./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-61.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-61.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 0c05b3481ca1dc1c692f840aeed292bcc36fc4d3f2b591c1dabda29806aee6c8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 19:27:14,986 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 19:27:15,048 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 19:27:15,055 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 19:27:15,056 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 19:27:15,085 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 19:27:15,085 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 19:27:15,086 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 19:27:15,087 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 19:27:15,087 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 19:27:15,088 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 19:27:15,088 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 19:27:15,088 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 19:27:15,088 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 19:27:15,089 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 19:27:15,089 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 19:27:15,089 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 19:27:15,089 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 19:27:15,089 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 19:27:15,089 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 19:27:15,089 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 19:27:15,089 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 19:27:15,090 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 19:27:15,090 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 19:27:15,090 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 19:27:15,090 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 19:27:15,090 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 19:27:15,090 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 19:27:15,090 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 19:27:15,090 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 19:27:15,090 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 19:27:15,090 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 19:27:15,090 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 19:27:15,091 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 19:27:15,091 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 19:27:15,091 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 19:27:15,091 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 19:27:15,091 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 19:27:15,091 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 19:27:15,091 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 19:27:15,092 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 19:27:15,092 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 19:27:15,092 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 19:27:15,092 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 -> 0c05b3481ca1dc1c692f840aeed292bcc36fc4d3f2b591c1dabda29806aee6c8 [2025-03-03 19:27:15,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 19:27:15,360 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 19:27:15,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 19:27:15,364 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 19:27:15,364 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 19:27:15,366 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-61.i [2025-03-03 19:27:16,536 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/475daa9bd/a59af410622f45b09a2c2da63b91f5cb/FLAGb9acd80da [2025-03-03 19:27:16,761 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 19:27:16,762 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-61.i [2025-03-03 19:27:16,770 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/475daa9bd/a59af410622f45b09a2c2da63b91f5cb/FLAGb9acd80da [2025-03-03 19:27:17,096 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/475daa9bd/a59af410622f45b09a2c2da63b91f5cb [2025-03-03 19:27:17,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 19:27:17,099 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 19:27:17,100 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 19:27:17,100 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 19:27:17,103 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 19:27:17,104 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 07:27:17" (1/1) ... [2025-03-03 19:27:17,106 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c9801bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:27:17, skipping insertion in model container [2025-03-03 19:27:17,106 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 07:27:17" (1/1) ... [2025-03-03 19:27:17,127 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 19:27:17,240 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_fillercode_fillercodesize_ps-cn-100_file-61.i[916,929] [2025-03-03 19:27:17,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 19:27:17,351 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 19:27:17,362 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_fillercode_fillercodesize_ps-cn-100_file-61.i[916,929] [2025-03-03 19:27:17,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 19:27:17,424 INFO L204 MainTranslator]: Completed translation [2025-03-03 19:27:17,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:27:17 WrapperNode [2025-03-03 19:27:17,426 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 19:27:17,426 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 19:27:17,427 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 19:27:17,427 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 19:27:17,432 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:27:17" (1/1) ... [2025-03-03 19:27:17,444 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:27:17" (1/1) ... [2025-03-03 19:27:17,472 INFO L138 Inliner]: procedures = 26, calls = 82, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 406 [2025-03-03 19:27:17,472 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 19:27:17,476 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 19:27:17,477 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 19:27:17,477 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 19:27:17,484 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:27:17" (1/1) ... [2025-03-03 19:27:17,485 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:27:17" (1/1) ... [2025-03-03 19:27:17,492 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:27:17" (1/1) ... [2025-03-03 19:27:17,515 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-03 19:27:17,515 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:27:17" (1/1) ... [2025-03-03 19:27:17,518 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:27:17" (1/1) ... [2025-03-03 19:27:17,525 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:27:17" (1/1) ... [2025-03-03 19:27:17,527 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:27:17" (1/1) ... [2025-03-03 19:27:17,532 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:27:17" (1/1) ... [2025-03-03 19:27:17,534 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:27:17" (1/1) ... [2025-03-03 19:27:17,540 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 19:27:17,541 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 19:27:17,542 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 19:27:17,542 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 19:27:17,543 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:27:17" (1/1) ... [2025-03-03 19:27:17,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 19:27:17,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 19:27:17,569 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-03 19:27:17,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-03 19:27:17,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 19:27:17,587 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-03 19:27:17,587 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-03 19:27:17,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 19:27:17,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 19:27:17,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 19:27:17,662 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 19:27:17,664 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 