./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-10.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_fillercode_fillercodestructure_filler-pe-cn_file-10.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 eed477ccc68b44369a2767c3ea5b70be7a75a8c2370f374d3c3760022cb8d072 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 11:47:55,339 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 11:47:55,392 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 11:47:55,397 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 11:47:55,398 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 11:47:55,419 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 11:47:55,419 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 11:47:55,419 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 11:47:55,420 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 11:47:55,420 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 11:47:55,420 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 11:47:55,420 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 11:47:55,420 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 11:47:55,420 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 11:47:55,421 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 11:47:55,421 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 11:47:55,421 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 11:47:55,421 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 11:47:55,421 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 11:47:55,421 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 11:47:55,421 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 11:47:55,421 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 11:47:55,422 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 11:47:55,422 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 11:47:55,422 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 11:47:55,422 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 11:47:55,422 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 11:47:55,422 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 11:47:55,422 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 11:47:55,422 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 11:47:55,422 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 11:47:55,422 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 11:47:55,423 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 11:47:55,423 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 11:47:55,423 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 11:47:55,423 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 11:47:55,423 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 11:47:55,423 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 11:47:55,423 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 11:47:55,423 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 11:47:55,423 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 11:47:55,423 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 11:47:55,424 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 11:47:55,424 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 -> eed477ccc68b44369a2767c3ea5b70be7a75a8c2370f374d3c3760022cb8d072 [2025-03-08 11:47:55,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 11:47:55,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 11:47:55,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 11:47:55,647 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 11:47:55,647 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 11:47:55,648 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-10.i [2025-03-08 11:47:56,905 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfe9e5369/43359714114c49cba0e10fbda430f703/FLAG888a4d5d4 [2025-03-08 11:47:57,175 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 11:47:57,177 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-10.i [2025-03-08 11:47:57,186 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfe9e5369/43359714114c49cba0e10fbda430f703/FLAG888a4d5d4 [2025-03-08 11:47:57,455 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfe9e5369/43359714114c49cba0e10fbda430f703 [2025-03-08 11:47:57,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 11:47:57,458 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 11:47:57,459 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 11:47:57,459 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 11:47:57,463 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 11:47:57,463 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 11:47:57" (1/1) ... [2025-03-08 11:47:57,464 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75a328d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:47:57, skipping insertion in model container [2025-03-08 11:47:57,464 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 11:47:57" (1/1) ... [2025-03-08 11:47:57,480 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 11:47:57,595 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_fillercodestructure_filler-pe-cn_file-10.i[919,932] [2025-03-08 11:47:57,681 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 11:47:57,698 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 11:47:57,710 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_fillercodestructure_filler-pe-cn_file-10.i[919,932] [2025-03-08 11:47:57,755 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 11:47:57,772 INFO L204 MainTranslator]: Completed translation [2025-03-08 11:47:57,773 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:47:57 WrapperNode [2025-03-08 11:47:57,773 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 11:47:57,775 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 11:47:57,775 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 11:47:57,775 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 11:47:57,780 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:47:57" (1/1) ... [2025-03-08 11:47:57,790 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:47:57" (1/1) ... [2025-03-08 11:47:57,825 INFO L138 Inliner]: procedures = 26, calls = 61, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 334 [2025-03-08 11:47:57,829 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 11:47:57,829 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 11:47:57,829 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 11:47:57,829 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 11:47:57,836 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:47:57" (1/1) ... [2025-03-08 11:47:57,836 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:47:57" (1/1) ... [2025-03-08 11:47:57,840 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:47:57" (1/1) ... [2025-03-08 11:47:57,863 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 11:47:57,863 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:47:57" (1/1) ... [2025-03-08 11:47:57,864 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:47:57" (1/1) ... [2025-03-08 11:47:57,878 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:47:57" (1/1) ... [2025-03-08 11:47:57,883 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:47:57" (1/1) ... [2025-03-08 11:47:57,888 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:47:57" (1/1) ... [2025-03-08 11:47:57,891 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:47:57" (1/1) ... [2025-03-08 11:47:57,895 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 11:47:57,897 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 11:47:57,898 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 11:47:57,898 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 11:47:57,899 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:47:57" (1/1) ... [2025-03-08 11:47:57,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 11:47:57,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 11:47:57,941 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 11:47:57,954 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 11:47:57,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 11:47:57,979 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 11:47:57,979 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 11:47:57,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 11:47:57,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 11:47:57,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 11:47:58,066 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 11:47:58,067 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 11:47:58,468 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L223: havoc property_#t~bitwise38#1;havoc property_#t~ite40#1;havoc property_#t~bitwise39#1;havoc property_#t~short41#1; [2025-03-08 11:47:58,511 INFO L? ?]: Removed 34 outVars from TransFormulas that were not future-live. [2025-03-08 11:47:58,511 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 11:47:58,535 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 11:47:58,536 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 11:47:58,536 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 11:47:58 BoogieIcfgContainer [2025-03-08 11:47:58,536 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 11:47:58,539 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 11:47:58,539 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 11:47:58,542 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 11:47:58,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 11:47:57" (1/3) ... [2025-03-08 11:47:58,543 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a35c655 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 11:47:58, skipping insertion in model container [2025-03-08 11:47:58,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:47:57" (2/3) ... [2025-03-08 11:47:58,543 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a35c655 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 11:47:58, skipping insertion in model container [2025-03-08 11:47:58,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 11:47:58" (3/3) ... [2025-03-08 11:47:58,544 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-cn_file-10.i [2025-03-08 11:47:58,556 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 11:47:58,558 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pe-cn_file-10.i that has 2 procedures, 146 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 11:47:58,611 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 11:47:58,621 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;@510f8bf5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 11:47:58,621 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 11:47:58,624 INFO L276 IsEmpty]: Start isEmpty. Operand has 146 states, 95 states have (on average 1.4105263157894736) internal successors, (134), 96 states have internal predecessors, (134), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2025-03-08 11:47:58,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2025-03-08 11:47:58,636 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 11:47:58,637 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:47:58,637 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 11:47:58,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 11:47:58,642 INFO L85 PathProgramCache]: Analyzing trace with hash 476958310, now seen corresponding path program 1 times [2025-03-08 11:47:58,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 11:47:58,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814967973] [2025-03-08 11:47:58,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:47:58,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 11:47:58,758 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 295 statements into 1 equivalence classes. [2025-03-08 11:47:58,818 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 295 of 295 statements. [2025-03-08 11:47:58,819 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:47:58,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:47:59,062 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2025-03-08 11:47:59,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 11:47:59,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814967973] [2025-03-08 11:47:59,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814967973] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 11:47:59,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243654805] [2025-03-08 11:47:59,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:47:59,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 11:47:59,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 11:47:59,070 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 11:47:59,073 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 11:47:59,154 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 295 statements into 1 equivalence classes. [2025-03-08 11:47:59,241 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 295 of 295 statements. [2025-03-08 11:47:59,241 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:47:59,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:47:59,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 11:47:59,260 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 11:47:59,286 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2025-03-08 11:47:59,286 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 11:47:59,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243654805] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 11:47:59,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 11:47:59,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 11:47:59,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98426221] [2025-03-08 11:47:59,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 11:47:59,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 11:47:59,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 11:47:59,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 11:47:59,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 11:47:59,312 INFO L87 Difference]: Start difference. First operand has 146 states, 95 states have (on average 1.4105263157894736) internal successors, (134), 96 states have internal predecessors, (134), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2025-03-08 11:47:59,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 11:47:59,354 INFO L93 Difference]: Finished difference Result 286 states and 503 transitions. [2025-03-08 11:47:59,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 11:47:59,356 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) Word has length 295 [2025-03-08 11:47:59,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 11:47:59,363 INFO L225 Difference]: With dead ends: 286 [2025-03-08 11:47:59,363 INFO L226 Difference]: Without dead ends: 143 [2025-03-08 11:47:59,366 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 296 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 11:47:59,370 INFO L435 NwaCegarLoop]: 217 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 11:47:59,371 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 217 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 11:47:59,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2025-03-08 11:47:59,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2025-03-08 11:47:59,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 93 states have (on average 1.3870967741935485) internal successors, (129), 93 states have internal predecessors, (129), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2025-03-08 11:47:59,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 225 transitions. [2025-03-08 11:47:59,417 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 225 transitions. Word has length 295 [2025-03-08 11:47:59,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 11:47:59,418 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 225 transitions. [2025-03-08 11:47:59,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2025-03-08 11:47:59,418 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 225 transitions. [2025-03-08 11:47:59,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2025-03-08 11:47:59,422 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 11:47:59,423 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:47:59,432 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 11:47:59,627 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 11:47:59,627 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 11:47:59,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 11:47:59,628 INFO L85 PathProgramCache]: Analyzing trace with hash -960098454, now seen corresponding path program 1 times [2025-03-08 11:47:59,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 11:47:59,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449467131] [2025-03-08 11:47:59,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:47:59,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 11:47:59,648 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 295 statements into 1 equivalence classes. [2025-03-08 11:47:59,724 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 295 of 295 statements. [2025-03-08 11:47:59,724 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:47:59,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:48:00,246 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2025-03-08 11:48:00,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 11:48:00,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449467131] [2025-03-08 11:48:00,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449467131] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 11:48:00,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 11:48:00,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 11:48:00,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898856500] [2025-03-08 11:48:00,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 11:48:00,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 11:48:00,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 11:48:00,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 11:48:00,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 11:48:00,252 INFO L87 Difference]: Start difference. First operand 143 states and 225 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2025-03-08 11:48:00,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 11:48:00,511 INFO L93 Difference]: Finished difference Result 424 states and 670 transitions. [2025-03-08 11:48:00,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 11:48:00,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 295 [2025-03-08 11:48:00,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 11:48:00,516 INFO L225 Difference]: With dead ends: 424 [2025-03-08 11:48:00,517 INFO L226 Difference]: Without dead ends: 284 [2025-03-08 11:48:00,519 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 11:48:00,519 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 133 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 11:48:00,520 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 628 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 11:48:00,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2025-03-08 11:48:00,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 224. [2025-03-08 11:48:00,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 125 states have (on average 1.288) internal successors, (161), 125 states have internal predecessors, (161), 96 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2025-03-08 11:48:00,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 353 transitions. [2025-03-08 11:48:00,557 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 353 transitions. Word has length 295 [2025-03-08 11:48:00,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 11:48:00,558 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 353 transitions. [2025-03-08 11:48:00,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2025-03-08 11:48:00,558 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 353 transitions. [2025-03-08 11:48:00,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2025-03-08 11:48:00,561 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 11:48:00,561 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:48:00,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 11:48:00,561 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 11:48:00,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 11:48:00,562 INFO L85 PathProgramCache]: Analyzing trace with hash 625114918, now seen corresponding path program 1 times [2025-03-08 11:48:00,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 11:48:00,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771619876] [2025-03-08 11:48:00,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:48:00,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 11:48:00,582 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 296 statements into 1 equivalence classes. [2025-03-08 11:48:00,802 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 296 of 296 statements. [2025-03-08 11:48:00,803 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:48:00,803 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:48:47,510 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2025-03-08 11:48:47,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 11:48:47,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771619876] [2025-03-08 11:48:47,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771619876] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 11:48:47,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 11:48:47,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2025-03-08 11:48:47,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525188133] [2025-03-08 11:48:47,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 11:48:47,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-08 11:48:47,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 11:48:47,514 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-08 11:48:47,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2025-03-08 11:48:47,515 INFO L87 Difference]: Start difference. First operand 224 states and 353 transitions. Second operand has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 states have internal predecessors, (59), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2025-03-08 11:48:52,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 11:48:52,015 INFO L93 Difference]: Finished difference Result 793 states and 1249 transitions. [2025-03-08 11:48:52,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-08 11:48:52,016 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 states have internal predecessors, (59), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 296 [2025-03-08 11:48:52,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 11:48:52,020 INFO L225 Difference]: With dead ends: 793 [2025-03-08 11:48:52,020 INFO L226 Difference]: Without dead ends: 653 [2025-03-08 11:48:52,021 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=243, Invalid=749, Unknown=0, NotChecked=0, Total=992 [2025-03-08 11:48:52,022 INFO L435 NwaCegarLoop]: 251 mSDtfsCounter, 1987 mSDsluCounter, 1955 mSDsCounter, 0 mSdLazyCounter, 1928 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1987 SdHoareTripleChecker+Valid, 2206 SdHoareTripleChecker+Invalid, 2102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-08 11:48:52,023 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1987 Valid, 2206 Invalid, 2102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1928 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-08 11:48:52,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2025-03-08 11:48:52,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 411. [2025-03-08 11:48:52,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 262 states have (on average 1.3702290076335877) internal successors, (359), 263 states have internal predecessors, (359), 144 states have call successors, (144), 4 states have call predecessors, (144), 4 states have return successors, (144), 143 states have call predecessors, (144), 144 states have call successors, (144) [2025-03-08 11:48:52,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 647 transitions. [2025-03-08 11:48:52,065 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 647 transitions. Word has length 296 [2025-03-08 11:48:52,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 11:48:52,066 INFO L471 AbstractCegarLoop]: Abstraction has 411 states and 647 transitions. [2025-03-08 11:48:52,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 states have internal predecessors, (59), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2025-03-08 11:48:52,067 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 647 transitions. [2025-03-08 11:48:52,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2025-03-08 11:48:52,070 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 11:48:52,070 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:48:52,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 11:48:52,070 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 11:48:52,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 11:48:52,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1165282937, now seen corresponding path program 1 times [2025-03-08 11:48:52,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 11:48:52,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735372870] [2025-03-08 11:48:52,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:48:52,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 11:48:52,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 296 statements into 1 equivalence classes. [2025-03-08 11:48:52,187 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 296 of 296 statements. [2025-03-08 11:48:52,188 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:48:52,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat