitions. [2025-03-08 15:20:32,462 INFO L78 Accepts]: Start accepts. Automaton has 36973 states and 57347 transitions. Word has length 323 [2025-03-08 15:20:32,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:20:32,463 INFO L471 AbstractCegarLoop]: Abstraction has 36973 states and 57347 transitions. [2025-03-08 15:20:32,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 59 states have (on average 3.9152542372881354) internal successors, (231), 56 states have internal predecessors, (231), 22 states have call successors, (147), 9 states have call predecessors, (147), 19 states have return successors, (147), 21 states have call predecessors, (147), 22 states have call successors, (147) [2025-03-08 15:20:32,463 INFO L276 IsEmpty]: Start isEmpty. Operand 36973 states and 57347 transitions. [2025-03-08 15:20:32,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2025-03-08 15:20:32,473 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:20:32,474 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:20:32,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-08 15:20:32,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:20:32,674 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:20:32,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:20:32,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1751219225, now seen corresponding path program 1 times [2025-03-08 15:20:32,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:20:32,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205055324] [2025-03-08 15:20:32,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:20:32,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:20:32,692 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 325 statements into 1 equivalence classes. [2025-03-08 15:20:33,249 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 325 of 325 statements. [2025-03-08 15:20:33,249 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:20:33,249 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:20:33,925 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 105 proven. 177 refuted. 0 times theorem prover too weak. 4422 trivial. 0 not checked. [2025-03-08 15:20:33,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:20:33,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205055324] [2025-03-08 15:20:33,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205055324] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:20:33,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610911562] [2025-03-08 15:20:33,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:20:33,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:20:33,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:20:33,928 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:20:33,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 15:20:34,013 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 325 statements into 1 equivalence classes. [2025-03-08 15:20:34,119 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 325 of 325 statements. [2025-03-08 15:20:34,119 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:20:34,119 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:20:34,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 798 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-08 15:20:34,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:20:35,136 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 2837 proven. 222 refuted. 0 times theorem prover too weak. 1645 trivial. 0 not checked. [2025-03-08 15:20:35,137 INFO L312 TraceCheckSpWp]: Computing backward predicates...