19:27:18,116 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L312: havoc property_#t~ite45#1;havoc property_#t~ite44#1;havoc property_#t~bitwise43#1;havoc property_#t~short46#1; [2025-03-03 19:27:18,190 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2025-03-03 19:27:18,192 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 19:27:18,207 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 19:27:18,207 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 19:27:18,208 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 07:27:18 BoogieIcfgContainer [2025-03-03 19:27:18,208 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 19:27:18,209 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 19:27:18,210 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 19:27:18,213 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 19:27:18,213 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 07:27:17" (1/3) ... [2025-03-03 19:27:18,214 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b52d47d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 07:27:18, skipping insertion in model container [2025-03-03 19:27:18,214 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:27:17" (2/3) ... [2025-03-03 19:27:18,214 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b52d47d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 07:27:18, skipping insertion in model container [2025-03-03 19:27:18,214 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 07:27:18" (3/3) ... [2025-03-03 19:27:18,215 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-61.i [2025-03-03 19:27:18,227 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 19:27:18,228 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-61.i that has 2 procedures, 181 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 19:27:18,283 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 19:27:18,293 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;@5848cd2a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 19:27:18,294 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 19:27:18,299 INFO L276 IsEmpty]: Start isEmpty. Operand has 181 states, 109 states have (on average 1.4403669724770642) internal successors, (157), 110 states have internal predecessors, (157), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2025-03-03 19:27:18,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2025-03-03 19:27:18,317 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 19:27:18,318 INFO L218 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 19:27:18,318 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 19:27:18,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 19:27:18,322 INFO L85 PathProgramCache]: Analyzing trace with hash 2019207260, now seen corresponding path program 1 times [2025-03-03 19:27:18,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 19:27:18,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390537241] [2025-03-03 19:27:18,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:27:18,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 19:27:18,421 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 421 statements into 1 equivalence classes. [2025-03-03 19:27:18,451 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 421 of 421 statements. [2025-03-03 19:27:18,452 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:27:18,452 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:27:18,731 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 9248 trivial. 0 not checked. [2025-03-03 19:27:18,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 19:27:18,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390537241] [2025-03-03 19:27:18,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390537241] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 19:27:18,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267951482] [2025-03-03 19:27:18,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:27:18,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 19:27:18,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 19:27:18,736 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 19:27:18,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 19:27:18,844 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 421 statements into 1 equivalence classes. [2025-03-03 19:27:18,991 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 421 of 421 statements. [2025-03-03 19:27:18,991 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:27:18,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:27:18,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-03 19:27:19,012 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 19:27:19,054 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 9248 trivial. 0 not checked. [2025-03-03 19:27:19,055 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 19:27:19,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267951482] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 19:27:19,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 19:27:19,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-03 19:27:19,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130955425] [2025-03-03 19:27:19,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 19:27:19,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-03 19:27:19,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 19:27:19,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-03 19:27:19,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 19:27:19,079 INFO L87 Difference]: Start difference. First operand has 181 states, 109 states have (on average 1.4403669724770642) internal successors, (157), 110 states have internal predecessors, (157), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) 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, (69), 2 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 2 states have call successors, (69) [2025-03-03 19:27:19,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 19:27:19,133 INFO L93 Difference]: Finished difference Result 356 states and 654 transitions. [2025-03-03 19:27:19,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-03 19:27:19,135 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, (69), 2 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 2 states have call successors, (69) Word has length 421 [2025-03-03 19:27:19,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 19:27:19,143 INFO L225 Difference]: With dead ends: 356 [2025-03-03 19:27:19,143 INFO L226 Difference]: Without dead ends: 178 [2025-03-03 19:27:19,147 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 19:27:19,150 INFO L435 NwaCegarLoop]: 284 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 19:27:19,150 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 284 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 19:27:19,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2025-03-03 19:27:19,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2025-03-03 19:27:19,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 107 states have (on average 1.4018691588785046) internal successors, (150), 107 states have internal predecessors, (150), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2025-03-03 19:27:19,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 288 transitions. [2025-03-03 19:27:19,202 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 288 transitions. Word has length 421 [2025-03-03 19:27:19,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 19:27:19,202 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 288 transitions. [2025-03-03 19:27:19,203 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, (69), 2 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 2 states have call successors, (69) [2025-03-03 19:27:19,203 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 288 transitions. [2025-03-03 19:27:19,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2025-03-03 19:27:19,212 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 19:27:19,212 INFO L218 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 19:27:19,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-03 19:27:19,413 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 [2025-03-03 19:27:19,413 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 19:27:19,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 19:27:19,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1143485499, now seen corresponding path program 1 times [2025-03-03 19:27:19,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 19:27:19,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945279241] [2025-03-03 19:27:19,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:27:19,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 19:27:19,445 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 421 statements into 1 equivalence classes. [2025-03-03 19:27:19,520 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 421 of 421 statements. [2025-03-03 19:27:19,520 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:27:19,520 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:27:19,891 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2025-03-03 19:27:19,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 19:27:19,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945279241] [2025-03-03 19:27:19,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945279241] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 19:27:19,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 19:27:19,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 19:27:19,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872807859] [2025-03-03 19:27:19,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 19:27:19,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 19:27:19,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 19:27:19,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 19:27:19,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 19:27:19,898 INFO L87 Difference]: Start difference. First operand 178 states and 288 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, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2025-03-03 19:27:19,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 19:27:19,954 INFO L93 Difference]: Finished difference Result 353 states and 573 transitions. [2025-03-03 19:27:19,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 19:27:19,955 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, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 421 [2025-03-03 19:27:19,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 19:27:19,960 INFO L225 Difference]: With dead ends: 353 [2025-03-03 19:27:19,962 INFO L226 Difference]: Without dead ends: 178 [2025-03-03 19:27:19,963 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 19:27:19,964 INFO L435 NwaCegarLoop]: 282 mSDtfsCounter, 0 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 19:27:19,964 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 559 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 19:27:19,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2025-03-03 19:27:19,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2025-03-03 19:27:19,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 107 states have (on average 1.3925233644859814) internal successors, (149), 107 states have internal predecessors, (149), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2025-03-03 19:27:19,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 287 transitions. [2025-03-03 19:27:19,990 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 287 transitions. Word has length 421 [2025-03-03 19:27:19,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 19:27:19,993 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 287 transitions. [2025-03-03 19:27:19,994 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, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2025-03-03 19:27:19,994 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 287 transitions. [2025-03-03 19:27:19,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2025-03-03 19:27:19,997 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 19:27:19,998 INFO L218 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 19:27:19,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 19:27:19,998 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 19:27:19,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 19:27:20,000 INFO L85 PathProgramCache]: Analyzing trace with hash 299013628, now seen corresponding path program 1 times [2025-03-03 19:27:20,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 19:27:20,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955998828] [2025-03-03 19:27:20,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:27:20,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 19:27:20,029 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 421 statements into 1 equivalence classes. [2025-03-03 19:27:20,149 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 421 of 421 statements. [2025-03-03 19:27:20,153 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:27:20,153 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:27:20,852 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2025-03-03 19:27:20,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 19:27:20,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955998828] [2025-03-03 19:27:20,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955998828] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 19:27:20,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 19:27:20,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 19:27:20,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019530629] [2025-03-03 19:27:20,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 19:27:20,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 19:27:20,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 19:27:20,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 19:27:20,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 19:27:20,859 INFO L87 Difference]: Start difference. First operand 178 states and 287 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, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2025-03-03 19:27:21,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 19:27:21,165 INFO L93 Difference]: Finished difference Result 353 states and 571 transitions. [2025-03-03 19:27:21,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 19:27:21,166 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, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 421 [2025-03-03 19:27:21,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 19:27:21,168 INFO L225 Difference]: With dead ends: 353 [2025-03-03 19:27:21,168 INFO L226 Difference]: Without dead ends: 178 [2025-03-03 19:27:21,169 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 [2025-03-03 19:27:21,170 INFO L435 NwaCegarLoop]: 277 mSDtfsCounter, 157 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 19:27:21,170 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 413 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 19:27:21,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2025-03-03 19:27:21,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2025-03-03 19:27:21,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 107 states have (on average 1.3831775700934579) internal successors, (148), 107 states have internal predecessors, (148), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2025-03-03 19:27:21,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 286 transitions. [2025-03-03 19:27:21,194 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 286 transitions. Word has length 421 [2025-03-03 19:27:21,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 19:27:21,197 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 286 transitions. [2025-03-03 19:27:21,197 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, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2025-03-03 19:27:21,197 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 286 transitions. [2025-03-03 19:27:21,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2025-03-03 19:27:21,201 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 19:27:21,201 INFO L218 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 19:27:21,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-03 19:27:21,201 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 19:27:21,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 19:27:21,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1806565437, now seen corresponding path program 1 times [2025-03-03 19:27:21,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 19:27:21,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392790475] [2025-03-03 19:27:21,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:27:21,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 19:27:21,226 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 421 statements into 1 equivalence classes. [2025-03-03 19:27:21,315 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 421 of 421 statements. [2025-03-03 19:27:21,316 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:27:21,316 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:27:21,676 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2025-03-03 19:27:21,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 19:27:21,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392790475] [2025-03-03 19:27:21,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392790475] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 19:27:21,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 19:27:21,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 19:27:21,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553333981] [2025-03-03 19:27:21,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 19:27:21,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 19:27:21,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 19:27:21,678 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 19:27:21,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 19:27:21,679 INFO L87 Difference]: Start difference. First operand 178 states and 286 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2025-03-03 19:27:21,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 19:27:21,985 INFO L93 Difference]: Finished difference Result 725 states and 1159 transitions. [2025-03-03 19:27:21,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 19:27:21,986 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 421 [2025-03-03 19:27:21,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 19:27:21,990 INFO L225 Difference]: With dead ends: 725 [2025-03-03 19:27:21,990 INFO L226 Difference]: Without dead ends: 550 [2025-03-03 19:27:21,991 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-03 19:27:21,991 INFO L435 NwaCegarLoop]: 455 mSDtfsCounter, 591 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 1609 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 19:27:21,992 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 1609 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 19:27:21,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2025-03-03 19:27:22,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 287. [2025-03-03 19:27:22,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 185 states have (on average 1.4216216216216215) internal successors, (263), 186 states have internal predecessors, (263), 99 states have call successors, (99), 2 states have call predecessors, (99), 2 states have return successors, (99), 98 states have call predecessors, (99), 99 states have call successors, (99) [2025-03-03 19:27:22,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 461 transitions. [2025-03-03 19:27:22,050 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 461 transitions. Word has length 421 [2025-03-03 19:27:22,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 19:27:22,050 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 461 transitions. [2025-03-03 19:27:22,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2025-03-03 19:27:22,051 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 461 transitions. [2025-03-03 19:27:22,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2025-03-03 19:27:22,053 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 19:27:22,053 INFO L218 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 19:27:22,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-03 19:27:22,054 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 19:27:22,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 19:27:22,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1739558684, now seen corresponding path program 1 times [2025-03-03 19:27:22,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 19:27:22,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911669722] [2025-03-03 19:27:22,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:27:22,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 19:27:22,074 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 421 statements into 1 equivalence classes. [2025-03-03 19:27:22,141 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 421 of 421 statements. [2025-03-03 19:27:22,141 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:27:22,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:27:22,511 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2025-03-03 19:27:22,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 19:27:22,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911669722] [2025-03-03 19:27:22,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911669722] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 19:27:22,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 19:27:22,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 19:27:22,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681940004] [2025-03-03 19:27:22,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 19:27:22,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 19:27:22,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 19:27:22,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 19:27:22,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-03 19:27:22,513 INFO L87 Difference]: Start difference. First operand 287 states and 461 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2025-03-03 19:27:23,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 19:27:23,173 INFO L93 Difference]: Finished difference Result 853 states and 1373 transitions. [2025-03-03 19:27:23,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 19:27:23,173 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 421 [2025-03-03 19:27:23,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 19:27:23,178 INFO L225 Difference]: With dead ends: 853 [2025-03-03 19:27:23,178 INFO L226 Difference]: Without dead ends: 569 [2025-03-03 19:27:23,179 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-03 19:27:23,179 INFO L435 NwaCegarLoop]: 533 mSDtfsCounter, 301 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-03 19:27:23,180 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 657 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-03 19:27:23,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2025-03-03 19:27:23,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 335. [2025-03-03 19:27:23,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 233 states have (on average 1.4291845493562232) internal successors, (333), 234 states have internal predecessors, (333), 99 states have call successors, (99), 2 states have call predecessors, (99), 2 states have return successors, (99), 98 states have call predecessors, (99), 99 states have call successors, (99) [2025-03-03 19:27:23,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 531 transitions. [2025-03-03 19:27:23,245 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 531 transitions. Word has length 421 [2025-03-03 19:27:23,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 19:27:23,247 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 531 transitions. [2025-03-03 19:27:23,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2025-03-03 19:27:23,247 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 531 transitions. [2025-03-03 19:27:23,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2025-03-03 19:27:23,250 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 19:27:23,251 INFO L218 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 19:27:23,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-03 19:27:23,252 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 19:27:23,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 19:27:23,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1202098915, now seen corresponding path program 1 times [2025-03-03 19:27:23,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 19:27:23,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743302509] [2025-03-03 19:27:23,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:27:23,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 19:27:23,271 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 421 statements into 1 equivalence classes. [2025-03-03 19:27:23,292 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 421 of 421 statements. [2025-03-03 19:27:23,292 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:27:23,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat